________ is a period in adolescence where the reproductive organs become fully functional and the external sex characteristics become more prominent.
Fill in the blank(s) with the appropriate word(s).
Puberty
You might also like to view...
An increase in the partial pressure of oxygen causes pulmonary arterioles to ________, thereby altering _______ to make gas exchange more efficient
A. constrict; perfusion B. dilate; perfusion C. constrict; ventilation D. dilate; ventilation
Meghan thinks she has an abscessed tooth (a bacterial infection). If she does, what type of white blood cell would you expect to see in elevated numbers in a differential count?
A) basophils B) monocytes C) eosinophils D) lymphocytes E) neutrophils
Which of these is a major difference between smooth muscle and skeletal muscle?
A. Only skeletal muscle requires increased calcium ion concentration in the cytosol for contraction. B. Only skeletal muscle has both actin and myosin. C. Myosin is the main regulatory protein in smooth muscle. D. Myosin is the main regulatory protein in skeletal muscle. E. Skeletal muscle usually exhibits spontaneous activity, while smooth muscle cannot contract spontaneously.
Describe the all-or-none principle
A) All stimuli will generate an action potential or none will. B) All stimuli that bring the membrane to threshold will generate identical action potentials. C) Stimuli that bring the membrane to threshold will generate a larger or smaller action potential depending on the size of the stimuli. D) Stimuli that bring the membrane to threshold will generate a longer or shorter action potential depending on the timing of the stimuli. E) Stimuli that do not bring the membrane to threshold can still generate an action potential if the stimuli are strong enough.