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
