Question 1

Which of the following situations represents negative feedback?

Accepted Answer

A) Hormone A stimulates hormone B; hormone B inhibits hormone C. 
B) Hormone A inhibits hormone B; hormone B inhibits hormone A. 
C) Hormone A stimulates hormone B; hormone B inhibits hormone A. 
D) Hormone A inhibits hormone B; hormone B inhibits hormone C. 
E) Hormone A stimulates hormone B; hormone B stimulates hormone A. 
A) Hormone A stimulates hormone B; hormone B inhibits hormone C. 
B) Hormone A inhibits hormone B; hormone B inhibits hormone A. 
C) Hormone A stimulates hormone B; hormone B inhibits hormone A. 
D) Hormone A inhibits hormone B; hormone B inhibits hormone C. 
E) Hormone A stimulates hormone B; hormone B stimulates hormone A. C

Question 2

Plasma concentrations of a hormone are normally regulated by changes in secretion rate.

Accepted Answer

A) True 
 B)False  True

Question 3

The somatomedins are insulin-like growth factors.

Accepted Answer

A) True 
 B)False  True

Question 4

Melatonin is secreted from the ____________________.

Accepted Answer

The answer of Melatonin is secreted from the ____________________....

Question 5

Acromegaly develops from a deficiency of the growth hormone.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following is true about hormones?

Accepted Answer

A) They are released from exocrine glands. 
B) They interact with receptors at target-cell sites. 
C) They are synthesized in the lymph nodes. 
D) They interact with receptors in the blood. 
E) They are all similar chemically. 
A) They are released from exocrine glands. 
B) They interact with receptors at target-cell sites. 
C) They are synthesized in the lymph nodes. 
D) They interact with receptors in the blood. 
E) They are all similar chemically.

Question 7

Indicate whether the characteristics below apply to the endocrine system, the nervous system, or both by writing the appropriate letter in the blank using the following answer code:
a.Endocrine system
b.Nervous system
c.Endocrine and nervous systems
-Controls activities that require longer duration rather than speed

Accepted Answer

The answer of Indicate whether the characteristics below apply to...

Question 8

Indicate which characteristics in the left column apply to the hormones below by writing the appropriate letters in the blanks.
a.Steroids
b.Catecholamines
c.Peptides
d.Thyroid hormone
-Synthesized by enzymatic modification of cholesterol

Accepted Answer

The answer of Indicate which characteristics in the left column...

Question 9

The _________ releases corticotropin in response to _______ from the _______.

Accepted Answer

A) anterior pituitary; cortisol; hypothalamus 
B) hypothalamus; cortisol; adrenal gland 
C) adrenal gland; ACTH; anterior pituitary 
D) anterior pituitary; CRH; hypothalamus 
E) posterior pituitary; corticotropin-releasing hormone; hypothalamus 
A) anterior pituitary; cortisol; hypothalamus 
B) hypothalamus; cortisol; adrenal gland 
C) adrenal gland; ACTH; anterior pituitary 
D) anterior pituitary; CRH; hypothalamus 
E) posterior pituitary; corticotropin-releasing hormone; hypothalamus

Question 10

Negative-feedback control tends to maintain hormone levels at a relatively constant set point, whereas neuroendocrine reflexes usually produce a sudden increase in hormone secretion in response to a specific stimulus.

Accepted Answer

A) True 
 B)False

Question 11

The posterior pituitary

Accepted Answer

A) secretes ADH 
B) stores anterior pituitary hormones 
C) stores ACTH and LH 
D) secretes vasopressin and oxytocin into the hypothalamo-hypophyseal portal system 
E) does none of the above 
A) secretes ADH 
B) stores anterior pituitary hormones 
C) stores ACTH and LH 
D) secretes vasopressin and oxytocin into the hypothalamo-hypophyseal portal system 
E) does none of the above

Question 12

Growth hormone

Accepted Answer

A) directly stimulates bone growth 
B) exerts its effects on bones via somatomedin release 
C) promotes closure of the epiphyseal plate 
D) does both a and c 
E) does both b and c 
A) directly stimulates bone growth 
B) exerts its effects on bones via somatomedin release 
C) promotes closure of the epiphyseal plate 
D) does both a and c 
E) does both b and c

Question 13

A portal system exists between the

Accepted Answer

A) adrenal cortex and adrenal medulla 
B) hypothalamus and anterior pituitary 
C) hypothalamus and posterior pituitary 
D) small intestine and liver 
E) both b and d 
A) adrenal cortex and adrenal medulla 
B) hypothalamus and anterior pituitary 
C) hypothalamus and posterior pituitary 
D) small intestine and liver 
E) both b and d

Question 14

Hydrophilic hormones exert their effects primarily by activating second-messenger systems within their target cells.

Accepted Answer

A) True 
 B)False

Question 15

Melanocyte-stimulating hormones play a role in determining the different amount of melanin in the skin of various human races.

