Biol 2457 Exam 2 questions with answers
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what muscle pulls the scapula forward & downwards? - CORRECT
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ANSWERS ✔✔pectoralis minor |\ |\
what muscle pulls the scapula upwards and rotates it laterally -
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CORRECT ANSWERS ✔✔serratus anterior
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what is the prime adductor of the arm - CORRECT ANSWERS
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✔✔pectoralis major |\
what medially rotates the arms - CORRECT ANSWERS ✔✔pectoralis
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major
what is the role of the external intercostal? - CORRECT ANSWERS
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✔✔increase thoracic volume to allow inspiration (inhaling)
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what does the internal intercostal do? - CORRECT ANSWERS
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✔✔depresses ribs for forced expiration (exhaling) |\ |\ |\ |\ |\
What is the diaphragm? - CORRECT ANSWERS ✔✔muscle under the
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rib cage involved in breathing (inspiration)
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,What are the muscles of mastication? - CORRECT ANSWERS
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✔✔masseter, temporalis, orbicularis oris, buccinator, lateral & medial
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pteryoid
what is the role of the masseter? - CORRECT ANSWERS ✔✔elevates
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mandible
What does the temporalis do? - CORRECT ANSWERS ✔✔elevates and
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retracts mandible |\
what does the orbicularis oris do? - CORRECT ANSWERS ✔✔closes
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lips
what is the role of the buccinator - CORRECT ANSWERS ✔✔To push
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the cheek towards the teeth, thus preventing food squeezing into the
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vestibule during chewing|\ |\
what is the prime abductor of the arm - CORRECT ANSWERS
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✔✔deltoid
what stabilizes, elevates, retracts & rotates the scapula - CORRECT
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ANSWERS ✔✔trapezius |\
, what is the latissimus dorsi - CORRECT ANSWERS ✔✔Muscle that
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causes extension & adduction of arm at the shoulder
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rhomboid major and minor are for - CORRECT ANSWERS ✔✔stabilizing
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the scapula
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teres major - CORRECT ANSWERS ✔✔extends, adducts, and medially
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rotates arm |\
teres minor - CORRECT ANSWERS ✔✔rotates arm laterally
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levator scapulae - CORRECT ANSWERS ✔✔elevates and adducts
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scapula or flexes neck |\ |\ |\
supraspinatus - CORRECT ANSWERS ✔✔initiate abduction of the arm
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infraspinatus - CORRECT ANSWERS ✔✔rotates arm laterally
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What is spongey bone made of? - CORRECT ANSWERS ✔✔trabeculae
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what is the function of trabeculae - CORRECT ANSWERS ✔✔To bear
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weight and help bones resist stress (bending and stretching).
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what muscle pulls the scapula forward & downwards? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔pectoralis minor |\ |\
what muscle pulls the scapula upwards and rotates it laterally -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔serratus anterior
|\ |\ |\
what is the prime adductor of the arm - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔pectoralis major |\
what medially rotates the arms - CORRECT ANSWERS ✔✔pectoralis
|\ |\ |\ |\ |\ |\ |\ |\ |\
major
what is the role of the external intercostal? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔increase thoracic volume to allow inspiration (inhaling)
|\ |\ |\ |\ |\ |\
what does the internal intercostal do? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔depresses ribs for forced expiration (exhaling) |\ |\ |\ |\ |\
What is the diaphragm? - CORRECT ANSWERS ✔✔muscle under the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
rib cage involved in breathing (inspiration)
|\ |\ |\ |\ |\
,What are the muscles of mastication? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔masseter, temporalis, orbicularis oris, buccinator, lateral & medial
|\ |\ |\ |\ |\ |\ |\ |\
pteryoid
what is the role of the masseter? - CORRECT ANSWERS ✔✔elevates
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
mandible
What does the temporalis do? - CORRECT ANSWERS ✔✔elevates and
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
retracts mandible |\
what does the orbicularis oris do? - CORRECT ANSWERS ✔✔closes
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
lips
what is the role of the buccinator - CORRECT ANSWERS ✔✔To push
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
the cheek towards the teeth, thus preventing food squeezing into the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
vestibule during chewing|\ |\
what is the prime abductor of the arm - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔deltoid
what stabilizes, elevates, retracts & rotates the scapula - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔trapezius |\
, what is the latissimus dorsi - CORRECT ANSWERS ✔✔Muscle that
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
causes extension & adduction of arm at the shoulder
|\ |\ |\ |\ |\ |\ |\ |\
rhomboid major and minor are for - CORRECT ANSWERS ✔✔stabilizing
|\ |\ |\ |\ |\ |\ |\ |\ |\
the scapula
|\ |\
teres major - CORRECT ANSWERS ✔✔extends, adducts, and medially
|\ |\ |\ |\ |\ |\ |\ |\ |\
rotates arm |\
teres minor - CORRECT ANSWERS ✔✔rotates arm laterally
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levator scapulae - CORRECT ANSWERS ✔✔elevates and adducts
|\ |\ |\ |\ |\ |\ |\ |\
scapula or flexes neck |\ |\ |\
supraspinatus - CORRECT ANSWERS ✔✔initiate abduction of the arm
|\ |\ |\ |\ |\ |\ |\ |\
infraspinatus - CORRECT ANSWERS ✔✔rotates arm laterally
|\ |\ |\ |\ |\ |\
What is spongey bone made of? - CORRECT ANSWERS ✔✔trabeculae
|\ |\ |\ |\ |\ |\ |\ |\ |\
what is the function of trabeculae - CORRECT ANSWERS ✔✔To bear
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
weight and help bones resist stress (bending and stretching).
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