Involuntary cardiac muscle fibers on the heart are innervated by
A) preganglionic fibers.
B) visceral motor fibers.
C) sensoriganglionic fibers.
D) somatic motor fibers.
E) All of the answers are correct.
B) visceral motor fibers.
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Which of the labeled diagrams shows coarctation of the aorta?
a) A b) B c) C d) D e) E
Which of these correctly describes the chloride shift?
A. In the tissues, chloride enters red blood cells in exchange for CO2. B. In the tissues, chloride enters red blood cells in exchange for bicarbonate ions. C. In the tissues, chloride exits red blood cells in exchange for carbonic acid. D. In the lungs, chloride enters red blood cells in exchange for CO2. E. In the lungs, chloride enters red blood cells in exchange for bicarbonate ions.
A rounded hole through a bone is termed a
A) ramus. B) foramen. C) linea. D) tubercle. E) facet.
Which of the following capillary types is located in the brain?
A) venule B) fenestrated C) sinusoids D) continuous