16. The Endocrine System

Introduction to the Endocrine System

Open Question
Roger has been extremely thirsty. He drinks numerous glasses of water every day and urinates a great deal. Name two disorders that could produce these signs and symptoms. What test could a clinician perform to determine which disorder Roger has?
7
views
Open Question
Pamela and her teammates are considering taking anabolic steroids (synthetic hormones derived from testosterone) to enhance their competitive skills. What natural effects of testosterone are they hoping to gain? What additional side effects might these women expect should they begin an anabolic steroid regime?
7
views
Open Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

a. The cells of the nervous system communicate via action potentials, whereas the cells of the endocrine system communicate via hormones.
7
views
Open Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

d. Steroid hormones are hydrophilic molecules that bind to plasma membrane proteins as part of a second-messenger system.
7
views
Open Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

e. The secretion of most hormones is regulated by a negative feedback system.
7
views
Open Question
Which of the following is not a potential effect that a hormone could have on its target cell?

a. Activating genes in the DNA
b. Stimulating cellular division
c. Altering the permeability of the plasma membrane
d. All of the above are potential effects of a hormone on its target cell.
7
views
Open Question
How does ADH affect the amount of water in the body, and how does it accomplish this? How does this affect the osmolarity of the blood?
7
views
Open Question
List the target tissues and effects of the following anterior pituitary gland hormones.

a. Thyroid-stimulating hormone
b. Adrenocorticotropic hormone
c. Prolactin
d. Gonadotropins
e. Growth hormone
7
views
Open Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

a. About 90% of the thyroid hormone produced is triiodothyronine (T3).
7
views
Open Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

b. Thyroxine (T4) is the more active of the two thyroid hormone
7
views
Open Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

d. Iodine atoms are a key component of parathyroid hormone.
7
views
Open Question
Fill in the blanks: A rise in free T3 and T4 would be expected to produce a(n)______ in TRH and TSH secretion. A decrease in free T3 and T4 would be expected to produce a(n)_____in TRH and TSH secretion.
7
views
Open Question
Which of the following statements correctly describes the role of parathyroid hormone?

a. Parathyroid hormone regulates the metabolic rate.
b. Parathyroid hormone increases the blood calcium ion concentration.
c. Parathyroid hormone decreases the blood sodium ion concentration.
d. Parathyroid hormone causes water retention by the kidneys.
7
views
Open Question
Which of the following is not an effect of aldosterone?

a. Increased excretion of hydrogen ions from the fluid in the kidneys
b. Increased retention of sodium ions from the fluid in the kidneys
c. Increased retention of potassium ions from the fluid in the kidneys
d. Increased retention of water from the fluid in the kidneys
7
views
Open Question
Cortisol is:

a. a potent inhibitor of the inflammatory response.
b. an important part of the stress response.
c. Both a and b are correct.
d. Neither a nor b is correct.
7
views