Respiration relies on the muscles of inspiration & expiration. The thick, dome-shaped muscle that
separates the abdomen from the thorax is the...
A. sternocleidomastoid
B. Levator costarum Longis
C. serratus posterior superior
D. pectoralis major
E. diaphragm - correct answer ✔✔E. diaphragm
Most pharyngeal muscles are innervated by the cranial nerves ...
A. V,VII
B. XI, XII
C. X, XI
D. IX, X
E. VIII, X - correct answer ✔✔D. IX (glossopharyngeal), X (vagus) --> these CN's make up the pharyngeal
plexus
The primary muscle of the lips is the...
A. orbicularis oris
B. buccinator
C. levator labii superioris
D. zygomatic major - correct answer ✔✔A. orbicularis oris
The neurons that transmit information away from the brain are called...
A. afferent neurons
B. efferent neurons
, C. primary neurons
D. secondary neurons
E. peripheral neurons - correct answer ✔✔B. efferent neurons
An important structure adjacent to the brainstem that contains the hypothalamus (which controls
emotions) and the thalamus (which relays sensory impulses to various portions of the cerebral cortex) is
called the ...
A. mesencephalon
B. diencephalon
C. inferior cerebellar peduncle
D. superior cerebellar peduncle
E. postcentral gyrus - correct answer ✔✔B. diencephalon
The corpus striatum of the basal ganglia is composed of 3 nuclear masses, which are the...
A. globus pallidus, caudate nucleus, and putamen
B. putamen, caudate nucleus, and basal ganglia
C. supramarginal gyrus, angular gyrus, and putamen
D. substantia nigra, angular gyrus, and globus pallidus - correct answer ✔✔A. globus pallidus, caudate
nucleus, and putamen
The structure that regulates body posture, equilibrium, and coordinated fine motor movements is the ...
A. angular gyrus
B. corticospinal tract
C. circle of Willis
D. cerebellum
E. supramarginal gyrus - correct answer ✔✔D. cerebellum
The anterior cerebral artery supplies blood to the...
A. corpus callosum & basal ganglia
B. corpus striatum
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