Question

After suffering an asthma attack (without having her inhaler), Sally's breathing is impaired and respiratory acidosis occurs. How will her body compensate for this imbalance?

Select one:

A. Kidneys retain bicarbonate ions.

B. Kidneys eliminate bicarbonate ions.

C. Kidneys retain hydrogen ions.

D. Kidneys eliminate carbon dioxide.

Which of the following would shift the oxygen-hemoglobin saturation curve to the right? Select all that apply.

Select one or more:

A. Decreased hydrogen ion concentration

B. Increased partial pressure of carbon dioxide

C. Decreased pH

D. Increased body temperature

The sight, smell, or thought of food can stimulate gastric secretion. Which of the following is NOT true?

Select one:

A. This stimulates release of the hormone gastrin.

B. This is an example of a long reflexive pathway.

C. The cerebral cortex, hypothalamus and medulla oblongata are all involved.

D. This is an example of parasympathetic stimulation by the autonomic nervous system.

If an adult man sustained an injury to the anterior pituitary resulting in decreased secretion of luteinizing hormone (LH), one would expect that he would have ________.

Select one:

A. excessive beard growth

B. decreased testosterone secretion

C. shrinkage of the anterior pituitary gland

D. increased spermatogenesis

The c litoris and the p enis both become engorged with blood due to parasympathetic stimulation upon sexual stimulation.

Select one:

True

False

Rank of the following methods of carbon dioxide transport in the blood from most to least important:

1: Bound to hemoglobin in the form of carbaminohemoglobin
2: As bicarbonate ions in the plasma
3: Dissolved as carbon dioxide in the plasma

Select one:

A. 1, 2, 3

B. 2, 1, 3

C. 3, 2, 1

D. 2, 3, 1

E. 1, 3, 2

F. 3, 1, 2

Answer 1

Answer;

1. A) A. Kidneys retain bicarbonate ions.

Explanation: Kidney excrete H+ and retains HCO- in response to acidosis

2. B. Increased partial pressure of carbon dioxide

C. Decreased pH

D. Increased body temperature

3. A. This stimulates release of the hormone gastrin.

Explanation: Gastrin release is also stimulated by the stretching of the stomach walls during a meal, the presence of certain foods within the stomach cavity and an increase in the pH levels of the stomach

4. True

5. D. 2, 3, 1

Explanation: 1) Carbon dioxide is more soluble in blood than oxygen. About 5 to 7 percent of all carbon dioxide is dissolved in the plasma.
The majority of carbon dioxide molecules near about 85% are carried as part of the bicarbonate buffer system. In this system, carbon dioxide diffuses into the red blood cells. Carbonic anhydrase (CA) within the red blood cells quickly converts the carbon dioxide into carbonic acid (H2CO3). Carbonic acid is an unstable intermediate molecule that immediately dissociates into bicarbonate ions
and hydrogen (H+) ions.
When the blood reaches the lungs, The H+ ion binds to the bicarbonate ion. This produces the carbonic acid intermediate, which is converted back into carbon dioxide through the enzymatic action of CA. The carbon dioxide produced is expelled through the lungs during exhalation