Which of the following is a correct description of arthroplasty?
a) resurfacing of cartilage in a joint
b) reshaping of the ends of the bones in a joint
c) surgically replacing a joint with an artificial joint
d) injection of synovial fluid into the joint
e) a, b, and d
c
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Internally, most teeth are made up of what mineralized, bonelike substance?
A. Cementum B. Enamel C. Dentin D. Gingiva
Which are found in the capillary wall?
a: Endothelium b: Subendothelial layer c: Internal elastic lamina d: Intercellular clefts e: External elastic lamina f: Basement membrane A. a, d, f B. a, b, d, f C. a, b, d, e, f D. a, c, d, e, f E. b, d, e, f
Which of the following is false or incorrect?
A) An excitatory postsynaptic potential occurs if the excitatory effect is greater than the inhibitory effect but less than threshold. B) An inhibitory postsynaptic potential occurs if the inhibitory effect is greater than the excitatory, causing hyperpolarization of the membrane. C) A nerve impulse occurs if the excitatory and inhibitory effects are equal.
The type of gland that secretes sweat into a hair follicle that is found in the axillary, anal, and genital regions is the ________ sweat gland.
A. apocrine B. sebaceous C. merocrine D. ceruminous