Which of the following describes a comminuted fracture?
A. A fine crack is visible but bones are still aligned.
B. The fracture spirals around the axis of a long bone.
C. The fracture is parallel to the long axis of the bone.
D. The bone is broken into three or more pieces.
E. The bone is bent on one side and has an incomplete fracture on the other side.
Answer: D
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A. Enteroendocrine cells B. Mucous cells C. Regenerative cells D. Parietal cells E. Chief cells
The membrane potential in a typical cell
1.is the sum of the individual potentials of all ions. 2.is positive on the inside relative to the outside of the cell. 3.is the result of a charge difference between the inner and outer surfaces of the membrane. 4.is entirely the result of the difference in potassium ion concentrations on the two sides of the membrane. 5.is entirely the result of the difference in cation concentrations on the two sides of the membrane.
LH and FSH are
A. gonadotropic hormones. B. sex hormones. C. only in females. D. All apply.
Which muscle type depends solely on the sarcoplasmic reticulum as its calcium source?
A. Cardiac muscle B. Skeletal muscle C. Skeletal and smooth muscle D. Smooth muscle E. Smooth and cardiac muscle