1) Which of the following muscles INSERTS onto the ribs? a. erector spinae b. di
ID: 200989 • Letter: 1
Question
1) Which of the following muscles INSERTS onto the ribs?
a. erector spinae
b. diaphragm musce
c. external intercostal muscle
d. a and c
e. all the above
2. Which of the following nerves functions to innervate muscles of facial expression?
answer: is it facial nerve CN VII?
3. Which of the following muscles is connected by a 'raphe'?
a. buccinator muscle and constrictor muscle
b. frontalis and occipitalis muscle
c. levator labii superioris muscle and depressor labii inferioris muscle
d. muscle fibers of the orbicularis oculis muscle
4. Which of the following muscles have a bony attachment (origin OR insertion) in common?
a. genioglossus muscle
b. geniohyoid muscle
c. mentalis muscle
d. a and b
e. all of the above have bony attachment in common.
Explanation / Answer
1. external intercostal muscles only ( erector spinae insert into thoracic and spinal vertebrae while diaphragm inserts into central aponeurotic tendon)
2. All groups of facial muscles are innervated by facial nerve VIII
3.a. buccinator and constrictor muscle ( pterigomandibular raphe)
4.e. all of the above have bony attachment in common ( all the three muscles have same bone for origin : mandible).
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