What is the function of melanin?
A) It provides water-resistant properties to the integument.
B) It continuously divides to replace cells that are lost or shed at the epithelial surface.
C) It is converted by the kidneys into the hormone calcitriol.
D) It is required for the normal maintenance of epithelial cells.
E) It protects DNA from the damaging effects of ultraviolet radiation.
E) It protects DNA from the damaging effects of ultraviolet radiation.
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Answer the following statements true (T) or false (F)
1. Vitamin C supplements are sometimes given to women to help prevent osteoporosis. 2. An improperly treated epiphyseal fracture can result in the affected limb being shorter than normal. 3. The bones of the middle ear are part of the axial skeleton. 4. There are more bones in the axial skeleton than in the appendicular skeleton. 5. The occipital bone is the bone in the back of the skull.
Which of these is not included in the female vestibule?
A. The urinary orifice B. The mons pubis C. The vaginal orifice D. The labia minora E. The clitoris
What does the heart use as its primary fuel source?
a. glucose b. fatty acids c. lactate d. amino acids e. calcium
Test results from amniocentesis are immediate.
Answer the following statement true (T) or false (F)