Which of the following descriptions best matches the term renal papilla?
A) It releases renin.
B) It creates high interstitial NaCl concentration.
C) Final urine enters here.
D) Initial filtrate enters here.
E) It is the tip of the medullary pyramid.
E
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_______ (Contraction or Relaxation?) of the diaphragm ______ (increases or decreases?) the volume of the thoracic cavity, which, in turn causes intra-alveolar pressure to increase
Fill in the blank(s) with correct word
Decreased extracellular K+ levels cause
A. hyperpolarization of plasma membranes. B. cells to become more excitable. C. hypopolarization of plasma membranes. D. increased permeability of plasma membranes. E. more action potentials to be generated.
The training regimen of a competitive weight lifter is designed partly to ________
A) lower the threshold for muscle excitation B) convert certain parallel muscles into stronger pennate muscles C) increase the size of his motor units D) convert white muscle tissue to red muscle E) increase the average number of myofibrils per muscle fiber
Phasic receptors for light touch and texture are
A. Krause bulbs. B. arrector pili corpuscles. C. lamellated corpuscles. D. tactile corpuscles. E. Ruffini corpuscles.