32. The simplest type of nervous response is A. effector action. B. a stimulus. C. reflex. ____ 33. A heart block is the interruption of the AV node message from the SA node. This is a rhythm or conduction defect. A. True B. False ____ 34. White blood cells are A. erythrocytes. B. thrombocytes. C. leukocytes.

84)Formation of erythrocytes occurs in the _______. Group of answer choices Red bone marrow Yellow bone marrow Plasma White bone marrow 85) The circulatory system has only 1 circuit that circulates blood. Group of answer choices False True 86) In the homeostatic regulation of blood oxygen levels, the effector is the ________. Group of answer choices Kidney CO2 Red Bone Marrow Blood Oxygen Levels Lungs 87) For each heart chamber the period of contraction  is called ___________________. Group of answer choices Diastole Systole

35. The only veins that carry oxygenated blood to the heart are the A. vena cavas. B. pulmonary veins. C. coronary veins. ____ 36. Gamma globulin helps synthesis of antibodies in blood plasma. A. True B. False ____ 37. Soft, noncancerous growths in the lining of the nasal passages and sinuses are A. rhinitis. B. nasal polyps. C. deviated septums.

38. All blood cells are produced in the A. red bone marrow. B. yellow bone marrow. C. white bone marrow. ____ 39. The heart muscle itself receives its blood supply from the A. coronary artery. B. aorta. C. inferior vena cava. ____ 40. The parasympathetic and sympathetic nervous systems A. work identically on different areas of the body. B. may be antagonistic in their actions. C. are always subject to conscious control.

An x-ray of a person with low back pain shows a distention of the largest blood vessel in the thoracolumbar area. This person probably has a/an __________.  Group of answer choices a. thoracic aortic aneurysm b. dissecting aneurysm c. cerebral aneurysm d. deep vein thrombosis e. abdominal aortic aneurysm

A mismatch of blood types during a transfusion is dangerous because _________. a.clotting factors in the donor's blood will cause unwanted clots known as thrombus b.antibodies in the donor's plasma will attack and kill the recipient's healthy blood cells c.preformed antibodies in the recipient's blood will bind and clump (agglutinate) the donated cells d.white blood cells from the donor's blood cause inflammation

Which protein forms a bridge between exposed vessel wall collagen and platelet surface receptors? Select one: a. von Willebrand factor b. Thromboxanes c. Endothelin d. Fibrinogen

1. Given these characteristics: Matrix composed almost entirely of extracellular collagen fibers. It is able to withstand great pulling forces. Which of the tissue is described? A. Adipose B. Cartilage С. Bone D. Dense connective tissue E. Loose connective tissue 2. According to Frank-Starling law of the heart, A. increased preload causes increased cardiac output. B. increased afterload causes increased cardiac output. C. decreased preload causes increased afterload. D. afterload influences cardiac output more than preload. E. cardiac output is not influenced by preload. 3. During ventricular diastole, pressure in the ventricles falls to large arteries is about mm Hg, while the pressure within the mm Hg. А. 120, 80 В. 80,120 С. 80,0 D. 0,80 Е. 40, 120 4. Whereas (a) reflex is most important for regulating mean arterial pressure on a short-term basis; And (b) mechanism is most important for regulating mean arterial pressure on a long-term basis. (a) A. baroreceptor B. chemoreceptor C.…

The intrinsic clotting pathway is initiated by _________________________________________. A.Tissue factor VII B.Exposure of plasma to a negatively charged surface (ex. collagen in a wound). C. All are correct. D.None E.TF F.Tissue thromboplastin

10- Which of the following is a potent vasoconstrictor? a) ADP b) Serotonin