What part of the body does the rectus abdominis move?
a. head and neck
b. upper extremities
c. trunk of the body
d. lower extremities
c. trunk of the body
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The primary motor cortex is part of the
A. parietal lobe. B. insula. C. temporal lobe. D. occipital lobe. E. frontal lobe.
Each NADH molecule fed into the electron transport chain produces _____ ATPs
A. 2 B. 3 C. 4 D. 5 E. 6
The single most important risk for skin cancer is ________
A) genetics B) use of farm chemicals C) race D) overexposure to UV radiation
What are blood islands, and from which cells do they form?
A) Blood islands are primitive capillary networks formed from embryonic cells scattered within the yolk sac. B) Blood islands are primitive arteries that are formed from hemangioblasts. C) Blood islands are primitive veins that are formed from hemangioblasts. D) Blood islands are aggregations of embryonic cells scattered within the yolk sac that form blood vessels and blood cells. E) Blood islands are collections of blood cells that are formed from embryonic hematopoietic stem cells.