Question 1

Hormones alter cellular properties and functions by

Accepted Answer

A)  changing the quantities of enzymes present. 
B)  opening or closing ion channels. 
C)  changing the rate of enzyme breakdown. 
D)  changing the rates of transcription or translation in a cell. 
E)  All of these are true. 
A)  changing the quantities of enzymes present. 
B)  opening or closing ion channels. 
C)  changing the rate of enzyme breakdown. 
D)  changing the rates of transcription or translation in a cell. 
E)  All of these are true.

Question 2

The thymus gland

Accepted Answer

A)  becomes smaller with increasing age. 
B)  is important in the function of the immune system. 
C)  secretes thymosin. 
D)  is found in the upper part of the thoracic cavity above the heart. 
E)  has all of these characteristics. 
A)  becomes smaller with increasing age. 
B)  is important in the function of the immune system. 
C)  secretes thymosin. 
D)  is found in the upper part of the thoracic cavity above the heart. 
E)  has all of these characteristics.

Question 3

Which of the following is NOT a regulatory function of the endocrine system?

Accepted Answer

A)  Regulates water balance by controlling the solute concentration of the blood. 
B)  Regulates skeletal muscle contraction strength. 
C)  Regulates satiation and the breakdown of food into individual nutrients. 
D)  Regulates the rate of metabolism. 
E)  Regulates the levels of nutrients such as glucose in the blood. 
A)  Regulates water balance by controlling the solute concentration of the blood. 
B)  Regulates skeletal muscle contraction strength. 
C)  Regulates satiation and the breakdown of food into individual nutrients. 
D)  Regulates the rate of metabolism. 
E)  Regulates the levels of nutrients such as glucose in the blood.

Question 4

____________ are intercellular chemical signals, secreted by nerve cells and are important in functions of the nervous system.

Accepted Answer

A)  Pheromones 
B)  Hormones 
C)  Neurotransmitters 
D)  Autocrine agents 
E)  Paracrine agents 
A)  Pheromones 
B)  Hormones 
C)  Neurotransmitters 
D)  Autocrine agents 
E)  Paracrine agents

Question 5

The adrenal medulla

Accepted Answer

A)  is stimulated by the sympathetic nervous system. 
B)  produces epinephrine and norepinephrine. 
C)  is stimulated when a person is physically excited. 
D)  produces the "fight-or-flight" response. 
E)  has all of these properties. 
A)  is stimulated by the sympathetic nervous system. 
B)  produces epinephrine and norepinephrine. 
C)  is stimulated when a person is physically excited. 
D)  produces the "fight-or-flight" response. 
E)  has all of these properties.

Question 6

The structure that makes releasing and inhibiting hormones which control anterior pituitary hormone secretion is the:

Accepted Answer

A)  anterior pituitary 
B)  posterior pituitary 
C)  hypothalamus 
D)  adrenal gland 
E)  pineal gland 
A)  anterior pituitary 
B)  posterior pituitary 
C)  hypothalamus 
D)  adrenal gland 
E)  pineal gland

Question 7

A man with an abnormally high level of melanocyte stimulating hormone (MSH), would exhibit which of the following symptoms?

Accepted Answer

A)  hyperglycemia 
B)  reduced sperm production 
C)  increased frequency of urination 
D)  darkening of the skin 
E)  constant thirst 
A)  hyperglycemia 
B)  reduced sperm production 
C)  increased frequency of urination 
D)  darkening of the skin 
E)  constant thirst

Question 8

Which of the following changes to the endocrine system is not a result of aging?

Accepted Answer

A)  GH secretion decreases 
B)  Melatonin secretion decreases 
C)  Thyroid hormone secretion decreases 
D)  Parathyroid hormone secretion decreases 
A)  GH secretion decreases 
B)  Melatonin secretion decreases 
C)  Thyroid hormone secretion decreases 
D)  Parathyroid hormone secretion decreases

Question 9

Calcitonin

Accepted Answer

A)  is secreted by the parathyroid glands. 
B)  increases the amount of calcium absorbed by the intestine. 
C)  is synthesized by C cells of the thyroid gland. 
D)  increases the rate of calcium release from bone. 
E)  is secreted when blood calcium levels drop too low. 
A)  is secreted by the parathyroid glands. 
B)  increases the amount of calcium absorbed by the intestine. 
C)  is synthesized by C cells of the thyroid gland. 
D)  increases the rate of calcium release from bone. 
E)  is secreted when blood calcium levels drop too low.

