Receptors for acetylcholine are located on the
A) Synaptic knob.
B) Motor end plate.
C) Sarcomere.
D) Synaptic cleft.
E) Transverse tubule
B) Motor end plate.
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Which artery carries blood from the abdominal aorta to the hindlimbs?
A) external iliac artery B) internal iliac artery C) iliolumbar artery D) middle sacral artery
Which of the following is not a possible circulatory route from the heart?
A. Heart ? arteries ? capillary bed ? vein ? capillary bed ? veins ? heart B. Heart ? arteries ? capillary bed ? veins ? heart C. Heart ? arteries ? arterial anastomosis ? capillary bed ? venous anastomosis ? veins ? heart D. Heart ? arteries ? capillary bed ? vein ? capillary bed ? arteries ? heart E. Heart ? arteries ? arterial anastomosis ? capillary bed ? veins ? heart
Which of the following is not part of the coronary circulation?
A. Coronary sinus B. Aorta C. Anterior interventricular branch D. Small cardiac veins E. Circumflex branch
When exposed to ultraviolet light, keratinocytes convert a steroid precursor into ________, a molecule that is crucial for regulation of calcium levels.
A. phosphorus B. calcitonin C. creatine D. calcitriol E. cholecalciferol