Chapter 21 (I): Blood Vessels

How many pulmonary veins are there?

4

What is the correct order for the sequence of blood vessels that blood would travel in the systemic circuit, starting at the aorta? 1. venules 2. arterioles 3. capillaries 4. elastic arteries 5. medium veins 6. large veins 7. muscular arteries

4, 7, 2, 3, 1, 5, 6

Blood traveling through the subclavian artery would travel through which vessel next?

Axillary artery

Which of the following are the smallest/thinnest type of blood vessel?

Capillaries

Compared to arteries, veins

Have no elastic laminae

common hepatic artery supplies to

Liver, stomach, gallbladder, and duodenum (small intestine)

External iliac artery supplies to

Lower limbs

______________________ allow free exchange of water and plasma proteins between the blood and interstitial fluid.

Sinusoids

Inferior mesenteric artery supplies to the

Terminal portions of the colon and rectum

The direct interconnection of two arteries is called an arterial

anastomosis

Systemic arteries branch from the

aorta

Which kind of vessel is also called a resistance vessel?

arteriole

The smallest arterial branches are called the

arterioles.

A(n) ________ is a direct connection between an arteriole and a venule.

arteriovenous anastomosis

renal artery

blood vessel that carries blood to the kidney

What structure do RBCs move through single-file?

capillary

Venous valves are responsible for

channeling blood toward the heart.

Capillaries that have a complete lining are called

continuous capillaries.

Most tissues in the body are supplied by

continuous capillaries.

The pulmonary trunk carries __________ blood __________ the lung.

deoxygenated; to

During vasoconstriction the

diameter of a vessel's lumen decreases.

Which of these arteries does NOT originate on the abdominal aorta?

femoral

Capillaries with a perforated lining are called

fenestrated capillaries.

Compared to arteries, veins

have thinner walls.

Blood moves forward through veins because of all of the following except

pumping by the smooth muscle in the wall of the vein.

Venoconstriction ________ the amount of blood within the venous system, which ________ the volume in the arterial and capillary systems.

reduces; increases

Which of these arteries does NOT branch directly off of the aortic arch?

right subclavian artery

Resistance is opposition

to blood flow.

Internal carotid artery supplies

to the brain

What are the layers of blood vessels from outside to inside?

tunica externa; tunica media; tunica interna

The brachial artery branches to form the radial and ________ arteries.

ulnar

The ________ are small blood vessels that nourish tissue components in the wall of large arteries and veins.

vasa vasorum

Venae cavae are the largest of what type of vessel?

vein

Which part of the vascular system functions as a blood reservoir and contains over 60% of the body's blood?

veins

The large vessels that return blood to the heart are called

veins.

Which type of blood vessel has (a) the largest lumen and (b) the thickest tunica media? (Figure 21-2)

veins; arteries

Which layer in the wall of a vein is composed of connective tissue?

Tunica externa

Smooth muscle in the wall of an artery is found in the

Tunica media

____________________ are small vessels that supply blood to the tissues (endothelium, smooth muscle, etc.) in the wall of a blood vessel.

Vasa vasorum

The large vessels that return blood to the heart are called

Veins

After blood leaves the capillaries, it first enters a

Venule

The brachial and femoral arteries are examples of which type of artery?

muscular

The pulmonary veins carry ________ blood to the ________.

oxygenated; left atrium

Veins contain valves to

prevent back flow of blood