The tiny cavities in the osteon called lacunae contain ____
a. osteocytes
b. osteoblasts
c. osteoclasts
d. chondroblasts
a
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The corticospinal system controls fine, discrete, voluntary body movements
Indicate whether the statement is true or false
Vasodilation in skeletal and cardiac muscle tissue results from the signal molecule _____ binding to ______ receptors
A. Epinephrine; beta 2 B. Epinephrine; alpha C. Acetylcholine; beta 2 D. Acetylcholine; alpha
Cartilage grows in two ways, appositional and interstitial. What is appositional growth?
the lengthening of hyaline cartilage the secretion of new matrix against the external face of existing cartilage along the edges only of existing osteons, making each osteon larger growth at the epiphyseal plate
Most cells can perform pinocytosis, but only a few kinds can perform phagocytosis
Indicate whether the statement is true or false.