When the tympanic membrane vibrates with the same frequency as the incoming sound waves it is known as
A) resonance.
B) amplitude.
C) pitch.
D) hertz.
E) cycles.
A
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Which muscle abducts and medially rotates the thigh, and shifts the weight from one foot to the other when walking?
A. Gluteus maximus B. Gluteus medius C. Piriformis D. Gemellus superior E. Quadratus femoris
Down-regulation of a target cell can occur in response to
A. signals from the posterior pituitary. B. signals from antagonistic hormone products. C. prolonged increase in the level of a hormone. D. prolonged decrease in the level of a hormone.
What hormone is produced by adipocytes to regulate satiety, a feeling of fullness after eating?
A) erythropoietin (EPO) B) atrial natriuretic peptide (ANP) C) calcitriol D) leptin
The absence of which hormone during development will cause the nervous system to develop abnormally and cause developmental delays?
A) thymosin B) calcitriol C) calcitonin D) androgens E) thyroxine