Which statement is false?
a. Sound waves are produced by a disturbance pattern in air molecules.
b. Sound waves gradually dissipate as they travel from the original sound source.
c. Long sound waves vibrate more hair cells near the oval window than near the helicotrema.
d. A sound at 60 decibels will always be louder than a sound at 50 cycles per second.
e. Sound waves vibrate perilymph before they vibrate endolymph.
D
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What region of the pelvis contains the organs of the inferior abdominal cavity?
A) true pelvis B) pelvic outlet C) false pelvis D) pelvic inlet
Which affects osteoblast and osteoclast activity?
A. Gravity B. Blood calcium level C. Calcitonin and parathyroid hormone levels D. Mechanical stress E. All of the choices are correct.
Clonal selection of T cells happens in the thymus
Indicate whether the statement is true or false
After a severe burn, a patient may require a(n) ________, in which skin is removed from an unaffected area of his body and moved to the burned area.
A. antibacterial patch B. heterograft C. donor site D. autograft