Two substances that are useful for dissolving blood clots are
A) calcium ions and prothrombin activator.
B) thrombus and embolus.
C) urokinase and streptokinase.
D) factor IV and factor XII.
C
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Stretching of tissues can cause pain sensations to arise from visceral organs.
Answer the following statement true (T) or false (F)
Answer the following statements true (T) or false (F)
1. A serous membrane covering the wall of the abdominal cavity is called the visceral peritoneum. 2. Pleurisy is the inflammation of the serous membrane lining the abdominal cavity. 3. Serous membranes line body surfaces opening directly to the exterior. 4. The mucocutaneous junction is the area in which skin and mucous membranes meet. 5. Thick synovial fluid lines the digestive system and protects it from physical and chemical damage.
Which of the following hormones has no known function in mammals?
A) MSH B) GnRH C) PRL D) calcitonin E) vasopressin
A substance that provokes an immune response is called a(n)
A) thymosin. B) complement. C) chemotoxin. D) irritant. E) antigen.