61) The prime movers of jaw closure and biting are the
A) temporalis and buccinator muscles.
B) masseter and temporalis muscles.
C) buccinator and masseter muscles.
D) temporalis and lateral pterygoid muscles.
62) A muscle that attaches to the skeleton at the pubic crest and the xiphoid process and costal cartilages of ribs 5-7 is the
A) rectus abdominis.
B) external oblique.
C) transversus abdominis.
D) internal intercostal.
63) A muscle that originates along most of the shaft of the femur is the
A) iliopsoas.
B) adductor magnus.
C) vastus intermedius.
D) semitendinosus.
64) Besides the coracobrachialis, what other muscle originates on the coracoid process of the scapula?
A) triceps brachii (part of it)
B) biceps brachii (part of it)
C) subscapularis
D) infraspinatus
65) Which muscle inserts on the lesser tubercle of the humerus?
A) subscapularis
B) supraspinatus
C) biceps brachii
D) deltoid
66) The main function of the flexor retinaculum in the wrist is to
A) reduce friction.
B) hold blood vessels.
C) bind the radius, ulna, and carpals together.
D) prevent the flexor tendons from moving anteriorly when all fingers are flexed.
67) A synergist muscle can do all of the following
except
A) add extra force to a movement.
B) hold a bone in place to create a stable base for the prime mover.
C) prevent inappropriate extra movements that might otherwise be produced.
D) reverse a particular movement caused by the prime mover.
68) The most superficial muscle of the anterior abdominal wall is the
A) external oblique.
B) transversus abdominis.
C) internal oblique.
D) rectus abdominis.
69) Which is
not
a criterion for naming a muscle?
A) action
B) color
C) location
D) shape
70) A nursing infant develops a powerful sucking muscle that adults also use for whistling. This muscle is the
A) platysma.
B) buccinator.
C) zygomaticus.
D) masseter.