1. Which of the following statements is FALSE regarding All of the above statements
the muscle pictured above depicted by the lab instruc- are true
tor?
It protracts the scapula
It stabilizes the scapula
It works with the pectoralis minor to draw the scapula
forward and laterally
All of the above statements are true
All of the above statements are false
2. Which of the following statements is FALSE regarding Statements 1, 2, and 3 are
the muscle pictured above depicted by the lab instruc- all True.
tor?
It protracts the scapula
It stabilizes the scapula
It works with the pectoralis minor to draw the scapula
forward and laterally
Statements 1, 2, and 3 are all True.
Statements 1, 2, and 3 are all False
3. Identify the muscle and innervation in the picture Pectoralis Major; medial
above, specified by the lab instructor.(Dissection of the and lateral pectoral nerve
anterior aspect of the fetal pig)
4. Which of the following statements is FALSE regarding It is innervated by the low-
the muscle pictured (highlighted in blue and specified er scapular nerve (the del-
by the arrow)? toid is innervated by the
It is innervated by the lower scapular nerve axillary nerve.)
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, Portage Learning: A&P 1 Lab 6
It abducts the humerus
It flexes the humerus
It extends the humerus
All of the above statements are true
5. Which of the following statements is TRUE regarding e. a. and b. are true state-
the middle portion of the muscle pictured (highlighted ments
in blue and specified by the arrow)?
a. It is innervated by the axillary nerve
b. It abducts the humerus
c. It flexes the humerus
d. It extends the humerus
e. a. and b. are true statements
f. a. and c. are true statements
g. a. and d. are true statements
6. Your patient has sustained a rotator cuff injury. It is b.
determined that the axillary nerve was damaged as The teres minor is the only
a result. Given this information, which of the muscles rotator cuff muscle inner-
pictured above would you expect to be affected? vated by the axillary nerve.
7. Infraspinatus: d. prevents upward slip-
a. Internally rotates the humerus page of the humerus
b. prevents upward slippage of the humerus during when the arm is at rest
abduction
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