Which of the following explains why people get gray hair as they age?
A. Collagen decreases in quantity and function with aging.
B. Melanocytes decrease in function with aging.
C. Sebaceous glands decrease in number and function with aging.
D. Hair follicles atrophy and decrease in function with aging.
Answer: B
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What two muscles converge to form the Achilles tendon?
A. Gluteus medius and gluteus minimus muscles B. Tibialis anterior and extensor digitorum longus muscles C. Fibularis longus and fibularis brevis D. Gastrocnemius and soleus
Zoonotic diseases are transmissable from animals to humans. These include ringworm, a fungus which infects pets and people, plague, a bacterial disease resulting from a flea bite to mammals including humans, and rabies, a viral disease of the central nervous system that affects all mammals and is almost always fatal. On the other hand, the feline immunodeficiency virus has no effect on humans and
human immunodeficiency virus has no effect on cats, though each may be deadly to its normal host. Speculate on what may prevent cross-species infection in some cases and allow it in others. What will be an ideal response?
During a spinal tap, cerebrospinal fluid is obtained from which of the following locations?
A. Subarachnoid space B. Epidural space C. Sagittal sinus D. Subdural space E. Dural sinus
Which bone(s) of the crural region are weight bearing?
A. Fibula B. Calcaneus C. Tibia D. Tibia and fibula E. Femur