Exam 20: The Cardiovascular System: Blood

Describe the function of the fetal shunts from the pulmonary circuit.

Functionally, there are no valves in arteries (as opposed to in veins) because

The cerebral arterial circle forms a loop around which structures?

What vessel in the fetus connects the pulmonary trunk to the aortic arch so that most of the blood bypasses the immature lungs?

Most small molecules pass through a capillary wall through which route?

Which of the following is not a branch of the celiac trunk?

The middle and posterior cerebral arteries are connected by the posterior communicating arteries.

Fenestrated capillaries

Describe how blood flow is regulated (a) to whole organs, (b) within tissues, and (c) to capillary beds.

Which layer of blood vessels contains smooth muscle tissue?

In a capillary bed, blood enters by a terminal arteriole, continues through a metarteriole, and exits to a venule by means of a(n) .

The foramen ovale in the heart normally closes

The main arteries of the sole of the foot-the medial and lateral plantar arteries-arise behind the ankle from which artery?

Most systemic venous blood is both oxygen-poor and nutrient-poor. However, systemic venous blood that is not oxygen-poor and is nutrient-rich occurs in

Cirrhosis of the liver causes backup of blood in the sinusoids, resulting in a condition known as hypertension.

The saphenous vein is not paired with an artery with the same name.

The pulse of the facial artery is palpated

Veins have less elastin in their walls than do arteries.

Which artery arises from the inferior part of the abdominal aorta and supplies the distal half of the large intestine?

The internal iliac arteries supply blood both to the pelvic organs and to the lower limbs.