Primitive alveoli begin to develop profusely in the embryo around the
A. time of birth.
B. 28th week.
C. 8th week.
D. 18th week.
Answer: B
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Tetanic muscle contractions don't occur in a normal cardiac muscle because
A) cardiac muscle tissue contracts on its own. B) neural stimulation is lacking. C) the refractory period lasts until the muscle relaxes. D) the refractory period ends before the muscle reaches peak tension. E) potassium channels outnumber sodium channels.
The brachial region is commonly known as the ________.
A. upper arm B. buttock C. navel D. breastbone E. groin
A person who associates sounds with tastes has synesthesia.
Answer the following statement true (T) or false (F)
What are the air passages beneath the conchae that create turbulence within the nasal cavity called?
A. Choanae B. Nares C. Meatuses D. Conchae E. Fossae