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Anatomy and Physiology Quiz 1

1. What can low levels of blood urea nitrogen indicate?

A.Too much exercise

B.Low-protein diet

C.Dehydration

D.All of the above

2. 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

3. 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

4. What is the main function of the nervous system?

A.To coordinate the activities of different parts of the body

B.To send signals from sensory nerves to the brain.

C.To send signals from the brain to various parts of the body.

D.None of the above.

5. Which of these are symptoms of lymphoma?

A.Weight Loss

B.Night Sweats

C.Itching

D.All of the Above

6. Which of these is a function of the respiratory system?

A.Warm and humidify air

B.Immunity

C.Phonation

D.All of the Above

7. When scientists compared the pineal glands of two birds, one nocturnal and the other diurnal, they noticed that the pineal gland of the nocturnal bird was smaller and less connected. Which hypothesis below supports this finding?

A.This is random, and there is no conclusion that can be drawn.

B.The pineal may be smaller because releasing melatonin would be maladaptive for nocturnal species.

C.The diurnal bird needs sleep, while the nocturnal bird does not

D.None of the Above

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