Question 1

Which of these statements describes diurnal rhythms

Accepted Answer

A) They are inherent cyclical peaks and ebbs of hormone secretion that are a function of time and are entrained to the 24-hour light-dark cycle. 
B) They are important in maintaining hormone levels at a relatively constant set point, no matter the time of day. 
C) They occur only with cortisol secretion. 
D) They occur only with growth hormone secretion. 
A) They are inherent cyclical peaks and ebbs of hormone secretion that are a function of time and are entrained to the 24-hour light-dark cycle. 
B) They are important in maintaining hormone levels at a relatively constant set point, no matter the time of day. 
C) They occur only with cortisol secretion. 
D) They occur only with growth hormone secretion.

Question 2

A portal system exists between which of the following glands

Accepted Answer

A) adrenal cortex and adrenal medulla 
B) thyroid gland and parathyroid gland 
C) hypothalamus and posterior pituitary 
D) hypothalamus and anterior pituitary 
A) adrenal cortex and adrenal medulla 
B) thyroid gland and parathyroid gland 
C) hypothalamus and posterior pituitary 
D) hypothalamus and anterior pituitary

Question 3

Which of these statements describes amines

Accepted Answer

A) They consist of a chain of specific amino acids of varying length. 
B) They are derived from alanine. 
C) They include the hormones secreted by the thyroid gland and the adrenal medulla. 
D) They are derived from tyrosine. 
A) They consist of a chain of specific amino acids of varying length. 
B) They are derived from alanine. 
C) They include the hormones secreted by the thyroid gland and the adrenal medulla. 
D) They are derived from tyrosine.

Question 4

Match the systems, labelled a. through c. with their characteristics. (Options may be used more than once or not at all.)
-structural continuity in the system

Accepted Answer

A) the endocrine system 
B) the nervous system 
C) both the endocrine and nervous systems 
A) the endocrine system 
B) the nervous system 
C) both the endocrine and nervous systems

Question 5

Hormone activity is rapid compared to the effects of the nervous system.

Accepted Answer

A) True 
 B)False

Question 6

Match the solubility characteristics, labelled a. and b., with the classes of hormones. (Options may be used more than once or not at all.)
-catecholamines

Accepted Answer

A) lipophilic (hydrophobic) 
B) hydrophilic (lipophobic) 
A) lipophilic (hydrophobic) 
B) hydrophilic (lipophobic)

Question 7

Which of these statements describes hypophysiotropic hormones from the hypothalamus

Accepted Answer

A) They control the release of oxytocin and vasopressin from the posterior pituitary. 
B) They travel via neuron axons from the hypothalamus to the anterior pituitary. 
C) They are carried in the hypothalamic-hypophyseal portal system. 
D) They are released upon positive-feedback stimulation via the anterior pituitary tropic hormones. 
A) They control the release of oxytocin and vasopressin from the posterior pituitary. 
B) They travel via neuron axons from the hypothalamus to the anterior pituitary. 
C) They are carried in the hypothalamic-hypophyseal portal system. 
D) They are released upon positive-feedback stimulation via the anterior pituitary tropic hormones.

Question 8

Which of these events is stimulated by LH

Accepted Answer

A) destruction of the cells of Leydig 
B) enlargement of the follicles 
C) development of the hypothalamus 
D) formation of the corpus luteum 
A) destruction of the cells of Leydig 
B) enlargement of the follicles 
C) development of the hypothalamus 
D) formation of the corpus luteum

Question 9

The majority of hormones fall into the class of ______________________.

Accepted Answer

The answer of The majority of hormones fall into the...

Question 10

Which of these statements describes melanocyte-stimulating hormones

Accepted Answer

A) They are secreted by the hypothalamus. 
B) They are known to cause skin darkening in certain lower vertebrates. 
C) They are believed to be responsible for the tanning phenomenon in humans. 
D) They are responsible for circadian rhythm. 
A) They are secreted by the hypothalamus. 
B) They are known to cause skin darkening in certain lower vertebrates. 
C) They are believed to be responsible for the tanning phenomenon in humans. 
D) They are responsible for circadian rhythm.

Question 11

Which of these hormone types does NOT require membrane receptors to invoke cell responses

Accepted Answer

A) catecholamines 
B) steroids 
C) peptides 
D) parathyroid hormones 
A) catecholamines 
B) steroids 
C) peptides 
D) parathyroid hormones

Question 12

Hypophysiotropic-hormone secretion by the hypothalamus is regulated only by hormonal negative feedback.

Accepted Answer

A) True 
 B)False

Question 13

Each steroidogenic organ is capable of producing all of the steroid hormones.

