A volleyball player jumps to spike the ball and feels a pop as she goes up. When she comes down, she has lost the ability to plantar flex her foot. Which structure has she likely injured?
A. Her calcaneal (Achilles) tendon
B. Her anterior cruciate ligament
C. Her posterior cruciate ligament
D. Her anterior-lateral patellar retinaculum
A. Her calcaneal (Achilles) tendon
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The movement of digested food from the digestive system to the circulating fluid is called:
a. digestion b. deglutition c. absorption d. peristalsis
Rickets, a disease characterized by overproduction and deficient calcification of osteoid tissue, is caused by a lack of sufficient
A. Thyroid hormone. B. Calcitonin. C. Vitamin A. D. Vitamin D. E. Vitamin C.
Which of the following represents a local reflex?
A. Motility of the digestive tract in response to stretch of the wall of the digestive tract B. Parasympathetic stimulation causes the gallbladder to release bile C. Secretion of digestive enzymes under the control of the vagus nerve D. All of the choices are correct.
There are ________ enlargements of the spinal cord where nerves supplying the extremities enter and leave.
A. two B. three C. four D. five E. six