The ideal ventilation perfusion ratio for the mammalian lung is
A) 0.1.
B) 1.
C) 10.
D) 100.
Answer: B
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The spinous processes of the thoracic vertebrae inhibit movement in which plane?
A. sagittal B. frontal C. transverse D. all of the above
What two structures make up the renal corpuscle?
A) proximal tubule and loop of Henle B) afferent arteriole and efferent arteriole C) juxtaglomerular apparatus and macula densa D) proximal and distal tubules E) Bowman's capsule and the glomerulus
Which of these events must occur first to trigger the skeletal muscle to generate an action potential and contract?
A) Sodium ions rush into the cell. B) Acetylcholine (ACh) binds to receptors on the sarcolemma and allows passage of sodium ions into the cell. C) Potassium ions diffuse out of the muscle cell. D) The sodium-potassium pump restores sodium and potassium back to their initial positions. E) Acetylcholinesterase (AchE) breaks down acetylcholine (ACh).
Bone growth will continue for as long as the ________ plate exists
A) Diaphyseal B) Osteon C) Medullary D) Epiphyseal