301. A student says, “The adrenal medulla forms the outer covering of the gland, while the cortex lies inside it.” Which correction is most accurate?
ⓐ. The statement is correct because medulla always means outer region in endocrine glands.
ⓑ. The statement is incorrect because the cortex is outer and the medulla is inner.
ⓒ. The statement is correct because cortical zones are found inside the medulla.
ⓓ. The statement is incorrect because the adrenal gland has no true internal divisions.
Correct Answer: The statement is incorrect because the cortex is outer and the medulla is inner.
Explanation: The adrenal gland has a clear and basic structural plan. Its cortex forms the outer region, while the medulla lies inside as the central part. Students sometimes reverse the two names, but the correct arrangement must be remembered from outside to inside as cortex then medulla. The cortex is not just a thin covering but one of the two major parts of the gland. The medulla is therefore not the outer layer. This question corrects a common structural misunderstanding about adrenal anatomy.
302. Assertion (A): Cortical zones are part of the adrenal cortex rather than part of the adrenal medulla. Reason (R): The adrenal cortex is further subdivided internally, whereas the medulla is the central inner division of the gland.
ⓐ. Both A and R are true, and R is the correct explanation of A.
ⓑ. Both A and R are true, but R is not the correct explanation of A.
ⓒ. A is true, but R is false.
ⓓ. A is false, but R is true.
Correct Answer: Both A and R are true, and R is the correct explanation of A.
Explanation: The assertion is true because cortical zones belong to the cortex, not to the medulla. The reason is also true, since the adrenal cortex is the part that is further divided into internal zones, while the medulla is the central inner division of the gland. This means the organization of the cortex is more layered within itself. The reason directly explains why cortical zones cannot be assigned to the medulla. The question tests structural hierarchy rather than simple vocabulary recall. It helps place zones at the correct level within the gland.
303. Which of the following is the best non-example of a main structural component of the adrenal gland?
ⓐ. Cortex
ⓑ. Medulla
ⓒ. Follicle
ⓓ. Cortical zone
Correct Answer: Follicle
Explanation: The adrenal gland is organized mainly into cortex and medulla, and the cortex itself contains cortical zones. A follicle, however, is not a structural component of the adrenal gland. Follicles are characteristic structural units of the thyroid gland, not the adrenal gland. This makes follicle the clearest non-example in the set. The question helps the student separate named structures from different endocrine organs. Recognizing such non-examples is important because many endocrine terms can sound familiar but belong to entirely different glands.
304. Which comparison best distinguishes the adrenal gland from the thyroid gland at the structural level?
ⓐ. The adrenal gland is organized into cortex and medulla, whereas the thyroid gland is organized into follicles.
ⓑ. The adrenal gland is organized into follicles, whereas the thyroid gland is organized into cortex and medulla.
ⓒ. Both glands have the same internal plan, but only their hormones are different.
ⓓ. Both glands are made mainly of islets and surrounding exocrine tissue.
Correct Answer: The adrenal gland is organized into cortex and medulla, whereas the thyroid gland is organized into follicles.
Explanation: The adrenal gland and thyroid gland are both endocrine organs, but their structural plans are very different. The adrenal gland is divided into two major regions called cortex and medulla, while the thyroid gland is built around follicles. This distinction is important because students may mix gland names and structures across the chapter. The question is comparison-based and helps keep endocrine anatomy organized clearly. Structural identity is often the easiest way to separate glands before moving to hormonal details. Cortex-medulla therefore belongs to adrenal anatomy, while follicles belong to thyroid anatomy.
305. In a labelled diagram of the adrenal gland, which sequence from whole structure to smaller internal subdivision is correct?
ⓐ. Adrenal gland $\rightarrow$ medulla $\rightarrow$ cortical zones
ⓑ. Adrenal gland $\rightarrow$ cortex $\rightarrow$ cortical zones
ⓒ. Cortical zones $\rightarrow$ adrenal gland $\rightarrow$ medulla
ⓓ. Cortex $\rightarrow$ adrenal gland $\rightarrow$ cortical zones
Correct Answer: Adrenal gland $\rightarrow$ cortex $\rightarrow$ cortical zones
Explanation: The adrenal gland is the whole organ. Within it, the cortex is one major structural division, and within the cortex there are further subdivisions called cortical zones. This creates a clear structural hierarchy from whole gland to major part to internal subdivision. The medulla is also a major part of the gland, but cortical zones do not lie inside the medulla. The question checks whether the student can arrange the terms in the correct anatomical order. Understanding this nesting of structures is essential for later study of adrenal function.
306. A radiology student describes an endocrine gland as a paired organ above the kidneys, each with a central core surrounded by a broader outer region. Which interpretation best fits this observation?
