Exam 19: The Cardiovascular System: Blood Vessels

If a person were to have substantial blood loss, you would expect to see all of the following physiological events to happen EXCEPT one. Select the least likely response to substantial blood loss.

Where in the body would you find low oxygen levels causing vasoconstriction and high levels causing vasodilation?

Brain blood flow autoregulation__________ .

Factors that aid venous return include all EXCEPT__________ .

Select the correct statement about blood flow.

A thrombus (blood clot) in the first branch of the arch of the aorta would affect the flow of blood to the__________ .

Which of the following is most likely to occur in the arteriovenous shuts present in the blood vessels of the finger tips and toes?

The carotid sinus reflex protects the blood supply to the brain, whereas the aortic reflex is more concerned with maintaining adequate blood pressure in the systemic circuit as a whole.

At the battle of Shiloh in the American Civil War, Confederate General A. S. Johnston was killed when he was shot in the thigh. Witnesses reported that he bled to death almost before he realized that he was wounded. Which blood vessel was most likely to have been injured? Why is a tourniquet usually ineffective in stopping the bleeding from this wound?

Which type of blood vessels contain valves and what is their function?

Blood flow is__________ proportional to the difference in blood pressure. Blood flow is__________ proportional to the total peripheral resistance.

Due to the branching of arteries the type of arteries that would be most numerous would be __________.

Histologically, the __________is squamous epithelium supported by a sparse connective tissue layer.

Which of the choices below explains why the arterioles are known as resistance vessels?

A woman in her early 50s appeared at a walk-in clinic, complaining of aching pain in her right leg following a fall. Visual examination revealed that the medial aspect of that leg was red and swollen. A diagnosis of phlebitis was made. What is phlebitis, and what more serious condition may result if proper healing does not occur?

Which of the following processes provides a long-term response to changes in blood pressure?

The velocity of blood is slowest in the capillaries and pressure of blood is lowest in the veins. Which of the following is NOT an accurate description of the benefits of slow, low pressure blood in the capillary beds?

Mechanisms that do NOT help regulate blood pressure include__________ .

Which of the following is NOT true regarding fenestrated capillaries?

The release of which hormone is most likely to cause a reduction in blood volume and pressure?