Question 1

Which of the following is an effect of increased levels of antidiuretic hormone in the blood?

Accepted Answer

A)  Letdown of milk from mammary tissues 
B)  Uterine contractions during birth 
C)  Water conservation by the kidney 
D)  Production of somatomedins by the liver 
E)  Production of enkephalins by the hypothalamus 
A)  Letdown of milk from mammary tissues 
B)  Uterine contractions during birth 
C)  Water conservation by the kidney 
D)  Production of somatomedins by the liver 
E)  Production of enkephalins by the hypothalamus

Question 2

Insect prothoracicotropic hormone (PTTH)

Accepted Answer

A)  stimulates the prothoracic gland to release the hormone that stimulates molting. 
B)  stimulates the corpora cardiaca to release molting hormone. 
C)  directly stimulates molting if food reserves are adequate. 
D)  inhibits molting until the insect is a certain size. 
E)  inhibits insect growth. 
A)  stimulates the prothoracic gland to release the hormone that stimulates molting. 
B)  stimulates the corpora cardiaca to release molting hormone. 
C)  directly stimulates molting if food reserves are adequate. 
D)  inhibits molting until the insect is a certain size. 
E)  inhibits insect growth.

Question 3

If the circulating levels of calcium are low, _______ stimulates the osteoclasts to break down bone and release it.

Accepted Answer

The answer of If the circulating levels of calcium are...

Question 4

The half-life of hormones in the plasma ranges from _______ to _______.

Accepted Answer

A)  seconds; minutes 
B)  minutes; hours 
C)  minutes; days or weeks 
D)  days; weeks 
E)  hours; months 
A)  seconds; minutes 
B)  minutes; hours 
C)  minutes; days or weeks 
D)  days; weeks 
E)  hours; months

Question 5

Which of the following statements about regulation of hormone receptors is false?

Accepted Answer

A)  Continuous high levels of a hormone can decrease the numbers of its receptors. 
B)  Type II diabetes is characterized by a downregulation of insulin receptors. 
C)  Upregulation of receptors can occur when the levels of hormone secretion are suppressed. 
D)  The abundance of receptors for a hormone can be under feedback control. 
E)  All of the above are true; none is false. 
A)  Continuous high levels of a hormone can decrease the numbers of its receptors. 
B)  Type II diabetes is characterized by a downregulation of insulin receptors. 
C)  Upregulation of receptors can occur when the levels of hormone secretion are suppressed. 
D)  The abundance of receptors for a hormone can be under feedback control. 
E)  All of the above are true; none is false.

Question 6

Use the following to answer questions:
Match the hormonal function or action specified in each question that follows with the correct hormone from the list below. 
-Steroidal hormone synthesized from cholesterol

Accepted Answer

A)  Insulin 
B)  Glucagon 
C)  Epinephrine 
D)  Somatostatin 
E)   Cortisol 
A)  Insulin 
B)  Glucagon 
C)  Epinephrine 
D)  Somatostatin 
E)   Cortisol

Question 7

Steroid hormones are

Accepted Answer

A)  water-soluble. 
B)  produced by the thyroid gland. 
C)  lipid-soluble. 
D)  derived from the amino acid tyrosine. 
E)  hydrophilic. 
A)  water-soluble. 
B)  produced by the thyroid gland. 
C)  lipid-soluble. 
D)  derived from the amino acid tyrosine. 
E)  hydrophilic.

Question 8

Overproduction or underproduction of _______ in children can cause gigantism or dwarfism.

Accepted Answer

The answer of Overproduction or underproduction of _______ in children...

Question 9

Which of the following contributes to the development of goiter?

Accepted Answer

A)  Inadequate iodine in the diet 
B)  Autoimmune antibodies that stimulate the TSH receptor 
C)  Lack of feedback from circulating T3 and T4 
D)  Overproduction of thyroglobulin 
E)  All of the above 
A)  Inadequate iodine in the diet 
B)  Autoimmune antibodies that stimulate the TSH receptor 
C)  Lack of feedback from circulating T3 and T4 
D)  Overproduction of thyroglobulin 
E)  All of the above

Question 10

The 1972 Nobel Prize in medicine was awarded to Roger Guillemin and Andrew Schally for discoveries relating to

Accepted Answer

A)  the cause of hypopituitary dwarfism. 
B)  hypothalamic releasing factors. 
C)  production of growth hormone using genetically engineered bacteria. 
D)  the cause of acromegaly. 
E)  the discovery of a cure for hypothyroidism. 
A)  the cause of hypopituitary dwarfism. 
B)  hypothalamic releasing factors. 
C)  production of growth hormone using genetically engineered bacteria. 
D)  the cause of acromegaly. 
E)  the discovery of a cure for hypothyroidism.

Question 11

The steroid hormones are synthesized from _______.

Accepted Answer

The answer of The steroid hormones are synthesized from _______....

Question 12

Somatostatin

Accepted Answer

A)  functions as a paracrine hormone. 
B)  slows the digestive activities of the gut. 
C)  inhibits the release of growth hormone in the anterior pituitary. 
D)  All of the above 
E)  None of the above 
A)  functions as a paracrine hormone. 
B)  slows the digestive activities of the gut. 
C)  inhibits the release of growth hormone in the anterior pituitary. 
D)  All of the above 
E)  None of the above

Question 13

The sex hormones secreted by the gonads and, to a small extent, by the adrenal cortex are synthesized from

Accepted Answer

A)  complex carbohydrates. 
B)  amino acids. 
C)  cholesterol. 
D)  hemoglobin. 
E)  nucleic acids. 
A)  complex carbohydrates. 
B)  amino acids. 
C)  cholesterol. 
D)  hemoglobin. 
E)  nucleic acids.

