Question 1

Select the incorrect statement.

Accepted Answer

A)  Adenyl cyclase forms cyclic AMP. 
B)  Cyclic AMP is a secondary messenger. 
C)  Some hydrophilic hormones use Ca2+ ions as a secondary messenger. 
D)  Steroid hormones use second messenger to influence their target cells. 
E)  The hydrophilic hormone binds to a membrane receptor. 
A)  Adenyl cyclase forms cyclic AMP. 
B)  Cyclic AMP is a secondary messenger. 
C)  Some hydrophilic hormones use Ca2+ ions as a secondary messenger. 
D)  Steroid hormones use second messenger to influence their target cells. 
E)  The hydrophilic hormone binds to a membrane receptor.

Question 2

Oxytocin and vasopressin are carried in the hypothalamic-hypophyseal portal system.

Accepted Answer

A) True 
 B)False

Question 3

Complete each of the following statments.
This releasing hormone ____________________ ultimately causes secretion of adrenocorticosteroids.

Accepted Answer

corticotro

Question 4

Hormones produced in the anterior pituitary

Accepted Answer

A)  are made in distinct populations of cells 
B)  may be tropic or nontropic 
C)  are secreted into the blood 
D)  are released in response to certain hormones 
E)  all of these 
A)  are made in distinct populations of cells 
B)  may be tropic or nontropic 
C)  are secreted into the blood 
D)  are released in response to certain hormones 
E)  all of these

Question 5

Which of the following is not a function of the endocrine system?

Accepted Answer

A)  maintenance of blood sugar levels 
B)  regulation of metabolic activity and H2O and electrolyte balance 
C)  promotion of growth and development 
D)  transduction of external stimuli 
E)  helping the body cope with stressful situations 
A)  maintenance of blood sugar levels 
B)  regulation of metabolic activity and H2O and electrolyte balance 
C)  promotion of growth and development 
D)  transduction of external stimuli 
E)  helping the body cope with stressful situations

Question 6

Which of the classes of hormones are synthesized by the endoplasmic reticulum-Golgi complex mechanism?

Accepted Answer

A)  peptides 
B)  catecholamines 
C)  steroids 
D)  thyroid hormone 
E)  peptides and thyroid hormone 
A)  peptides 
B)  catecholamines 
C)  steroids 
D)  thyroid hormone 
E)  peptides and thyroid hormone

Question 7

The effective plasma concentration of a hormone is normally regulated by appropriate adjustments in the hormone's

Accepted Answer

A)  rate of excretion 
B)  extent of binding to plasma proteins 
C)  rate of metabolic inactivation 
D)  rate of secretion 
E)  rate of binding with target-cell receptors 
A)  rate of excretion 
B)  extent of binding to plasma proteins 
C)  rate of metabolic inactivation 
D)  rate of secretion 
E)  rate of binding with target-cell receptors

Question 8

Which statement regarding vasopressin is incorrect?

Accepted Answer

A)  It is produced in the hypothalamus. 
B)  It stimulates uterine smooth muscle contraction. 
C)  It increases kidney reabsorption of water. 
D)  It is a potent arteriolar vasoconstrictor. 
E)  It is released when the osmolarity of the plasma increases. 
A)  It is produced in the hypothalamus. 
B)  It stimulates uterine smooth muscle contraction. 
C)  It increases kidney reabsorption of water. 
D)  It is a potent arteriolar vasoconstrictor. 
E)  It is released when the osmolarity of the plasma increases.

Question 9

Growth hormone

Accepted Answer

A)  levels in the blood are directly correlated with the rate of growth throughout life 
B)  stimulates the secretion of somatomedins 
C)  stimulates osteoclast activity 
D)  stimulates the secretion of somatomedins and osteoclast activity 
E)  none of these 
A)  levels in the blood are directly correlated with the rate of growth throughout life 
B)  stimulates the secretion of somatomedins 
C)  stimulates osteoclast activity 
D)  stimulates the secretion of somatomedins and osteoclast activity 
E)  none of these

Question 10

Melatonin is produced in which gland?

Accepted Answer

A)  anterior pituitary 
B)  posterior pituitary 
C)  pineal 
D)  hypothalamus 
E)  thyroid 
A)  anterior pituitary 
B)  posterior pituitary 
C)  pineal 
D)  hypothalamus 
E)  thyroid

Question 11

Dwarfism may be due to growth hormone deficiency in adults.

Accepted Answer

A) True 
 B)False

Question 12

Light is a crucial factor in regulating circadian rhythms.