Accepted Answer

A) True 
 B)False

Question 14

Match posterior and anterior pituitary, labelled a. through c., with their features. (Options may be used more than once or not at all.)
-releases hormones into the general circulation

Accepted Answer

A) applies to the posterior pituitary 
B) applies to the anterior pituitary 
C) applies to both the posterior and the anterior pituitary 
A) applies to the posterior pituitary 
B) applies to the anterior pituitary 
C) applies to both the posterior and the anterior pituitary

Question 15

Why do hormones have specificity

Accepted Answer

A) due to specialized hormone secretion 
B) due to molecular rearrangement at the site of action 
C) due to specific binding of hormones to plasma proteins 
D) due to specialization of target-cell receptors 
A) due to specialized hormone secretion 
B) due to molecular rearrangement at the site of action 
C) due to specific binding of hormones to plasma proteins 
D) due to specialization of target-cell receptors

Question 16

Which statement does NOT refer to post-receptor events of hydrophilic hormones

Accepted Answer

A) Adenylyl cyclase forms cyclic AMP. 
B) Cyclic AMP is a secondary messenger. 
C) Some hydrophilic hormones use Ca ions as a secondary messenger. 
D) Specific genes are activated. 
A) Adenylyl cyclase forms cyclic AMP. 
B) Cyclic AMP is a secondary messenger. 
C) Some hydrophilic hormones use Ca ions as a secondary messenger. 
D) Specific genes are activated.

Question 17

Neurohormones are hormones that specifically modify neural activity.

Accepted Answer

A) True 
 B)False

Question 18

Which of these statements represents long-loop, negative feedback in the CRH-ACTH-cortisol system

Accepted Answer

A) Cortisol inhibits CRH secretion. 
B) CRH inhibits ACTH secretion. 
C) ACTH inhibits CRH secretion. 
D) ACTH inhibits cortisol secretion. 
A) Cortisol inhibits CRH secretion. 
B) CRH inhibits ACTH secretion. 
C) ACTH inhibits CRH secretion. 
D) ACTH inhibits cortisol secretion.

Question 19

Match posterior and anterior pituitary, labelled a. through c., with their features. (Options may be used more than once or not at all.)
-also known as adenohypophysis

Accepted Answer

A) applies to the posterior pituitary 
B) applies to the anterior pituitary 
C) applies to both the posterior and the anterior pituitary 
A) applies to the posterior pituitary 
B) applies to the anterior pituitary 
C) applies to both the posterior and the anterior pituitary

Question 20

Dwarfism develops from a(n) ____________________ of growth hormone.

Accepted Answer

The answer of Dwarfism develops from a(n) ____________________ of growth...

Which of these statements describes diurnal rhythms

A portal system exists between which of the following glands

Which of these statements describes amines

Match the systems, labelled a. through c. with their characteristics. (Options may be used more than once or not at all.) -structural continuity in the system

Hormone activity is rapid compared to the effects of the nervous system.

Match the solubility characteristics, labelled a. and b., with the classes of hormones. (Options may be used more than once or not at all.) -catecholamines

Which of these statements describes hypophysiotropic hormones from the hypothalamus

Which of these events is stimulated by LH

The majority of hormones fall into the class of ______________________.

Which of these statements describes melanocyte-stimulating hormones

Which of these hormone types does NOT require membrane receptors to invoke cell responses

Hypophysiotropic-hormone secretion by the hypothalamus is regulated only by hormonal negative feedback.

Each steroidogenic organ is capable of producing all of the steroid hormones.

Match posterior and anterior pituitary, labelled a. through c., with their features. (Options may be used more than once or not at all.) -releases hormones into the general circulation

Why do hormones have specificity

Which statement does NOT refer to post-receptor events of hydrophilic hormones

Neurohormones are hormones that specifically modify neural activity.

Which of these statements represents long-loop, negative feedback in the CRH-ACTH-cortisol system

Match posterior and anterior pituitary, labelled a. through c., with their features. (Options may be used more than once or not at all.) -also known as adenohypophysis

Dwarfism develops from a(n) ____________________ of growth hormone.

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System: Sensory, Autonomic, Somatic

The Endocrine Glands

Muscle Physiology

Cardiac Physiology

Vascular Physiology

The Blood

Body Defences

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

The Reproductive System

Filters

Exam 5: Principles of Endocrinology: The Central Endocrine Glands

Which of these statements describes diurnal rhythms

A portal system exists between which of the following glands

Which of these statements describes amines

Match the systems, labelled a. through c. with their characteristics. (Options may be used more than once or not at all.) -structural continuity in the system

Hormone activity is rapid compared to the effects of the nervous system.

Match the solubility characteristics, labelled a. and b., with the classes of hormones. (Options may be used more than once or not at all.) -catecholamines

Which of these statements describes hypophysiotropic hormones from the hypothalamus

Which of these events is stimulated by LH

The majority of hormones fall into the class of ______________________.

Which of these statements describes melanocyte-stimulating hormones

Which of these hormone types does NOT require membrane receptors to invoke cell responses

Hypophysiotropic-hormone secretion by the hypothalamus is regulated only by hormonal negative feedback.

Each steroidogenic organ is capable of producing all of the steroid hormones.

Match posterior and anterior pituitary, labelled a. through c., with their features. (Options may be used more than once or not at all.) -releases hormones into the general circulation

Why do hormones have specificity

Which statement does NOT refer to post-receptor events of hydrophilic hormones

Neurohormones are hormones that specifically modify neural activity.

Which of these statements represents long-loop, negative feedback in the CRH-ACTH-cortisol system

Match posterior and anterior pituitary, labelled a. through c., with their features. (Options may be used more than once or not at all.) -also known as adenohypophysis

Dwarfism develops from a(n) ____________________ of growth hormone.

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System: Sensory, Autonomic, Somatic

The Endocrine Glands

Muscle Physiology

Cardiac Physiology

Vascular Physiology

The Blood

Body Defences

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

The Reproductive System

Filters