Question 1

Thyroid hormones are derived from the amino acid

Accepted Answer

A)  lysine. 
B)  leucine. 
C)  glycine. 
D)  tyrosine. 
E)  thyronine. 
A)  lysine. 
B)  leucine. 
C)  glycine. 
D)  tyrosine. 
E)  thyronine.

Question 2

The fact that epinephrine has no apparent effect on energy consumption unless thyroid hormones are present in normal concentrations is an example of a(n)

Accepted Answer

A)  antagonistic effect. 
B)  synergistic effect. 
C)  permissive effect. 
D)  opposing effect. 
E)  integrative effect. 
A)  antagonistic effect. 
B)  synergistic effect. 
C)  permissive effect. 
D)  opposing effect. 
E)  integrative effect.

Question 3

Target cells of hypothalamic releasing and inhibiting hormones are located in the

Accepted Answer

A)  thymus gland. 
B)  suprarenal gland. 
C)  anterior pituitary. 
D)  posterior pituitary. 
E)  testes. 
A)  thymus gland. 
B)  suprarenal gland. 
C)  anterior pituitary. 
D)  posterior pituitary. 
E)  testes.

Question 4

Which statement is true regarding structure L?

Accepted Answer

A)  This is the adrenal gland. 
B)  This organ is a major endocrine gland. 
C)  This organ makes no hormones. 
D)  The organ is labeled just because the adrenal gland sits upon it. 
E)  This organ has a secondary endocrine function. 
A)  This is the adrenal gland. 
B)  This organ is a major endocrine gland. 
C)  This organ makes no hormones. 
D)  The organ is labeled just because the adrenal gland sits upon it. 
E)  This organ has a secondary endocrine function.

Question 5

Figure 10-1 Organs and Tissues of the Endocrine System
Use Figure 10-1 to identify the labeled part.
-Structure C is the

Accepted Answer

A)  pituitary gland. 
B)  hypothalamus. 
C)  pineal gland. 
D)  thymus. 
E)  thyroid gland. 
A)  pituitary gland. 
B)  hypothalamus. 
C)  pineal gland. 
D)  thymus. 
E)  thyroid gland.

Question 6

The endocrine system

Accepted Answer

A)  releases neurotransmitters into the bloodstream for distribution throughout the body. 
B)  is regulated mainly by positive feedback. 
C)  produces effects that last for seconds or minutes. 
D)  is not involved in homeostasis. 
E)  relies on the release of chemicals that bind to target cells. 
A)  releases neurotransmitters into the bloodstream for distribution throughout the body. 
B)  is regulated mainly by positive feedback. 
C)  produces effects that last for seconds or minutes. 
D)  is not involved in homeostasis. 
E)  relies on the release of chemicals that bind to target cells.

Question 7

When blood glucose levels fall,

Accepted Answer

A)  insulin is released. 
B)  glucagon is released. 
C)  skeletal muscle cells convert glucose into glycogen for storage. 
D)  protein synthesis increases. 
E)  fat cells increase their rates of triglyceride synthesis. 
A)  insulin is released. 
B)  glucagon is released. 
C)  skeletal muscle cells convert glucose into glycogen for storage. 
D)  protein synthesis increases. 
E)  fat cells increase their rates of triglyceride synthesis.

Question 8

Insulin causes

Accepted Answer

A)  decreased rate of glucose transport into target cells. 
B)  decreased amino acid absorption. 
C)  conversion of glucose to glycogen in the liver and skeletal muscles. 
D)  increased breakdown of fats to fatty acids in adipose tissue. 
E)  increased blood glucose levels. 
A)  decreased rate of glucose transport into target cells. 
B)  decreased amino acid absorption. 
C)  conversion of glucose to glycogen in the liver and skeletal muscles. 
D)  increased breakdown of fats to fatty acids in adipose tissue. 
E)  increased blood glucose levels.

