Question 1

T₃ and T₄

Accepted Answer

A) stimulate the adenohypophysis to secrete TSH. 
B) regulate the basal metabolic rate (BMR). 
C) stimulate osteoclastic activity,thereby elevating plasma calcium levels. 
D) All of the above are true. 
A) stimulate the adenohypophysis to secrete TSH. 
B) regulate the basal metabolic rate (BMR). 
C) stimulate osteoclastic activity,thereby elevating plasma calcium levels. 
D) All of the above are true.

Question 2

A deficiency of dietary iodine

Accepted Answer

A) lowers plasma calcium levels. 
B) causes low blood volume and shock. 
C) decreases the synthesis of calcitonin. 
D) causes a goiter. 
A) lowers plasma calcium levels. 
B) causes low blood volume and shock. 
C) decreases the synthesis of calcitonin. 
D) causes a goiter.

Question 3

As plasma levels of calcium decrease

Accepted Answer

A) insulin is secreted. 
B) the parathyroid glands secrete an osteoclastic hormone. 
C) the kidneys excrete calcium and phosphorus. 
D) calcitonin is secreted. 
A) insulin is secreted. 
B) the parathyroid glands secrete an osteoclastic hormone. 
C) the kidneys excrete calcium and phosphorus. 
D) calcitonin is secreted.

Question 4

Obesity

Accepted Answer

A) antagonizes insulin. 
B) elevates blood glucose levels. 
C) increases blood pressure. 
D) All of the above are true. 
A) antagonizes insulin. 
B) elevates blood glucose levels. 
C) increases blood pressure. 
D) All of the above are true.

Question 5

A deficiency of insulin causes

Accepted Answer

A) hypocalcemia. 
B) hyperglycemia. 
C) Cushing's syndrome. 
D) adrenal shock. 
A) hypocalcemia. 
B) hyperglycemia. 
C) Cushing's syndrome. 
D) adrenal shock.

Question 6

This hormone stimulates osteoclastic activity,causing bone resorption.

Accepted Answer

A) Calcitonin 
B) Androgen 
C) PTH 
D) Thyroxine 
A) Calcitonin 
B) Androgen 
C) PTH 
D) Thyroxine

Question 7

Insulin

Accepted Answer

A) is secreted by the beta cells of the islets of Langerhans. 
B) is secreted by the liver. 
C) raises blood glucose levels. 
D) is released by the pancreas in response to low blood glucose levels. 
A) is secreted by the beta cells of the islets of Langerhans. 
B) is secreted by the liver. 
C) raises blood glucose levels. 
D) is released by the pancreas in response to low blood glucose levels.

Question 8

Oxytocin

Accepted Answer

A) is a neurohypophyseal hormone that stimulates the uterine muscle to contract,thereby assisting in labor. 
B) is a gonadotropin. 
C) stimulates the kidney to reabsorb Na+ and water,thereby expanding blood volume. 
D) is a mineralocorticoid. 
A) is a neurohypophyseal hormone that stimulates the uterine muscle to contract,thereby assisting in labor. 
B) is a gonadotropin. 
C) stimulates the kidney to reabsorb Na+ and water,thereby expanding blood volume. 
D) is a mineralocorticoid.

Question 9

Epinephrine (adrenaline) increases blood glucose by

Accepted Answer

A) increasing transport of glucose into the cell. 
B) stimulating gluconeogenesis. 
C) stimulating the hepatic conversion of glycogen into glucose. 
D) converting fatty acids into glucose. 
A) increasing transport of glucose into the cell. 
B) stimulating gluconeogenesis. 
C) stimulating the hepatic conversion of glycogen into glucose. 
D) converting fatty acids into glucose.

Question 10

Which of the following hormones exerts negative feedback control on the secretion of ACTH?

Accepted Answer

A) PTH 
B) Glucagon 
C) Cortisol 
D) Corticotrophin-releasing hormone 
A) PTH 
B) Glucagon 
C) Cortisol 
D) Corticotrophin-releasing hormone

Question 11

Calcitonin and parathyroid hormone

Accepted Answer

A) are both secreted by the parathyroid glands. 
B) increase plasma levels of calcium. 
C) decrease plasma levels of calcium. 
D) control plasma levels of calcium. 
A) are both secreted by the parathyroid glands. 
B) increase plasma levels of calcium. 
C) decrease plasma levels of calcium. 
D) control plasma levels of calcium.

Question 12

Excess secretion of epinephrine

Accepted Answer

A) relieves anxiety. 
B) stimulates the synthesis of glycogen. 
C) elevates blood glucose levels. 
D) slows heart rate and lowers blood pressure. 
A) relieves anxiety. 
B) stimulates the synthesis of glycogen. 
C) elevates blood glucose levels. 
D) slows heart rate and lowers blood pressure.

Question 13

Testosterone is best described as

Accepted Answer

A) virilizing. 
B) lactogenic. 
C) adenohypophyseal. 
D) pancreatic. 
A) virilizing. 
B) lactogenic. 
C) adenohypophyseal. 
D) pancreatic.

