The boundary between conducting zone and respiratory zone structures occurs at the ________
A) terminal bronchiole/respiratory bronchiole junction.
B) tracheal/main (primary) bronchi junction
C) tertiary bronchi/bronchiole junction
D) secondary bronchi/tertiary bronchi junction
Answer: A
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Which two glands are especially noted for regressing after childhood?
A. The anterior and posterior pituitary B. The thymus and pineal gland C. The thymus and adrenal medulla D. The thyroid and parathryroids E. The thymus and thyroid
The functional unit of skeletal muscle is the myofibril
Indicate whether the statement is true or false
A common injury to the ankle occurs by excessive turning of the sole inward, termed
A) eversion. B) protraction. C) dorsiflexion. D) plantar flexion. E) inversion.
In an EPSP (excitatory postsynaptic potential), there is a
A. net movement of sodium ions out of the cells. B. net movement of chloride ions into the cells. C. decrease in action potential amplitude. D. local hyperpolarization. E. local depolarization.