During accommodation, the ciliary muscle ________ causing the ciliary body to move ________ and apply ________ tension on the lens
A) relaxes; toward the lens; more
B) contracts; toward the lens; less
C) contracts; away from the lens; more
D) relaxes; inward; less
E) contracts; away from the lens; less
B
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Which of the following terms refers to a lack of oxygen supply to heart muscle cells?
functional syncytium embolism ischemia infarction
Platelets release __________, a chemical vasoconstrictor that contributes to the vascular spasm.
A. heparin B. thrombin C. thromboplastin D. prostacyclin E. serotonin
Drugs known as calcium channel blockers such as nifedipine can be used to
A) decrease the force of cardiac contraction. B) increase blood pressure. C) increase the rate of cardiac contraction. D) increase the force of contractions. E) decrease afterload.
Which is the most superior region of the stomach?
A) fundic region (or fundus) B) cardiac region C) body D) pyloric region