By covering the whole body surface, the skin acts as a protective barrier and plays a role in
A. respiration.
B. circulation.
C. digestion.
D. excretion.
E. immunity.
E
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A condition in which bone becomes riddled with holes making them brittle and compromises normal function is called
A) osteopenia. B) osteoporosis. C) osteomyelitis. D) osteitis. E) osteomalacia.
Chemical synapses are more common than electrical synapses
Indicate whether this statement is true or false.
A bone thickens
A) as compact bone is deposited beneath the periosteum of the diaphysis. B) as a result of cell division in the medullary cavity. C) due to increased production of bone matrix by osteoclasts. D) as a result of increased activity within the epiphyseal plate.
The motor division is also called the ________ system; the sensory division is also called the ________ system.
A. afferent; efferent B. efferent; afferent