Question 14

Identify the glands associated with these hormones: gonadotropins,aldosterone,and epinephrine.

Accepted Answer

A) Adenohypophysis,neurohypophysis,pancreas 
B) Adenohypophysis,anterior pituitary,adrenal cortex 
C) Adenohypophysis,posterior pituitary,adrenal medulla 
D) Anterior pituitary,adrenal cortex,adrenal medulla 
A) Adenohypophysis,neurohypophysis,pancreas 
B) Adenohypophysis,anterior pituitary,adrenal cortex 
C) Adenohypophysis,posterior pituitary,adrenal medulla 
D) Anterior pituitary,adrenal cortex,adrenal medulla

Question 15

Which group is incorrect?

Accepted Answer

A) Hormones of the anterior pituitary gland: ACTH,prolactin,TSH,oxytocin 
B) Steroids: cortisol,aldosterone,testosterone 
C) Secretions of the gonads: estrogen,progesterone,testosterone 
D) Hormones secreted by the thyroid gland: T₃,T₄,calcitonin 
A) Hormones of the anterior pituitary gland: ACTH,prolactin,TSH,oxytocin 
B) Steroids: cortisol,aldosterone,testosterone 
C) Secretions of the gonads: estrogen,progesterone,testosterone 
D) Hormones secreted by the thyroid gland: T₃,T₄,calcitonin

Question 16

Identify the glands that secrete these hormones: glucagon,PTH,and TSH.

Accepted Answer

A) Neurohypophysis,pancreas,ovary 
B) Adrenal cortex,pancreas,neurohypophysis 
C) Pancreas,parathyroid,anterior pituitary 
D) Testes,thymus,adenohypophysis 
A) Neurohypophysis,pancreas,ovary 
B) Adrenal cortex,pancreas,neurohypophysis 
C) Pancreas,parathyroid,anterior pituitary 
D) Testes,thymus,adenohypophysis

Question 17

Cretinism,myxedema,and Graves' disease are all

Accepted Answer

A) thyroid hormone deficiency diseases. 
B) thyroid hormone disorders caused by oversecretion of thyroxine. 
C) calcium imbalances due primarily to the lack of calcitonin. 
D) disorders of thyroid gland function. 
A) thyroid hormone deficiency diseases. 
B) thyroid hormone disorders caused by oversecretion of thyroxine. 
C) calcium imbalances due primarily to the lack of calcitonin. 
D) disorders of thyroid gland function.

Question 18

Thyroxine

Accepted Answer

A) is TSH. 
B) is T₄. 
C) exerts negative feedback control on the secretion of T₃. 
D) lowers basal metabolic rate. 
A) is TSH. 
B) is T₄. 
C) exerts negative feedback control on the secretion of T₃. 
D) lowers basal metabolic rate.

Question 19

The beta cells of the islets of Langerhans

Accepted Answer

A) are the hormone-secreting cells of the adrenal cortex. 
B) are insulin-secreting pancreatic cells. 
C) secrete releasing hormones. 
D) secrete steroids. 
A) are the hormone-secreting cells of the adrenal cortex. 
B) are insulin-secreting pancreatic cells. 
C) secrete releasing hormones. 
D) secrete steroids.

Question 20

A hormone that suppresses gluconeogenesis

Accepted Answer

A) increases the renal excretion of sodium and water. 
B) prevents hyperglycemia. 
C) causes diuresis. 
D) causes hypocalcemia. 
A) increases the renal excretion of sodium and water. 
B) prevents hyperglycemia. 
C) causes diuresis. 
D) causes hypocalcemia.

Exam 14: Endocrine System

T₃ and T₄

A deficiency of dietary iodine

As plasma levels of calcium decrease

Obesity

A deficiency of insulin causes

This hormone stimulates osteoclastic activity,causing bone resorption.

Insulin

Oxytocin

Epinephrine (adrenaline) increases blood glucose by

Which of the following hormones exerts negative feedback control on the secretion of ACTH?

Calcitonin and parathyroid hormone

Excess secretion of epinephrine

Testosterone is best described as

Identify the glands associated with these hormones: gonadotropins,aldosterone,and epinephrine.

Which group is incorrect?

Identify the glands that secrete these hormones: glucagon,PTH,and TSH.

Cretinism,myxedema,and Graves' disease are all

Thyroxine

The beta cells of the islets of Langerhans

A hormone that suppresses gluconeogenesis

Introduction to the Human Body

Basic Chemistry

Cells

Cell Metabolism

Microbiology Basics

Tissues and Membranes

Integumentary System and Body Temperature

Skeletal System

Muscular System

Nervous System: Nervous Tissue and Brain

Nervous System: Spinal Cord and Peripheral Nerves

Autonomic Nervous System

Sensory System

Blood

Anatomy of the Heart

Function of the Heart

Anatomy of the Blood Vessels and Special Circulations

Functions of the Blood Vessels

Lymphatic System

Immune System

Respiratory System

Digestive System

Urinary System

Water, Electrolyte, and Acidbase Balance

Reproductive Systems

Human Development and Heredity

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