ⓐ. The central core is the cortex and the outer region is the medulla.
ⓑ. The central core is the medulla and the outer region is the cortex.
ⓒ. The central core is the follicle and the outer region is the capsule.
ⓓ. The central core is the islet and the outer region is the acinar tissue.
Correct Answer: The central core is the medulla and the outer region is the cortex.
Explanation: The adrenal gland lies above each kidney and is structurally divided into an outer cortex and an inner medulla. Therefore, if a gland is described as having a central core and an outer surrounding region, the central part corresponds to the medulla and the outer part corresponds to the cortex. This question applies structural knowledge to an imaging-style description rather than to a textbook diagram. The other options belong to other organs or reverse the correct arrangement. The proper interpretation of the adrenal pattern is therefore outer cortex and inner medulla.
307. Which statement most accurately summarizes the structural organization of the adrenal gland?
ⓐ. A gland above each kidney contains follicles and colloid for thyroid hormone storage.
ⓑ. A paired endocrine gland above the kidneys is divided into outer cortex and inner medulla, and the cortex is further organized into zones.
ⓒ. A mixed gland near the duodenum contains islets and acini for dual endocrine and exocrine function.
ⓓ. A neck gland behind the thyroid secretes a hormone for calcium and phosphate balance.
Correct Answer: A paired endocrine gland above the kidneys is divided into outer cortex and inner medulla, and the cortex is further organized into zones.
Explanation: these concepts are built around the basic structure of the adrenal glands. The essential points are that the glands are paired, they lie above the kidneys, each gland has an outer cortex and an inner medulla, and the cortex itself is divided into zones. This gives the student a complete structural map before later study discuss adrenal hormones. These ideas is therefore anatomical in focus rather than metabolic, pancreatic, or parathyroid in theme. A correct summary must combine location, major divisions, and cortical subdivision in one statement. That is why this option best captures these ideas.
308. Which pair represents the two major categories of hormones secreted by the adrenal cortex?
ⓐ. Mineralocorticoids and glucocorticoids
ⓑ. Adrenaline and noradrenaline
ⓒ. Insulin and glucagon
ⓓ. Thyroxine and calcitonin
Correct Answer: Mineralocorticoids and glucocorticoids
Explanation: The adrenal cortex mainly secretes two important groups of steroid hormones: mineralocorticoids and glucocorticoids. These categories are central to understanding adrenal cortex function. Mineralocorticoids are mainly associated with regulation of mineral and water balance, while glucocorticoids are mainly associated with metabolic regulation and stress-related effects. The other options belong to different endocrine glands or to the adrenal medulla rather than the cortex. This question establishes the basic hormone classification of the adrenal cortex, which is the starting point for the rest of these ideas. Once these two categories are clear, the role of cortisol and Addison’s disease becomes easier to understand.
309. Mineralocorticoids are most directly associated with regulation of:
ⓐ. sleep-wake rhythm and body temperature pattern
ⓑ. mineral and water balance in the body
ⓒ. growth of bones and soft tissues
ⓓ. maturation of lymphocytes in early life
Correct Answer: mineral and water balance in the body
Explanation: Mineralocorticoids are adrenal cortex hormones mainly concerned with maintaining mineral balance, especially the handling of ions such as $Na^+$ and $K^+$, along with related water balance in the body. Because water movement is closely connected with mineral distribution, these hormones are important for internal stability. They are not primarily involved in body growth, daily biological rhythm, or immune development. The name itself provides a useful clue, since “mineralo-” points toward mineral regulation. At a basic level, the most important idea is that mineralocorticoids help maintain internal ionic and fluid balance. That functional theme clearly defines this hormone group.
310. Glucocorticoids are best known for their major role in:
ⓐ. calcium and phosphate balance
ⓑ. ovulation and spermatogenesis
ⓒ. regulation of metabolism and stress-related body responses
ⓓ. milk ejection and uterine contraction
Correct Answer: regulation of metabolism and stress-related body responses
Explanation: Glucocorticoids are adrenal cortex hormones mainly associated with metabolic regulation and the body’s response to stress. They influence how nutrients are used and help the body adapt physiologically when demands increase. This makes them different from mineralocorticoids, which are more strongly related to ion and water balance. They are also different from reproductive hormones or pituitary hormones linked with lactation and uterine activity. At the chapter level, glucocorticoids should be remembered as hormones that affect metabolism and support adjustment to stressful conditions. That broad functional identity is the key foundational concept here.
