During expiration, relaxation of the diaphragm and external intercostals
A. expands the rib cage.
B. increases the volume of the thoracic cavity.
C. increases the pressure in the thoracic cavity.
D. stimulates the phrenic nerve.
E. flattens the floor of the thoracic cavity.
Answer: C
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The number of bones in the adult appendicular skeleton is ____________________.
Fill in the blank(s) with the appropriate word(s).
The period of isovolumetric contraction is immediately followed by
A. the period of ejection. B. isovolumetric relaxation. C. passive ventricular filling. D. atrial contraction. E. AV node depolarization.
A(n) ____________________ is where a message goes from one cell to the next cell.?
Fill in the blank(s) with correct word
The central nervous system includes the
A. cranial nerves. B. brain. C. spinal nerves. D. sensory receptors.