Which of the following descriptions best matches the term myometrium?
A) thick layer of smooth muscle cells
B) supports the uterus anteriorly
C) supports the uterus laterally
D) consists of a functional zone and a basilar zone
E) After ovulation, the ovum is captured by it.
A
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Astronauts who travel out of the earth's gravitational field have experienced which of the following?
A. increased bone density B. reduced strength C. both A and B D. none of the above
Which of the following events occurs first?
A) The myosin head binds ATP and detaches from actin. B) The myosin head pivots toward the M line. C) Calcium ions are released from the sarcoplasmic reticulum. D) Calcium binds to troponin. E) Myosin cross-bridges attach to actin.
In an adult, which of the following bones would be producing the largest number of blood cells?
A. Ulna B. Metacarpals C. Calcaneus D. Sternum E. Tibia
Impulses from the primary respiratory center to the respiratory muscles will initiate
A. contraction for inspiration. B. contraction for expiration. C. relaxation for inspiration. D. relaxation for expiration.