The membrane potential in an undisturbed cell is called its
A) quiet potential.
B) inactive state.
C) passive state.
D) resting membrane potential.
E) interphase.
D
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Marielle is very thirsty following her tennis game. She drinks for a few minutes, then stops. The stimulus to stop drinking comes from
A. changes in intracellular fluid concentration. B. distension of her stomach. C. hormones secreted by stomach cells. D. changes in extracellular fluid concentration.
Commissural fibers
A) carry pain information to the correct brain structure. B) are divided by the longitudinal fissure. C) link the cerebral cortex to the diencephalon. D) interconnect and allow communication between cerebral hemispheres. E) connect the frontal lobe to other lobes of the same hemisphere.
Which statement about the effects of aging on the endocrine system is true?
A. The increase of estrogen and testosterone cause osteoporosis. B. Up-regulation stops. C. Estrogen and testosterone increase dramatically with aging. D. Levels of hormones decline with age.
Which of the following statements accurately describes the pressure in the atria and ventricles at the beginning of the cardiac cycle?
A) Pressure is highest in the atria and lowest in the ventricles. B) Pressure is lowest in the atria and highest in the ventricles. C) Pressure is equal in the chambers of the heart. D) We're unsure of the pressure in the beginning of the cardiac cycle.