19. The Blood Vessels

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

Veins have smaller lumens, more elastic fibers, and more smooth muscle than arteries.

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

Arteries always carry oxygenated blood away from the heart, and veins always carry deoxygenated blood toward the heart.

The vein that drains the dural sinuses of the brain is the 

(a) Cephalic vein

(b) Great saphenous vein

(c) Internal jugular vein

(d) Superior vena cava

The vein that collects most of the venous blood inferior to the diaphragm is the 

(a) Superior vena cava

(b) Great saphenous vein

(c) Inferior vena cava

(d) Azygos vein

Which of the following can lead to decreased venous return of blood to the heart?

a. An increase in blood volume

b. An increase in venous pressure

c. Damage to the venous valves

d. Increased muscular activity

Trace one drop of blood from the time it enters the right atrium until it enters the left atrium. What is this circuit called?

How is blood pressure maintained in veins to counter the force of gravity?

More than one choice may apply.

Pulmonary veins deliver freshly oxygenated blood from the lungs to the

a. right ventricle

b. left ventricle

c. right atrium

d. left atrium

Which of the following is not a reason that veins need valves to prevent backflow, but arteries do not?

Which statement does not accurately describe veins?

a. Have less elastic tissue and smooth muscle than arteries.

b. Contain more fibrous tissue than arteries.

c. Most veins in the extremities have valves.

d. Always carry oxygen-poor blood.

Name three factors that are important in promoting venous return.

Match the following veins with the correct description. 

__Cephalic vein      

__Great saphenous vein      

__Dural sinus      

__Azygos vein      

__Hepatic portal vein      

__Splenic vein      

__Internal jugular vein      

__Brachiocephalic veins       

__Brachial vein      

__Inferior mesenteric vein

a. Drains the posterior abdominal and thoracic walls

b. Two veins merge to form the superior vena cava

c. Receives blood from the spleen and digestive organs

d. Superficial vein in the medial leg

e. Drains the brain and face

f. Drains part of the large intestine

g. Superficial vein in the lateral upper limb

h. Deep vein of the arm

i. Drains the spleen

j. Drain the brain capillaries and cerebrospinal fluid

Match the following terms with the correct definition.

____ Auricle      

____ Aorta      

____ Coronary sinus       

____ Papillary muscle      

____ Fossa ovalis     

____ Pectinate muscle      

____ Venae cavae      

____ Pulmonary trunk      

____ Chordae tendineae      

____ Pulmonary veins 

a. Drainage point for the coronary veins

b. Extensions that attach papillary muscles to valves

c. Remnant of a hole present in the fetal interatrial septum

d. Two largest veins of the systemic circuit

e. Flaplike extension from the right or left atrium

f. Finger-like projections of ventricular muscle

g. Main artery of the pulmonary circuit

h. Veins that drain the pulmonary circuit

i. Largest artery of the systemic circuit

j. Ridges of muscle in the atria