Mastering A&P Ch.10

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Which of the following is a hamstring muscle? biceps femoris vastus lateralis vastus medialis rectus femoris

biceps femoris

The primary function of the deep muscles of the thorax is to promote ________. vomiting swallowing breathing back posture

breathing

Which of the following muscles is innervated by the phrenic nerve? sternocleidomastoid muscles external intercostals internal intercostals diaphragm

diaphragm

Paralysis of which of the following would make an individual unable to flex the thigh? soleus biceps femoris iliopsoas and rectus femoris vastus medialis

iliopsoas and rectus femoris

Which muscles is (are) contracted to exhale forcibly? rectus abdominis and diaphragm internal intercostals and rectus abdominus external intercostals and diaphragm diaphragm alone

internal intercostals and rectus abdominus

Which of the following muscles is involved in producing horizontal wrinkles in the forehead? the frontal belly of the epicranius the temporalis the zygomaticus major the medial pterygoid

the frontal belly of the epicranius

Choose the FALSE statement. The hamstrings are prime movers of hip (thigh) flexion and knee (leg) flexion The medial hamstrings promote medial knee (leg) rotation. The hamstrings cross the hip and knee joints. The hamstrings are fleshy muscles of the posterior thigh.

the hamstrings are prime movers of hip (thigh) flexion and knee (leg) flexion

The supraspinatus is named for its location on the posterior aspect of the scapula above the spine. What is its action? to extend and medially rotate the humerus and to act as a synergist of the latissimus doors to help hold the head of the humerus in the glenoid cavity and rotate the humerus laterally to flex and adduct the humerus and to act as a synergist of the pectorals major to stabilize the shoulder joint and help prevent downward location of the humerus and to assist in abduction

to stabilize the shoulder joint and help prevent downward location of the humerus and to assist in abduction

Muscles that help maintain upright posture are fixators. True False

true


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