Question: 1. An open circulatory system is distinct by virtue of having a. blood flow into sinuses, not thr…

1. An open circulatory system is distinct by virtue of
having
a. blood flow into sinuses, not through vessels.
b. no heart to pump blood.
c. multiple hearts to move blood more efficiently.
d. several locations that serve the function of lungs.
e. two kinds of oxygen-carrying molecules.
2. _____ is the fluid that bathes the cells in organisms with open
circulatory systems.
a. Blood
b. Plasma
c. Hemolymph
d. Interstitial fluid
e. Hemoglobin
3._____ are blood vessels that carry blood away from the
heart.
a. Arteries
b. Capillaries
c. Veins
d. Venules
e. Ventricles
4. The protein _____ is the primary oxygen carrier in most
animals.
a. hemolymph
b. hemocyanin
c. hemoglobin
d. myoglobin
e. collagen
5. The blood containing the highest oxygen content would be found
in the
a. arterioles.
b. aorta.
c. pulmonary veins.
d. right atrium.
e. pulmonary arteries.
6. The _____ returns blood to the heart from the head.
a. superior vena cava
b. inferior vena cava
c. aorta
d. coronary arteries
e. pulmonary veins
7. The pacemaker of the heart is the _____ which lies just inside
the right atrium.
a. SA node
b. AV node
c. bicuspid valve
d. superior vena cava
e. right ventricle
8. The arteries have a thick layer of _____ which is the source of
the pulse in the wrist of humans.
a. fat
b. capillaries
c. connective tissue
d. smooth muscle
e. valves
9. A special division of the circulatory system, the _____ system,
helps to rapidly harness the energy of digested food.
a. capillary bed
b. coronary
c. hepatic portal
d. hypothalamic portal
e. peristalsis
10. The systolic pressure in the cardiovascular system
represents
a. constant basal pressure on the system.
b. pressure produced by a contracting heart.
c. the lower limit required for survival.
d. the upper limit of safe pressure.
e. total blood volume throughout the system.
11. The _____ is the component of blood minus the cells.
a. plasma
b. lymph
c. thrombin
d. formed element
e. platelet
12. The _____ blood cells are responsible for defending the
body.
a. fibrin
b. platelet
c. red
d. thrombin
e. white
13. Consistently elevated blood pressure is also called
a. congestive heart failure.
b. hypertension.
c. stroke.
d. arrhythmia.
e. angina pectoris.
14. In a __ circulatory system, the circulating fluid, blood, is
always enclosed within the blood vessels that transport blood away
from and back to a pump.
15. Under normal conditions, the amount of fluid filtered out of
the capillaries is greater than the amount that returns to the
capillaries by osmosis. The remainder eventually is captured by an
open circulatory system called the __ system.
16. __, the liquid portion of blood contains metabolites, wastes,
hormones, ions, and a variety of proteins.
17. Less than 1% of the cells in human blood are white blood cells
called, __.
18. Blood is pumped from the heart into the arterial system, which
branches from arteries into fine __.
19. The fish heart is a modified tube with __ chambers arrayed one
after the other.
20. The __ cycle consists of systole and diastole.
21. The spontaneous depolarization of cells in the __ passes
through the left and right atria as a wave to finally cause the
contraction of the heart.
22. __ is fluid formed from blood plasma minus the larger
proteins.
23. A weakened section of an artery is known as a(n) __.
24. The __is the amount of blood pumped by the heart each
minute.
25. __ are subcellular packets of clotting enzymes.
26. __ are basically packets of hemoglobin.
27. A normal value for blood pressure should be about __.
28. Veins contain __ that assist in the movement of blood back to
the heart.
29. The __ delays the contraction of the ventricles to allow them
to fill with blood.
30. During the cardiac cycle, contraction is called __ and
relaxation is called __.
31. The __ is the tough sac of connective tissue around the
heart.
32. __ results when the blood’s ability to carry oxygen is
decreased.