Exam 19: The Cardiovascular System: Blood Vessels

Arteries supplying the same territory are often merged with one another, forming arterial anastomoses.

The pulmonary circulation does not directly serve the metabolic needs of body tissues.

A patient lost a lot of blood during surgery and his blood pressure dropped from 120/80 to 90/50. Describe how the kidneys respond to this change in blood pressure.

The in the carotid sinuses and aortic arch detect increases in blood pressure.

Figure 19.1Using Figure 19.1, match the following: -Capillary found in endocrine organs that allows hormones to gain rapid entry into the blood.

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

For each of the following situations, describe the anticipated effect on blood pressure and the physiological basis of the response: (1) a high- salt diet, (2) a blow on the head that damages (disables) the vasomotor center, (3) an attack by a mugger, and (4) a hypothalamic tumor resulting in excess ADH production.

The term ductus venosus refers to .

Which of the following chemicals does not help regulate blood pressure?

Which of the following is not one of the three main factors influencing blood pressure?

Figure 19.2Using Figure 19.2, match the following: -The most common form of shock is .

Figure 19.1Using Figure 19.1, match the following: -Arterial provide alternate pathways for blood to get to an organ.

The azygos vein originates in the abdomen.

Select the correct statement about blood flow.

Which of the following is the most significant source of blood flow resistance?

Figure 19.2Using Figure 19.2, match the following: -The veins drain the gall bladder.

Osmotic pressure is created by the presence in a fluid of small diffusible molecules that easily move through the capillary membrane.

Figure 19.1Using Figure 19.1, match the following: -The mesenteric arteries branch off the abdominal aorta, but the mesenteric veins do not connect directly to the vena cava. Why?

Figure 19.2Using Figure 19.2, match the following: -Hepatic portal vein.

Figure 19.1Using Figure 19.1, match the following: -Consider the diameter of one 4- mm blood vessel and two 2- mm blood vessels. Would the two 2- mm vessels carry more, less, or the same amount of fluid, given that pressure is a constant? Why?