Question 1

Nonsteroid hormones cannot cross the plasma membrane of cells, yet still have the ability to influence cell activity. Explain how this is possible.

Accepted Answer

For most nonsteroid hormones, binding to

Question 2

Nitric oxide helps regulate blood flow in many tissues and is involved in the development and control of penile erection.

Accepted Answer

A) True 
 B)False

Question 3

All of following statements are TRUE regarding estrogen and progesterone, EXCEPT which one?

Accepted Answer

A)  They are produced and secreted by the ovaries in response to hormones from the anterior pituitary gland. 
B)  They are released during a female's reproductive years. 
C)  They are peptide hormones that activate target cells through the cyclic AMP second messenger mechanism. 
D)  They regulate the menstrual cycle. 
E)  They stimulate development of female secondary sex characteristics. 
A)  They are produced and secreted by the ovaries in response to hormones from the anterior pituitary gland. 
B)  They are released during a female's reproductive years. 
C)  They are peptide hormones that activate target cells through the cyclic AMP second messenger mechanism. 
D)  They regulate the menstrual cycle. 
E)  They stimulate development of female secondary sex characteristics.

Question 4

Using the figure above, identify each endocrine gland (A-G).
-pancreas

Accepted Answer

The answer of   Using the figure above, identify...

Question 5

Somatostatin functions to inhibit both insulin and glucagon.

Accepted Answer

A) True 
 B)False

Question 6

Calcitonin and PTH have opposing effects on blood calcium levels.

Accepted Answer

A) True 
 B)False

Question 7

The levels of potassium and sodium in the body are regulated primarily by the hormone aldosterone.

Accepted Answer

A) True 
 B)False

Question 8

Match each event labeled on the graph with the description of what is occurring in relation to blood glucose levels.  
-peak glucose levels in plasma

Accepted Answer

The answer of Match each event labeled on the graph...

Question 9

Using the figure above, identify each endocrine gland (A-G).
-thyroid gland

Accepted Answer

The answer of   Using the figure above, identify...

Question 10

Match each of the following hormones to its target organ.
-ADH

Accepted Answer

A) ovary, testis 
B) breasts 
C) adrenal cortex 
D) anterior pituitary 
E) stomach
F)thyroid
G)kidney
H)muscles and bones 
A) ovary, testis 
B) breasts 
C) adrenal cortex 
D) anterior pituitary 
E) stomach
F)thyroid
G)kidney
H)muscles and bones

Question 11

The responsiveness of cells to calcitonin increases as an individual ages; maximum responsiveness occurs in elderly individuals as a mechanism to improve the stability and strength of bones.

Accepted Answer

A) True 
 B)False

Question 12

Insulin helps regulate blood sugar levels by stimulating the release of glucose from glycogen stores.

Accepted Answer

A) True 
 B)False

Question 13

Which one of the following nonhormonal chemical messengers is important in local control of blood flow and blood clotting?

Accepted Answer

A)  prostaglandins 
B)  nerve growth factor 
C)  tumor angiogenesis growth factor 
D)  histamine 
E)  epidermal growth factor 
A)  prostaglandins 
B)  nerve growth factor 
C)  tumor angiogenesis growth factor 
D)  histamine 
E)  epidermal growth factor

Question 14

Every hormone in the human body needs to interact with an appropriate receptor on the target cell's membrane before it can cause a response.

Accepted Answer

A) True 
 B)False

Question 15

Which one of the following is caused by the secretion of atrial natriuretic hormone by the heart?

Accepted Answer

A)  decrease in blood pressure 
B)  decrease in blood calcium level 
C)  decrease in kidney function 
D)  increase of blood sugar level 
E)  increased production of fats and proteins 
A)  decrease in blood pressure 
B)  decrease in blood calcium level 
C)  decrease in kidney function 
D)  increase of blood sugar level 
E)  increased production of fats and proteins

Question 16

When oxytocin is released during childbirth, the hormone targets cells in the

Accepted Answer

A)  kidneys. 
B)  breasts. 
C)  hypothalamus. 
D)  uterus. 
E)  breasts and uterus. 
A)  kidneys. 
B)  breasts. 
C)  hypothalamus. 
D)  uterus. 
E)  breasts and uterus.