Question 14

Local or circulating hormones are capable of acting on target cells only if target cells are equipped with response components called _______.

Accepted Answer

The answer of Local or circulating hormones are capable of...

Question 15

Hormones can exert their effects even in very low concentrations. For example, testosterone has many dramatic effects, even though its concentration in the blood of adult human males is about 30-100

Accepted Answer

A)  deciliters per liter. 
B)  grams per milliliter. 
C)  grains per ounce. 
D)  millionths of a gram per milliliter. 
E)  billionths of a gram per milliliter. 
A)  deciliters per liter. 
B)  grams per milliliter. 
C)  grains per ounce. 
D)  millionths of a gram per milliliter. 
E)  billionths of a gram per milliliter.

Question 16

Use the following to answer questions:
Match the hormonal function or action specified in each question that follows with the correct hormone from the list below. 
-Released rapidly in response to immediate stress

Accepted Answer

A)  Insulin 
B)  Glucagon 
C)  Epinephrine 
D)  Somatostatin 
E)   Cortisol 
A)  Insulin 
B)  Glucagon 
C)  Epinephrine 
D)  Somatostatin 
E)   Cortisol

Question 17

Prolactin is a hormone that has evolved over time and is expressed in many different vertebrate species. The common function of prolactin in salmon, amphibians, and humans is to

Accepted Answer

A)  trigger mammary gland secretion. 
B)  cause individuals to stop growing once a juvenile reaches adult size. 
C)  aid in reproduction and ensure the continuation of a species. 
D)  stimulate appetite and feeding behaviors. 
E)  trigger puberty. 
A)  trigger mammary gland secretion. 
B)  cause individuals to stop growing once a juvenile reaches adult size. 
C)  aid in reproduction and ensure the continuation of a species. 
D)  stimulate appetite and feeding behaviors. 
E)  trigger puberty.

Question 18

The hormone ecdysone

Accepted Answer

A)  is released from the posterior pituitary. 
B)  stimulates secretion of juvenile hormone. 
C)  keeps an insect in larval stages providing brain hormone is absent. 
D)  stimulates molting and metamorphosis in insects. 
E)  keeps the insect exoskeleton flexible. 
A)  is released from the posterior pituitary. 
B)  stimulates secretion of juvenile hormone. 
C)  keeps an insect in larval stages providing brain hormone is absent. 
D)  stimulates molting and metamorphosis in insects. 
E)  keeps the insect exoskeleton flexible.

Question 19

Which of the following hormones is not produced within the islets of Langerhans of the pancreas?

Accepted Answer

A)  Somatostatin 
B)  Insulin 
C)  Glucagon 
D)  Calcitonin 
E)  Both a and c 
A)  Somatostatin 
B)  Insulin 
C)  Glucagon 
D)  Calcitonin 
E)  Both a and c

Question 20

Which of the following statements about hormones is false?

Accepted Answer

A)  Hormones are secreted by endocrine glands. 
B)  Hormones are analogous to on-off switches. 
C)  Soon after secretion, hormones reach their maximum concentration in the blood. 
D)  Hormones act over a period of time, measured by their half-life. 
E)  Several receptors may mediate actions of a single hormone. 
A)  Hormones are secreted by endocrine glands. 
B)  Hormones are analogous to on-off switches. 
C)  Soon after secretion, hormones reach their maximum concentration in the blood. 
D)  Hormones act over a period of time, measured by their half-life. 
E)  Several receptors may mediate actions of a single hormone.

Exam 41: Animal Hormones

Which of the following is an effect of increased levels of antidiuretic hormone in the blood?

Insect prothoracicotropic hormone (PTTH)

If the circulating levels of calcium are low, _______ stimulates the osteoclasts to break down bone and release it.

The half-life of hormones in the plasma ranges from _______ to _______.

Which of the following statements about regulation of hormone receptors is false?

Use the following to answer questions: Match the hormonal function or action specified in each question that follows with the correct hormone from the list below. -Steroidal hormone synthesized from cholesterol

Steroid hormones are

Overproduction or underproduction of _______ in children can cause gigantism or dwarfism.

Which of the following contributes to the development of goiter?

The 1972 Nobel Prize in medicine was awarded to Roger Guillemin and Andrew Schally for discoveries relating to

The steroid hormones are synthesized from _______.

Somatostatin

The sex hormones secreted by the gonads and, to a small extent, by the adrenal cortex are synthesized from

Local or circulating hormones are capable of acting on target cells only if target cells are equipped with response components called _______.

Hormones can exert their effects even in very low concentrations. For example, testosterone has many dramatic effects, even though its concentration in the blood of adult human males is about 30-100

Use the following to answer questions: Match the hormonal function or action specified in each question that follows with the correct hormone from the list below. -Released rapidly in response to immediate stress

Prolactin is a hormone that has evolved over time and is expressed in many different vertebrate species. The common function of prolactin in salmon, amphibians, and humans is to

The hormone ecdysone

Which of the following hormones is not produced within the islets of Langerhans of the pancreas?

Which of the following statements about hormones is false?

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The half-life of hormones in the plasma ranges from _ to _.