311. Cortisol is best classified as a:
ⓐ. thyroid hormone
ⓑ. mineralocorticoid
ⓒ. pituitary hormone
ⓓ. glucocorticoid
Correct Answer: glucocorticoid
Explanation: Cortisol is one of the most important glucocorticoids secreted by the adrenal cortex. It belongs to the glucocorticoid group because its major functional association is with metabolism and stress-related physiological regulation. This makes it different from mineralocorticoids, which are more closely linked with electrolyte and water balance. It is also not a thyroid or pituitary hormone. In these concepts, cortisol serves as the key named example of the glucocorticoid category. Knowing that cortisol is a glucocorticoid helps connect the specific hormone name with the broader adrenal cortex hormone classification introduced in the chapter.
312. Which statement correctly compares mineralocorticoids and glucocorticoids?
ⓐ. Mineralocorticoids mainly regulate metabolism, whereas glucocorticoids mainly regulate calcium balance.
ⓑ. Mineralocorticoids mainly regulate mineral balance, whereas glucocorticoids mainly regulate metabolism.
ⓒ. Mineralocorticoids mainly regulate growth, whereas glucocorticoids mainly regulate reproduction.
ⓓ. Mineralocorticoids mainly regulate immune cell maturation, whereas glucocorticoids mainly regulate diurnal rhythm.
Correct Answer: Mineralocorticoids mainly regulate mineral balance, whereas glucocorticoids mainly regulate metabolism.
Explanation: Mineralocorticoids and glucocorticoids are both produced by the adrenal cortex, but they differ clearly in their main functional themes. Mineralocorticoids are chiefly associated with maintaining mineral and water balance, especially through regulation of ions such as $Na^+$ and $K^+$. Glucocorticoids, on the other hand, are more closely associated with metabolism and the body’s adjustment to stress. This comparison is one of the most important distinctions in adrenal cortex physiology. The question helps students organize the two hormone groups by function instead of only memorizing their names. That functional contrast is essential for understanding these ideas properly.
313. Addison’s disease is most directly associated with:
ⓐ. hypersecretion of adrenal medulla hormones
ⓑ. excess secretion of thyroid hormones
ⓒ. hyposecretion of adrenal cortex hormones
ⓓ. deficiency of vasopressin from the posterior pituitary
Correct Answer: hyposecretion of adrenal cortex hormones
Explanation: Addison’s disease is classically associated with insufficient secretion of hormones from the adrenal cortex. Because the cortex produces both mineralocorticoids and glucocorticoids, reduced activity of this region can produce a serious endocrine disorder. The condition is therefore linked with cortical hypofunction rather than with adrenal medullary overactivity, thyroid excess, or vasopressin deficiency. At a basic level, the most important fact is to connect Addison’s disease with underactivity of the adrenal cortex. This gives the student a clear disease-gland relationship before moving to more detailed features in later study. That core link defines the disorder here.
314. A patient is described as having a disorder caused by failure of the outer part of the adrenal gland rather than its inner part. Which condition best matches this description?
ⓐ. Exophthalmic goitre
ⓑ. Diabetes insipidus
ⓒ. Acromegaly
ⓓ. Addison’s disease
Correct Answer: Addison’s disease
Explanation: The outer part of the adrenal gland is the cortex, while the inner part is the medulla. Addison’s disease is associated with hyposecretion of adrenal cortex hormones, so it fits the description of failure of the outer adrenal region. This question uses structure and function together, requiring the student to connect adrenal anatomy with endocrine disorder. The other options are unrelated to adrenal cortical failure and belong to thyroid, pituitary, or vasopressin-related disorders. A correct answer must therefore identify a disease tied specifically to the adrenal cortex. That disease is Addison’s disease.
315. Which statement best summarizes the major roles of adrenal cortex hormones and Addison’s disease?
ⓐ. The adrenal cortex secretes mineralocorticoids and glucocorticoids, cortisol is a glucocorticoid, and hyposecretion of cortical hormones is linked with Addison’s disease.
ⓑ. The adrenal cortex secretes adrenaline and noradrenaline, cortisol is a mineralocorticoid, and excess secretion causes diabetes insipidus.
ⓒ. The adrenal cortex secretes insulin and glucagon, cortisol is a pituitary hormone, and deficiency causes acromegaly.
ⓓ. The adrenal cortex secretes thyroxine and calcitonin, cortisol is a thyroid hormone, and deficiency causes cretinism.
Correct Answer: The adrenal cortex secretes mineralocorticoids and glucocorticoids, cortisol is a glucocorticoid, and hyposecretion of cortical hormones is linked with Addison’s disease.
Explanation: The focus here is on the hormones of the adrenal cortex and the major disorder associated with their deficiency. The two hormone groups are mineralocorticoids and glucocorticoids, and cortisol is a key named example of the glucocorticoid group. These ideas also introduces Addison’s disease as a disorder caused by hyposecretion of adrenal cortex hormones. These ideas together provide a clear basic framework for the topic. A good summary must therefore connect hormone classification, cortisol identity, and cortical hypofunction in one statement. That combination best captures the core logic here.