Accepted Answer

A) True 
 B)False

Question 16

Osteoblasts

Accepted Answer

A) secrete the organic matrix components of bone 
B) become osteocytes once they become entrapped in the bone that they form 
C) are primarily responsible for dissolving bone matrix 
D) form cartilage 
E) have characteristics a and b 
A) secrete the organic matrix components of bone 
B) become osteocytes once they become entrapped in the bone that they form 
C) are primarily responsible for dissolving bone matrix 
D) form cartilage 
E) have characteristics a and b

Question 17

Indicate whether the characteristics below apply to the endocrine system, the nervous system, or both by writing the appropriate letter in the blank using the following answer code:
a.Endocrine system
b.Nervous system
c.Endocrine and nervous systems
-Chemical messengers act at a long distance from their site of secretion

Accepted Answer

The answer of Indicate whether the characteristics below apply to...

Question 18

Insulin is produced as a precursor for another hormone.

Accepted Answer

A) True 
 B)False

Question 19

Indicate whether the characteristics below apply to the endocrine system, the nervous system, or both by writing the appropriate letter in the blank using the following answer code:
a.Endocrine system
b.Nervous system
c.Endocrine and nervous systems
-Cerebral cortex can influence activities

Accepted Answer

The answer of Indicate whether the characteristics below apply to...

Question 20

Hormones

Accepted Answer

A) are all of similar chemical composition 
B) combine with specific receptors on the target cell's surface or inside the target cell 
C) are secreted at a constant rate 
D) all act by activating adenylate cyclase, which transforms ATP into cyclic AMP 
E) have all of the above characteristics 
A) are all of similar chemical composition 
B) combine with specific receptors on the target cell's surface or inside the target cell 
C) are secreted at a constant rate 
D) all act by activating adenylate cyclase, which transforms ATP into cyclic AMP 
E) have all of the above characteristics

Which of the following situations represents negative feedback?

Plasma concentrations of a hormone are normally regulated by changes in secretion rate.

The somatomedins are insulin-like growth factors.

Melatonin is secreted from the ____________________.

Acromegaly develops from a deficiency of the growth hormone.

Which of the following is true about hormones?

Indicate which characteristics in the left column apply to the hormones below by writing the appropriate letters in the blanks. a.Steroids b.Catecholamines c.Peptides d.Thyroid hormone -Synthesized by enzymatic modification of cholesterol

The _____ releases corticotropin in response to _ from the _____.

Negative-feedback control tends to maintain hormone levels at a relatively constant set point, whereas neuroendocrine reflexes usually produce a sudden increase in hormone secretion in response to a specific stimulus.

The posterior pituitary

Growth hormone

A portal system exists between the

Hydrophilic hormones exert their effects primarily by activating second-messenger systems within their target cells.

Melanocyte-stimulating hormones play a role in determining the different amount of melanin in the skin of various human races.

Osteoblasts

Insulin is produced as a precursor for another hormone.

Indicate whether the characteristics below apply to the endocrine system, the nervous system, or both by writing the appropriate letter in the blank using the following answer code: a.Endocrine system b.Nervous system c.Endocrine and nervous systems -Cerebral cortex can influence activities

Hormones

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System: Afferent Division Special Senses

The Peripheral Nervous System: Efferent Division

Muscle Physiology

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Peripheral Endocrine Glands

The Reproductive System

Filters

Exam 18: Principles of Endocrinology: the Central Endocrine Glands

Which of the following situations represents negative feedback?

Plasma concentrations of a hormone are normally regulated by changes in secretion rate.

The somatomedins are insulin-like growth factors.

Melatonin is secreted from the ____________________.

Acromegaly develops from a deficiency of the growth hormone.

Which of the following is true about hormones?

Indicate which characteristics in the left column apply to the hormones below by writing the appropriate letters in the blanks. a.Steroids b.Catecholamines c.Peptides d.Thyroid hormone -Synthesized by enzymatic modification of cholesterol

The _________ releases corticotropin in response to _______ from the _______.

Negative-feedback control tends to maintain hormone levels at a relatively constant set point, whereas neuroendocrine reflexes usually produce a sudden increase in hormone secretion in response to a specific stimulus.

The posterior pituitary

Growth hormone

A portal system exists between the

Hydrophilic hormones exert their effects primarily by activating second-messenger systems within their target cells.

Melanocyte-stimulating hormones play a role in determining the different amount of melanin in the skin of various human races.

Osteoblasts

Insulin is produced as a precursor for another hormone.

Indicate whether the characteristics below apply to the endocrine system, the nervous system, or both by writing the appropriate letter in the blank using the following answer code: a.Endocrine system b.Nervous system c.Endocrine and nervous systems -Cerebral cortex can influence activities

Hormones

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System: Afferent Division Special Senses

The Peripheral Nervous System: Efferent Division

Muscle Physiology

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Peripheral Endocrine Glands

The Reproductive System

Filters

The _____ releases corticotropin in response to _ from the _____.