Which of the following statements concerning musculoskeletal system development is true?
A. Skeletal muscles develop from crest cells.
B. Myoblasts produce somites.
C. The vertebral column develops from somite-derived mesoderm.
D. Enlargement of muscles after birth is due to an increase in the number of muscle fibers.
E. Ossification ends before birth.
C
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Which of the following conditions would result from hyposecretion of aldosterone?
a) Decreased heart rate b) Decreased airway dilation c) Dehydration d) Decreased oxygen delivery to the brain e) Metabolic acidosis
Which of the following is a mechanism of heat transfer that involves direct contact?
a) Conduction b) Convection c) Radiation d) Evaporation e) Metabolic rate
Describe the stimulus for bone resorption and how resorption is carried out at the cellular and chemical levels
What will be an ideal response?
People with REM sleep disorder most likely have:
a. damage in the pons and midbrain. b. damage to areas of the brain that normally produce movements during REM. c. restricted oxygen intake during sleep due to factors associated with obesity. d. abnormally high levels of serotonin in the brain.