Question 9

Figure 10-1 Organs and Tissues of the Endocrine System
Use Figure 10-1 to identify the labeled part.
-Structure F is the

Accepted Answer

A)  pituitary gland. 
B)  hypothalamus. 
C)  pineal gland. 
D)  thymus. 
E)  thyroid gland. 
A)  pituitary gland. 
B)  hypothalamus. 
C)  pineal gland. 
D)  thymus. 
E)  thyroid gland.

Question 10

Figure 10-1 Organs and Tissues of the Endocrine System
Use Figure 10-1 to identify the labeled part.
-Structure E is the

Accepted Answer

A)  adrenal gland. 
B)  parathyroid gland. 
C)  ovary. 
D)  stomach. 
E)  pancreas. 
A)  adrenal gland. 
B)  parathyroid gland. 
C)  ovary. 
D)  stomach. 
E)  pancreas.

Question 11

An important second messenger in hormonal action is

Accepted Answer

A)  cAMP. 
B)  calcitriol. 
C)  insulin. 
D)  calcium. 
E)  glucagon. 
A)  cAMP. 
B)  calcitriol. 
C)  insulin. 
D)  calcium. 
E)  glucagon.

Question 12

The nervous system

Accepted Answer

A)  is ideal for crisis management. 
B)  communicates mainly by the release of hormones. 
C)  has effects that are very long-lived. 
D)  is regulated mainly by positive feedback. 
E)  does not rely on the binding of receptors to target cells. 
A)  is ideal for crisis management. 
B)  communicates mainly by the release of hormones. 
C)  has effects that are very long-lived. 
D)  is regulated mainly by positive feedback. 
E)  does not rely on the binding of receptors to target cells.

Question 13

Which statement is true about the adrenal glands?

Accepted Answer

A)  The adrenal cortex regulates the adrenal medulla. 
B)  The hormones of the adrenal cortex rely on control by the autonomic nervous system. 
C)  The adrenal cortex is most important in the control of sodium, potassium, and glucose blood levels. 
D)  The adrenal androgen hormones are found only in males. 
E)  The main hormone of the adrenal medulla is norepinephrine. 
A)  The adrenal cortex regulates the adrenal medulla. 
B)  The hormones of the adrenal cortex rely on control by the autonomic nervous system. 
C)  The adrenal cortex is most important in the control of sodium, potassium, and glucose blood levels. 
D)  The adrenal androgen hormones are found only in males. 
E)  The main hormone of the adrenal medulla is norepinephrine.

Question 14

When a protein or peptide hormone binds to receptors on the surface of a cell,

Accepted Answer

A)  the hormone receptor complex moves into the cytoplasm. 
B)  the plasma membrane becomes depolarized. 
C)  a second messenger appears in the cytoplasm. 
D)  the cell becomes inactive. 
E)  the hormone is transported to the nucleus, where it alters the activity of the DNA. 
A)  the hormone receptor complex moves into the cytoplasm. 
B)  the plasma membrane becomes depolarized. 
C)  a second messenger appears in the cytoplasm. 
D)  the cell becomes inactive. 
E)  the hormone is transported to the nucleus, where it alters the activity of the DNA.

Question 15

The hormone that inhibits osteoblasts is

Accepted Answer

A)  insulin. 
B)  glucagon. 
C)  growth hormone. 
D)  parathyroid hormone. 
E)  thyroid hormone. 
A)  insulin. 
B)  glucagon. 
C)  growth hormone. 
D)  parathyroid hormone. 
E)  thyroid hormone.

Question 16

Melatonin is the hormone produced by the

Accepted Answer

A)  anterior pituitary. 
B)  thyroid. 
C)  pineal gland. 
D)  thymus. 
E)  posterior pituitary. 
A)  anterior pituitary. 
B)  thyroid. 
C)  pineal gland. 
D)  thymus. 
E)  posterior pituitary.

Question 17

The hormone that causes the activation of osteoclasts is

Accepted Answer

A)  parathyroid hormone. 
B)  thyroid hormone. 
C)  calcitonin. 
D)  glucagon. 
E)  oxytocin. 
A)  parathyroid hormone. 
B)  thyroid hormone. 
C)  calcitonin. 
D)  glucagon. 
E)  oxytocin.

