Which of the following is NOT a disorder of water balance?
A) hypotonic hydration, in which sodium content is normal but water content is high
B) excessive hydration due to excess atrial natriuretic peptide (ANP) secretion
C) edema or tissue swelling, which is usually due to an increased capillary hydrostatic pressure
D) excess water in interstitial spaces due to a low level of plasma proteins
B
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A reflex arc in which both the receptor and the effector organs of the reflex are on the same side of the spinal cord is
A. monosynaptic. B. polysynaptic. C. ipsilateral. D. contralateral. E. None of the choices is correct.
Isovolumetric contraction ________.
A) refers to the short period during ventricular systole when the ventricles are completely closed chambers B) occurs while the AV valves are open C) occurs immediately after the aortic and pulmonary valves close D) occurs only in people with heart valve defects
An IPSP is
a. produced by increased permeability to Na+ and K+ b. produced by increased permeability to K+ or Cl- c. a hyperpolarization of the presynaptic cell d. a decrease in the postsynaptic membrane potential e. an decrease in the presynaptic membrane potential
The integumentary system has many functions, one of which is
A. prevention of albinism. B. detection of heat and touch. C. regulation of acid-base balance. D. production of Vitamin E. E. protection from cancer.