Your symptoms of hypotension, bronchial contraction, and mucus secretion to the

Question

Your symptoms of hypotension, bronchial contraction, and mucus secretion to the pollen in the air would be mediated responses of:

macrophages

immunoglobulin E, eosinophils and macrophages

immunoglobulin E

eosinophils

immunoglobulin E and eosinophils

2.

Which would not attribute to an autoimmune disease?

Prolonged treatment with anti-inflammatory drugs

Alterations of normal self-antigens

A decrease in T-cell activity

All the choices are correct

3.

Verapamil is an L-type calcium channel blocker used to treat arrhythmias and high blood pressure. How does verapamil affect cardiac output?

Decreases cardiac output by decreasing stroke volume

Decreases cardiac output by increasing heart rate

Increases cardiac output by increasing heart rate

Increases cardiac output by increasing stroke volume

Two of the choices are correct

4.

Earlier in January, you had a round of the stomach flu and had symptoms for 4 days. Last month, your entire dorm was infected with the stomach flu, with symptoms for 5 days. Luckily, you were spared because:

None of the choices are correct

Your plasma antibodies have attacked different epitopes of the second round of infections

Two of the choices are correct

Your plasma antibodies from memory B cells from the first infection have attacked the antigens during the second round of infection

Your plasma antigens have different epitopes from the two rounds of the infection

5.

For skeletal muscle, which of the following statements is false?

Thin filaments can slide in a maximum distance and generate the most tension when the muscle is maximally stretched out

When the initial length of muscle prior to contraction becomes very short, tension is decreased during contraction

Two of the choices are correct

During the contraction phase, the muscle is generating tension due to calcium release from the sarcoplasmic reticulum

At a relaxed length of muscle, it is at its optimal length

6.

You are exercising at sea level and there is plenty of oxygen in the air. What would be the primary source of ATP for the contractile activity of your skeletal muscles?

Glycolysis

Oxidative phosphorylation

Two of the choices are correct.

Lactic acid fermentation

Creatine phosphate

Explanation / Answer

1. Ig E and Eosinophill

2. Prolonged treatment with anti inflammatory agent

3. Decrease cardiac output by decrease in stroke volume

4. Your plasma antibody from memory B cell from first infection have attacked antigen during second attack

5. Thin filament can slide more .....

6. Teo of the choices are correct

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