Bio005 Chapter 14 Review Questions

Cardiovascular changes resulting from moderate exercise include ________.

increased cardiac output

Increased blood flow resistance is caused by ________.

increased blood vessel length

Blood flow is increased by ________.

vasodilation

The steroid hormone secreted by the adrenal cortex, which stimulates salt reabsorption in the kidneys is ________.

aldosterone

Net filtration would be decreased by ________.

hypotension

A failure of blood pressure to increase upon standing is known as ________.

postural hypotension

Hydrostatic pressure is ________ and colloid osmotic pressure is ________ at the arterial end of a capillary.

higher; lower

Which is NOT a symptom of preeclampsia?

a) Hypertension

B) Proteinuria

C) Edema

 d) Increased vasodilation

Increased vasodilation

According to the Frank-Starling Law of the heart, as contraction strength increases the stroke volume ________.

increases

Angiotensin I is formed from the plasma protein ________ by the action of the enzyme ________.

angiotensinogen; renin

Which of the following is NOT a mechanism by which angiotensin II raises blood pressure?

a) Stimulating the thirst center in the hypothalamus

B) Stimulating production of aldosterone

c) Causing vasodilation in arterioles

d) Increasing peripheral resistance

 

Causing vasodilation in arterioles

A decrease in total peripheral resistance would cause blood flow to ________.

increase

Hypertension can be treated by all of the following EXCEPT ________.

sympathetic agonists

Increased blood flow resistance is caused by ________.

increased blood vessel length

Sympathetic stimulation of cholinergic fibers in the arterioles of skeletal muscle will produce ________.

vasodilation

Sympathetic stimulation of the heart will ________.

A) increase the rate of depolarization in the ventricles

B) increase conduction rate between the SA and AV nodes

C) increase the strength of myocardial contraction

D) All of the choices are correct.

 

All of the choices are correct.

The ________ is equal to the hydrostatic pressure of the blood in the capillaries minus the hydrostatic pressure of tissue interstitial fluid outside the capillaries.

net filtration pressure

In response to increased ventricular filling, ________.

myocardial cells stretch

The opposing forces that affect fluid movements across a capillary are known as ________

starling forces

A person with a decreased blood pressure, rapid pulse, and cold clammy skin would be suffering from ________.

hypovolemic shock