Question 10

T3 (triiododthyronine)

Accepted Answer

A)  synthesis requires calcium. 
B)  binding to target tissues causes increases in metabolism, body temperature, and normal growth. 
C)  contains four iodine molecules. 
D)  is released from the thymus gland. 
E)  is released in response to T4 secretion. 
A)  synthesis requires calcium. 
B)  binding to target tissues causes increases in metabolism, body temperature, and normal growth. 
C)  contains four iodine molecules. 
D)  is released from the thymus gland. 
E)  is released in response to T4 secretion.

Question 11

Symptoms of diabetes mellitus include

Accepted Answer

A)  increased appetite. 
B)  lack of thirst. 
C)  high energy level. 
D)  limited urine output. 
E)  All of these are true. 
A)  increased appetite. 
B)  lack of thirst. 
C)  high energy level. 
D)  limited urine output. 
E)  All of these are true.

Question 12

______________ are chemical signals secreted into the environment that modify the behavior and physiology of other individuals.

Accepted Answer

A)  Pheromones 
B)  Hormones 
C)  Neurotransmitters 
D)  Autocrine agents 
E)  Paracrine agents 
A)  Pheromones 
B)  Hormones 
C)  Neurotransmitters 
D)  Autocrine agents 
E)  Paracrine agents

Question 13

ADH

Accepted Answer

A)  is sometimes called oxytocin. 
B)  can cause blood vessels to constrict when present in the blood in large amounts. 
C)  causes "milk letdown" from the breasts of lactating women. 
D)  stimulates melanocytes and causes them to synthesize melanin. 
E)  is sometimes called oxytocin and can cause blood vessels to constrict when present in the blood in large amounts as properties. 
A)  is sometimes called oxytocin. 
B)  can cause blood vessels to constrict when present in the blood in large amounts. 
C)  causes "milk letdown" from the breasts of lactating women. 
D)  stimulates melanocytes and causes them to synthesize melanin. 
E)  is sometimes called oxytocin and can cause blood vessels to constrict when present in the blood in large amounts as properties.

Question 14

Intracellular receptors

Accepted Answer

A)  are located in the cytoplasm or nucleus of the cell. 
B)  typically bind to lipophillic (hydrophobic) chemical signals. 
C)  are exemplified by hormones such as steroids. 
D)  may cause changes in transcription and translation when bound to appropriate signals. 
E)  All of these are true of intracellular receptors. 
A)  are located in the cytoplasm or nucleus of the cell. 
B)  typically bind to lipophillic (hydrophobic) chemical signals. 
C)  are exemplified by hormones such as steroids. 
D)  may cause changes in transcription and translation when bound to appropriate signals. 
E)  All of these are true of intracellular receptors.

Question 15

Hyperparathyroidism

Accepted Answer

A)  is an abnormally low production or secretion of parathyroid hormone (PTH). 
B)  results in an increase in blood cell production. 
C)  results in an increase in calcium levels in the blood. 
D)  is an abnormally high production of calcitonin. 
E)  is caused by an increase in the absorption of potassium from the small intestine. 
A)  is an abnormally low production or secretion of parathyroid hormone (PTH). 
B)  results in an increase in blood cell production. 
C)  results in an increase in calcium levels in the blood. 
D)  is an abnormally high production of calcitonin. 
E)  is caused by an increase in the absorption of potassium from the small intestine.

Question 16

Which of these hormones increases blood glucose levels and increases lipid breakdown, but slows protein breakdown?

Accepted Answer

A)  glucagon 
B)  epinephrine 
C)  insulin 
D)  glucocorticoids 
E)  growth hormone 
A)  glucagon 
B)  epinephrine 
C)  insulin 
D)  glucocorticoids 
E)  growth hormone

Question 17

Thyroid hormones:

Accepted Answer

A)  are amino acid derivatives 
B)  are lipid soluble 
C)  can diffuse through the cell membrane of the target cell 
D)  bind to intracellular receptors in the target cell 
E)  All of the items are true of thyroid hormones. 
A)  are amino acid derivatives 
B)  are lipid soluble 
C)  can diffuse through the cell membrane of the target cell 
D)  bind to intracellular receptors in the target cell 
E)  All of the items are true of thyroid hormones.

Question 18

Which of these statements concerning aldosterone secretion is NOT correct?

