Reference no: EM133581547

Questions

1. Small changes in ______ result in large changes in resistance.

1) radius

2) viscosity

3) length

4) pressure

2. When the ventricle relax, pressure:

1) decreases and gases/liquids exit

2) decreases and gases/liquids enter

3) increases and gases/liquids enter

4) increases and gases/liquids exit

3. Gases move:

1) down concentration gradients

2) from areas of lower concentration to areas of lower concentration

3) against pressure gradients

4) from where gases have higher pressure to areas where gases have lower pressure

4. If a chamber decreases in size, pressure:

1) decreases and gases/liquids exit

2) increases and gases/liquids enter

3) decreases and gases/liquids enter

4) increases and gases/liquids exit

5. A patient exercises and becomes dehydrated. What happens to resistance and flow?

1) decrease resistance and increase flow

2) increase resistance and decrease flow

3) decrease resistance and flow

4) increase resistance and flow

6. The diffusion of which ion prevents tetanus?

1) chloride

2) sodium

3) potassium

4) calcium

7. Which action potential prevents summation?

1) neuronal

2) skeletal

3) cardiac contractile

4) cardiac autorhythmic

8. Which of the following is a similarity between cardiac contractile and neuronal action potentials? Both rapidly:

1) repolarize with calicum entering and potassium exiting the cells

2) repolarize with potassium entering the cells

3) depolarize with sodium entering the cells

4) depolarize with calcium entering the cells

9. Sympathetic stimulation:

1) increases potassium exit from cells

2) stimulates beta one receptors

3) results in acetylcholine secretion

4) increases ion exiting cells through funny channels

10. MARK ALL THAT APPLY. Calcium is involved in depolarization in which of the following action potentials?

1) neuronal

2) cardiac contractile

3) cardiac autorhythmic