Question 17

Match each of the following hormones to its function.
-causes ejection of milk into ducts during breast-feeding

Accepted Answer

A) insulin 
B) LH 
C) oxytocin 
D) calcitonin 
E) ACTH
F)aldosterone 
A) insulin 
B) LH 
C) oxytocin 
D) calcitonin 
E) ACTH
F)aldosterone

Question 18

A goiter results from low dietary iodine levels

Accepted Answer

A)  because the hypothalamus cannot be inhibited without iodine. 
B)  because ADH levels rise controllably. 
C)  due to the activity of the anterior pituitary gland. 
D)  as glucagon levels elevate. 
E)  because thyroxine cannot be made, which results in high levels of TSH. 
A)  because the hypothalamus cannot be inhibited without iodine. 
B)  because ADH levels rise controllably. 
C)  due to the activity of the anterior pituitary gland. 
D)  as glucagon levels elevate. 
E)  because thyroxine cannot be made, which results in high levels of TSH.

Question 19

Match each of the following hormones to its target organ.
-gastrin

Accepted Answer

A) ovary, testis 
B) breasts 
C) adrenal cortex 
D) anterior pituitary 
E) stomach
F)thyroid
G)kidney
H)muscles and bones 
A) ovary, testis 
B) breasts 
C) adrenal cortex 
D) anterior pituitary 
E) stomach
F)thyroid
G)kidney
H)muscles and bones

Question 20

The effect of parathyroid hormone is to ________ blood calcium levels.

Accepted Answer

The answer of The effect of parathyroid hormone is to...

Exam 13: The Endocrine System

Nonsteroid hormones cannot cross the plasma membrane of cells, yet still have the ability to influence cell activity. Explain how this is possible.

Nitric oxide helps regulate blood flow in many tissues and is involved in the development and control of penile erection.

All of following statements are TRUE regarding estrogen and progesterone, EXCEPT which one?

Using the figure above, identify each endocrine gland (A-G). -pancreas

Somatostatin functions to inhibit both insulin and glucagon.

Calcitonin and PTH have opposing effects on blood calcium levels.

The levels of potassium and sodium in the body are regulated primarily by the hormone aldosterone.

Match each event labeled on the graph with the description of what is occurring in relation to blood glucose levels. -peak glucose levels in plasma

Using the figure above, identify each endocrine gland (A-G). -thyroid gland

Match each of the following hormones to its target organ. -ADH

The responsiveness of cells to calcitonin increases as an individual ages; maximum responsiveness occurs in elderly individuals as a mechanism to improve the stability and strength of bones.

Insulin helps regulate blood sugar levels by stimulating the release of glucose from glycogen stores.

Which one of the following nonhormonal chemical messengers is important in local control of blood flow and blood clotting?

Every hormone in the human body needs to interact with an appropriate receptor on the target cell's membrane before it can cause a response.

Which one of the following is caused by the secretion of atrial natriuretic hormone by the heart?

When oxytocin is released during childbirth, the hormone targets cells in the

Match each of the following hormones to its function. -causes ejection of milk into ducts during breast-feeding

A goiter results from low dietary iodine levels

Match each of the following hormones to its target organ. -gastrin

The effect of parathyroid hormone is to ________ blood calcium levels.

Human Biology, Science, and Society

The Chemistry of Living Things

Structure and Function of Cells

From Cells to Organ Systems

The Skeletal System

The Muscular System

Blood

Heart and Blood Vessels

The Immune System and Mechanisms of Defense

The Respiratory System: Exchange of Gases

The Nervous System: Integration and Control

Sensory Mechanisms

The Digestive System and Nutrition

The Urinary System

Reproductive Systems

Cell Reproduction and Differentiation

Cancer: Uncontrolled Cell Division and Differentiation

Genetics and Inheritance

DNA Technology and Genetic Engineering

Development and Aging

Evolution and the Origins of Life

Ecosystems and Populations

Human Impacts, Biodiversity, and Environmental Issues

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