Which of these descriptions best matches the term platelets?
A) adhere to collagen beneath endothelium
B) helper cells are one type
C) produce antibodies in response to antigens
D) kill bacteria using hydrogen peroxide
E) often elevated in allergic individuals
Answer: A
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The epidermal layer whose cells have stopped dividing and started to produce large amounts of keratin is the
A) stratum corneum. B) stratum lucidum. C) stratum basale. D) stratum granulosum. E) stratum spinosum.
A greater pressure in the right ventricle than the aorta causes the pulmonary valve to open.
Answer the following statement true (T) or false (F)
Why does a splenectomy lead to an increased risk of septicemia?
A. The spleen is a huge reservoir of monocytes. B. The spleen has a delicate capsule that is difficult to surgically repair. C. The spleen is pulpy and vascular, causing it to bleed easily. D. It can cause excessive phagocytosis of the formed elements.
The adrenal glands are also known as suprarenals.
a. true b. false