316. A patient has a disorder mainly affecting regulation of body salts and associated water balance, while the question does not point first to glucose control, lactation, or thyroid activity. Which adrenal cortex hormone group is most directly involved?
ⓐ. Glucocorticoids
ⓑ. Mineralocorticoids
ⓒ. Catecholamines
ⓓ. Pituitary tropic hormones
Correct Answer: Mineralocorticoids
Explanation: Mineralocorticoids are the adrenal cortex hormones most directly associated with regulation of mineral ions and related water balance in the body. Their function is especially important for maintaining internal stability involving substances such as $Na^+$ and $K^+$. Because water movement is closely linked with electrolyte balance, problems in this hormone group can disturb both salt and fluid regulation. The question is designed to distinguish this group from glucocorticoids, which are more strongly associated with metabolism and stress. When the main clue is mineral and water balance, mineralocorticoids are the most appropriate answer.
317. A student is asked to identify the adrenal cortex hormone that is best known as a named example of the group involved in metabolism and stress-related adjustment. Which hormone should be selected?
ⓐ. Thyroxine
ⓑ. Adrenaline
ⓒ. Calcitonin
ⓓ. Cortisol
Correct Answer: Cortisol
Explanation: Cortisol is the best-known named example of a glucocorticoid produced by the adrenal cortex. Glucocorticoids are mainly associated with metabolic regulation and with helping the body respond to stressful conditions. This makes cortisol an important hormone in understanding adrenal cortex physiology. The other listed hormones belong to different endocrine glands or to the adrenal medulla rather than the cortex. The question is classification-based, asking for a named hormone that represents the glucocorticoid category. Cortisol fits that role most directly.
318. Assertion (A): Addison’s disease is mainly a disorder of adrenal cortex underactivity. Reason (R): The adrenal cortex produces mineralocorticoids and glucocorticoids, so reduced secretion from this region causes the disorder.
ⓐ. Both A and R are true, and R is the correct explanation of A.
ⓑ. Both A and R are true, but R is not the correct explanation of A.
ⓒ. A is true, but R is false.
ⓓ. A is false, but R is true.
Correct Answer: Both A and R are true, and R is the correct explanation of A.
Explanation: The assertion is true because Addison’s disease is classically linked with hyposecretion of adrenal cortex hormones. The reason is also true, since the cortex is the part of the adrenal gland that secretes mineralocorticoids and glucocorticoids. When this outer region becomes underactive, the body lacks important cortical hormones, leading to the disease pattern associated with Addison’s disease. The reason directly explains why the disorder is specifically cortical rather than medullary. This question helps connect gland structure with disease causation in a logical way.
319. Which of the following is the best non-example of a hormone category secreted by the adrenal cortex?
ⓐ. Mineralocorticoids
ⓑ. Glucocorticoids
ⓒ. Catecholamines
ⓓ. Cortical steroids
Correct Answer: Catecholamines
Explanation: The adrenal cortex mainly secretes steroid hormone groups such as mineralocorticoids and glucocorticoids. Catecholamines, however, are not products of the adrenal cortex. They are associated with the adrenal medulla, which is the inner part of the adrenal gland. This makes catecholamines the clearest non-example when the question asks specifically about adrenal cortex hormone categories. The question is useful because it prevents confusion between the two major parts of the adrenal gland. Knowing whether a hormone comes from cortex or medulla is essential in adrenal endocrinology.
320. A student says, “Since cortisol comes from the adrenal cortex, it must be a mineralocorticoid.” Which correction is most accurate?
ⓐ. The statement is correct because every adrenal cortex hormone belongs to the mineralocorticoid group.
ⓑ. The statement is incorrect because cortisol is a glucocorticoid, not a mineralocorticoid.
ⓒ. The statement is correct because cortisol mainly controls $Na^+$ and $K^+$ balance.
ⓓ. The statement is incorrect because cortisol is actually produced by the adrenal medulla.
Correct Answer: The statement is incorrect because cortisol is a glucocorticoid, not a mineralocorticoid.
Explanation: The statement is incorrect because the adrenal cortex produces more than one hormone category. Cortisol belongs to the glucocorticoid group, which is mainly associated with metabolism and stress-related responses. Mineralocorticoids form a different group and are more directly related to electrolyte and water balance. The question targets a common misconception that origin from the same gland means all hormones belong to one functional class. A proper understanding of the adrenal cortex requires separating its hormone categories clearly. Cortisol is therefore classified under glucocorticoids.
