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Biology Dictionary

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Anatomy and Physiology Quiz 1

1. In which of the following way does Aldosterone perform its roles in the human body?

A.It acts directly on water channels to stimulate water retention

B.It works via calcium ions that increase water absorption

C.It acts on salt by increasing the number of sodium channels in our nephrons to facilitate water retention

D.It acts on salt by decreasing the number of sodium channels in our nephrons to facilitate water retention

2. How will darkness affect melatonin secretion? Choose the best answer.

A.Increase

B.Decrease

C.No effect

D.None of the above

3. When thyroid hormone levels are low, the pituitary gland will release ______ TSH?

A.Less

B.More

C.No change

D.Tapered

4. Which of these statements is true?

A.Pulmonary circulation relates to the flow of blood between the heart and lungs

B.The aorta is one of the major veins delivering blood to the heart

C.All vertebrates have a four-chambered heart

D.All of the above

5. If your pituitary gland was removed, what would happen to CRH production in the Hypothalamus? (Look at the graphic of the relationship between the pituitary and hypothalamus for help.)

A.Nothing will change in the hypothalamus

B.The hypothalamus will overproduce CRH, with no response

C.The hypothalamus will underproduce CRH

D.None of the above.

6. Which of these statements about T-cell maturation is true?

A.Positive selection allows T-cells that can recognize specific pathogenic antigens to proliferate

B.Negative selection allows T-cells that do not recognize self-antigens to proliferate

C.T-cell maturation occurs in the thymus

D.All of the Above

7. Why do the lymph nodes typically swell up when a person gets sick?

A.They do not swell up

B.The swelling is caused by excess lymph fluid