A monocytes b polymorphonuclear leukocytes c

A) monocytes.
B) polymorphonuclear leukocytes.
C) lymphocytes.
D) neutrophils.
E) basophils.
36. Which of these cells is far larger than all the others?
37. In hemostasis, thrompoplastin
38. When a clot is no longer needed, it is dissolved by

39. The coronary arteries arise from
A) the proximal end of the aorta.
B) the interventricular arteries.
C) the myocardium.
D) the coronary sulcus.
E) the venae cavae.
40. If the chordea tendinease of an animal's heart were cut the most likely effect would be
41. Blood normally leaves the right ventricle through
42. A heart rate of 45 bpm and an absence of P waves from electrocardiogram would suggest
43. The amount of blood (mL) coming from one ventricle in one heartbeat is called
A) the ejection fraction.
B) the preload.
C) the afterload.
D) the stroke volume.
E) the cardiac output.
44. Atrial systole begins
45. Diastasis is a period of

46. The cardiac center, which modifies the heart rate is located in
47. The cardioinhibitory center communicates with the heart by way of
A) the internodal pathways.
B) the bundle of His.
C) Purkinje fibers.
D) the vagus nerves.
E) sympathetic nerves.
48. At the end of ventricular contraction the amount of blood remaining in the ventricle is
49. The heart normal ___54% can rise to as high as 90% during strenuous exercise