Mitral valve prolapse (MVP) generates a murmur associated with the ________ heart sound that occurs when the ________.
A. lubb (S1); atria contract
B. lubb (S1); ventricles relax
C. dupp (S2); atria relax
D. lubb (S1); ventricles contract
E. dupp (S2); ventricles relax
Answer: D
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____________________ is the pigment that can store small amounts of oxygen in the skeletal muscle
Fill in the blank(s) with correct word
Which of the following accurately describes thromboplastin?
A. A compound released by healed tissues that initiates clot dissolution B. A precursor to prothrombin C. A compound that keeps platelets from sticking to the endothelium D. A compound released by damaged tissue that initiates the extrinsic clotting pathway E. A compound released by damaged tissue that initiates the intrinsic clotting pathway
The least numerous but the largest of the papillae are arranged as a V-shape on the posterior dorsal surface of the tongue. They contain the majority of taste buds and are called ________ papillae.
A. papiform B. filiform C. foliate D. vallate E. fungiform
A change in the resting membrane potential has the following characteristics: non-propagated, graded, can summate. This type of change can
A. result in repolarization. B. be a consequence of an increase in the permeability to Na+. C. be a local potential. D. be an action potential. E. be a local potential and a consequence of an increase in the permeability to Na+.