Question 18

Which of the following hormones is/are produced by both the testes and the ovaries?

Accepted Answer

A)  inhibin 
B)  estrogens 
C)  progestins 
D)  androgens 
E)  testosterone 
A)  inhibin 
B)  estrogens 
C)  progestins 
D)  androgens 
E)  testosterone

Question 19

The hormone oxytocin

Accepted Answer

A)  reduces uterine contractions. 
B)  is involved in the milk "letdown" reflex. 
C)  regulates blood pressure. 
D)  governs the ovarian cycle. 
E)  stimulates melanocytes in the skin. 
A)  reduces uterine contractions. 
B)  is involved in the milk "letdown" reflex. 
C)  regulates blood pressure. 
D)  governs the ovarian cycle. 
E)  stimulates melanocytes in the skin.

Question 20

This condition develops when the posterior pituitary no longer releases adequate amounts of ADH.

Accepted Answer

A)  diabetes mellitus 
B)  diabetes insipidus 
C)  pituitary dwarfism 
D)  exophthalmos 
E)  gigantism 
A)  diabetes mellitus 
B)  diabetes insipidus 
C)  pituitary dwarfism 
D)  exophthalmos 
E)  gigantism

Thyroid hormones are derived from the amino acid

The fact that epinephrine has no apparent effect on energy consumption unless thyroid hormones are present in normal concentrations is an example of a(n)

Target cells of hypothalamic releasing and inhibiting hormones are located in the

Which statement is true regarding structure L?

Figure 10-1 Organs and Tissues of the Endocrine System Use Figure 10-1 to identify the labeled part. -Structure C is the

The endocrine system

When blood glucose levels fall,

Insulin causes

Figure 10-1 Organs and Tissues of the Endocrine System Use Figure 10-1 to identify the labeled part. -Structure F is the

Figure 10-1 Organs and Tissues of the Endocrine System Use Figure 10-1 to identify the labeled part. -Structure E is the

An important second messenger in hormonal action is

The nervous system

Which statement is true about the adrenal glands?

When a protein or peptide hormone binds to receptors on the surface of a cell,

The hormone that inhibits osteoblasts is

Melatonin is the hormone produced by the

The hormone that causes the activation of osteoclasts is

Which of the following hormones is/are produced by both the testes and the ovaries?

The hormone oxytocin

This condition develops when the posterior pituitary no longer releases adequate amounts of ADH.

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

Cell Structure and Function

The Tissue Level of Organization

The Integumentary System

The Skeletal System

The Muscular System

The Nervous System

The General and Special Senses

The Cardiovascular System: Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

The Reproductive System

Development and Inheritance

Filters

Exam 10: The Endocrine System

Thyroid hormones are derived from the amino acid

The fact that epinephrine has no apparent effect on energy consumption unless thyroid hormones are present in normal concentrations is an example of a(n)

Target cells of hypothalamic releasing and inhibiting hormones are located in the

Which statement is true regarding structure L?

Figure 10-1 Organs and Tissues of the Endocrine System Use Figure 10-1 to identify the labeled part. -Structure C is the

The endocrine system

When blood glucose levels fall,

Insulin causes

Figure 10-1 Organs and Tissues of the Endocrine System Use Figure 10-1 to identify the labeled part. -Structure F is the

Figure 10-1 Organs and Tissues of the Endocrine System Use Figure 10-1 to identify the labeled part. -Structure E is the

An important second messenger in hormonal action is

The nervous system

Which statement is true about the adrenal glands?

When a protein or peptide hormone binds to receptors on the surface of a cell,

The hormone that inhibits osteoblasts is

Melatonin is the hormone produced by the

The hormone that causes the activation of osteoclasts is

Which of the following hormones is/are produced by both the testes and the ovaries?

The hormone oxytocin

This condition develops when the posterior pituitary no longer releases adequate amounts of ADH.

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

Cell Structure and Function

The Tissue Level of Organization

The Integumentary System

The Skeletal System

The Muscular System

The Nervous System

The General and Special Senses

The Cardiovascular System: Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

The Reproductive System

Development and Inheritance

Filters