Deoxygenated blood from the myocardium enters the right atrium through the:
A. cardiac veins.
B. coronary arteries.
C. coronary sinus.
D. superior vena cava.
Answer: C. coronary sinus.
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Retrograde amnesia is the loss of memory for all events that happened before a serious brain trauma such as a blow to the head.
Answer the following statement true (T) or false (F)
During embryonic development, blood vessels are formed by
a) endodermal cells. b) pluripotent stem cells. c) angioblasts. d) fibroblasts. e) osteoblasts.
Complex carbohydrates include
A. cellulose and glucose. B. glucose and fructose. C. starch, glycogen, and cellulose. D. maltose and sucrose. E. glucose and lactose.
Which of the following statements concerning the process of tissue repair is false?
A. In regeneration, destroyed cells are replaced by the same type of cells. B. In replacement, a new type of tissue develops that eventually results in scar production. C. Permanent cells have a limited ability to replicate. D. Labile cells cannot be replaced by the process of regeneration. E. Stable cells do not actively replicate after growth but retain the ability to regenerate.