Accepted Answer

A)  Low blood pressure stimulates the release of renin from the kidney. 
B)  Renin causes angiotensinogen to be converted to angiotensin I. 
C)  Angiotensin II acts on the adrenal cortex to increase aldosterone secretion. 
D)  Aldosterone causes increased potassium retention. 
E)  Angiotensin II constricts blood vessels. 
A)  Low blood pressure stimulates the release of renin from the kidney. 
B)  Renin causes angiotensinogen to be converted to angiotensin I. 
C)  Angiotensin II acts on the adrenal cortex to increase aldosterone secretion. 
D)  Aldosterone causes increased potassium retention. 
E)  Angiotensin II constricts blood vessels.

Question 19

Target cells in the thyroid gland respond to

Accepted Answer

A)  LH. 
B)  prolactin. 
C)  ACTH. 
D)  ADH. 
E)  TSH. 
A)  LH. 
B)  prolactin. 
C)  ACTH. 
D)  ADH. 
E)  TSH.

Question 20

The hypothalamic-pituitary portal system

Accepted Answer

A)  is a collection of nerves that connect the hypothalamus and posterior pituitary. 
B)  includes capillary beds and veins that transport releasing hormones. 
C)  allows the anterior pituitary to control the hypothalamus and cerebrum. 
D)  connects the hypothalamus to the midbrain. 
E)  carries blood directly to the posterior pituitary. 
A)  is a collection of nerves that connect the hypothalamus and posterior pituitary. 
B)  includes capillary beds and veins that transport releasing hormones. 
C)  allows the anterior pituitary to control the hypothalamus and cerebrum. 
D)  connects the hypothalamus to the midbrain. 
E)  carries blood directly to the posterior pituitary.

Hormones alter cellular properties and functions by

The thymus gland

Which of the following is NOT a regulatory function of the endocrine system?

____________ are intercellular chemical signals, secreted by nerve cells and are important in functions of the nervous system.

The adrenal medulla

The structure that makes releasing and inhibiting hormones which control anterior pituitary hormone secretion is the:

A man with an abnormally high level of melanocyte stimulating hormone (MSH), would exhibit which of the following symptoms?

Which of the following changes to the endocrine system is not a result of aging?

Calcitonin

T₃ (triiododthyronine)

Symptoms of diabetes mellitus include

______________ are chemical signals secreted into the environment that modify the behavior and physiology of other individuals.

ADH

Intracellular receptors

Hyperparathyroidism

Which of these hormones increases blood glucose levels and increases lipid breakdown, but slows protein breakdown?

Thyroid hormones:

Which of these statements concerning aldosterone secretion is NOT correct?

Target cells in the thyroid gland respond to

The hypothalamic-pituitary portal system

The Human Organism

The Chemical Basis of Life

Cell Structures and Their Functions

Tissuesasis of Life

Integumentary System

Skeletal System: Bones and Joints

Muscular System

Nervous System

Senses

Blood

Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition, Metabolism, and Body Temperature Regulation

Urinary System and Fluid Balance

Reproductive System

Development, Heredity, and Aging

Filters

Exam 10: Endocrine System

Hormones alter cellular properties and functions by

The thymus gland

Which of the following is NOT a regulatory function of the endocrine system?

____________ are intercellular chemical signals, secreted by nerve cells and are important in functions of the nervous system.

The adrenal medulla

The structure that makes releasing and inhibiting hormones which control anterior pituitary hormone secretion is the:

A man with an abnormally high level of melanocyte stimulating hormone (MSH), would exhibit which of the following symptoms?

Which of the following changes to the endocrine system is not a result of aging?

Calcitonin

T3 (triiododthyronine)

Symptoms of diabetes mellitus include

______________ are chemical signals secreted into the environment that modify the behavior and physiology of other individuals.

ADH

Intracellular receptors

Hyperparathyroidism

Which of these hormones increases blood glucose levels and increases lipid breakdown, but slows protein breakdown?

Thyroid hormones:

Which of these statements concerning aldosterone secretion is NOT correct?

Target cells in the thyroid gland respond to

The hypothalamic-pituitary portal system

The Human Organism

The Chemical Basis of Life

Cell Structures and Their Functions

Tissuesasis of Life

Integumentary System

Skeletal System: Bones and Joints

Muscular System

Nervous System

Senses

Blood

Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition, Metabolism, and Body Temperature Regulation

Urinary System and Fluid Balance

Reproductive System

Development, Heredity, and Aging

Filters

T₃ (triiododthyronine)