Accepted Answer

A) True 
 B)False

Question 13

Complete each of the following statments.
The majority of hormones fall into the class of ____________________ hormones.

Accepted Answer

The answer of Complete each of the following statments.
The majority...

Question 14

Which of the following has a direct anatomical connection to the hypothalamus?

Accepted Answer

A)  adrenal gland 
B)  posterior pituitary 
C)  thyroid gland 
D)  parathyroid gland 
E)  none of these 
A)  adrenal gland 
B)  posterior pituitary 
C)  thyroid gland 
D)  parathyroid gland 
E)  none of these

Question 15

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

Accepted Answer

A) True 
 B)False

Question 16

Complete each of the following statments.
Dwarfism develops from a(n) ____________________ of the growth hormone.

Accepted Answer

The answer of Complete each of the following statments.
Dwarfism develops...

Question 17

The most common second messenger used by hydrophilic hormones is

Accepted Answer

A)  calcium 
B)  cyclic AMP 
C)  chromatin 
D)  messenger RNA 
E)  plasma proteins 
A)  calcium 
B)  cyclic AMP 
C)  chromatin 
D)  messenger RNA 
E)  plasma proteins

Question 18

Which class of hormones are polar and, accordingly, hydrophilic?

Accepted Answer

A)  peptides 
B)  catecholamines 
C)  Steroids 
D)  peptides and catecholamines 
E)  none of these 
A)  peptides 
B)  catecholamines 
C)  Steroids 
D)  peptides and catecholamines 
E)  none of these

Question 19

Lipophilic hormones

Accepted Answer

A)  include steroids and thyroid hormone 
B)  bind with receptors located inside their target cells 
C)  activate second-messenger systems within their target cells 
D)  include steroids and thyroid hormone and bind with receptors located inside their target cells 
E)  all of these 
A)  include steroids and thyroid hormone 
B)  bind with receptors located inside their target cells 
C)  activate second-messenger systems within their target cells 
D)  include steroids and thyroid hormone and bind with receptors located inside their target cells 
E)  all of these

Question 20

Which statement about tropic hormones is incorrect?

Accepted Answer

A)  They may stimulate the secretion of other hormones. 
B)  They target other glands. 
C)  They are all produced in the anterior pituitary. 
D)  They may stimulate the secretion of other hormones and they target other glands. 
E)  All of these. 
A)  They may stimulate the secretion of other hormones. 
B)  They target other glands. 
C)  They are all produced in the anterior pituitary. 
D)  They may stimulate the secretion of other hormones and they target other glands. 
E)  All of these.

Exam 18: A--Principles of Endocrinology: the Central Endocrine Glands

Select the incorrect statement.

Oxytocin and vasopressin are carried in the hypothalamic-hypophyseal portal system.

Complete each of the following statments. This releasing hormone ____________________ ultimately causes secretion of adrenocorticosteroids.

Hormones produced in the anterior pituitary

Which of the following is not a function of the endocrine system?

Which of the classes of hormones are synthesized by the endoplasmic reticulum-Golgi complex mechanism?

The effective plasma concentration of a hormone is normally regulated by appropriate adjustments in the hormone's

Which statement regarding vasopressin is incorrect?

Growth hormone

Melatonin is produced in which gland?

Dwarfism may be due to growth hormone deficiency in adults.

Light is a crucial factor in regulating circadian rhythms.

Complete each of the following statments. The majority of hormones fall into the class of ____________________ hormones.

Which of the following has a direct anatomical connection to the hypothalamus?

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

Complete each of the following statments. Dwarfism develops from a(n) ____________________ of the growth hormone.

The most common second messenger used by hydrophilic hormones is

Which class of hormones are polar and, accordingly, hydrophilic?

Lipophilic hormones

Which statement about tropic hormones is incorrect?

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

A--The Central Nervous System

B--The Central Nervous System

A--The Peripheral Nervous System: Afferent Division; Special Senses

B--The Peripheral Nervous System: Afferent Division; Special Senses

The Peripheral Nervous System: Efferent Division

A--Muscle Physiology

B--Muscle Physiology

A--Cardiac Physiology

B--Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

A--The Respiratory System

B--The Respiratory System

A--The Urinary System

B--The Urinary System

A--Fluid and Acid-Base Balance

B--Fluid and Acid-Base Balance

A--The Digestive System

B--The Digestive System

Energy Balance and Temperature Regulation

B--Principles of Endocrinology: the Central Endocrine Glands

A--The Peripheral Endocrine Glands

B--The Peripheral Endocrine Glands

A--The Reproductive System

B--The Reproductive System

Filters