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exam 3
anatomy and physiology
21
Anatomy
11/08/2011

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Cards

Term
Which class of muscle has the major responsibility for a specific movement?
Definition
agonist
Term
Most skeletal muscles of the body act as:
Definition
third-class levers.
Term
Which of the following movements demonstrates a first-class lever?
Definition
Term
Muscles that form the floor of the oral cavity are the:
Definition
suprahyoid muscles.
Term
The major head flexor muscles are the:
Definition
sternocleidomastoid muscles.
Term
The primary function of the deep muscles of the thorax is to promote:
Definition
breathing.
Term
The muscle that divides the body into thoracic and abdomiopelvic cavities is the:
Definition

diaphragm.
Term
The main forearm extensor is the:
Definition
triceps brachii.
Term
Which of the following is not involved in chewing/biting?
Definition
Styloglossus
Term
The only muscle that acts as a knee extensor is the:
Definition
quadriceps femoris.
Term
Which is correctly matched?
Definition
Rectus: straight
Term
The more a muscle shortens during a contraction, the greater the power of the muscle.
Definition
false
Term
The muscles of the feet are similar to the muscles of the palms.
Definition
true
Term
Which muscle prevents cheek biting while chewing?
Definition
buccinator
Term
Which muscle(s) is/are the most important muscle used in inspiration (inhalation)?
Definition
diaphragm
Term
what are the hamstring muscles?
Definition
biceps femoris
semitendinosus
semimembranosus
Term
Where are most of the muscles that move the hand located?
Definition
forearm
Term
name the rotator cuff muscles.
Definition
1- Supraspinatus and its function is to abduct the arm ,and it's innervated by the Suprascapular nerve.
2- Infraspinatus muscle and its function is to externally rotate the arm ,and it's innervated by the Suprascapular nerve.
3- Teres minor muscle and its function is to externally rotate the arm ,and it's innervated by the Axillary nerve.
4- Subscapularis muscle and its function is to internally rotate the humerus ,and it's innervated by the Upper and Lower subscapular nerve.
Term
Which of the following muscles is innervated by the phrenic nerve?
Definition
diaphragm
Term
Which of the following is not used as a criterion for naming muscles?
Definition
Whether the muscle is controlled by the involuntary or voluntary nervous system
Term
__________ are muscles that serve as the primary promoters of a movement.
Definition
Agonists