Test Flashcards
An eye muscle that has a fine degree of control so that its motor neuron supplies _____ to _______ muscle fibers.
2, 6
What mineral is necessary for the myosin-actin cross bridges to bind together for contraction to occur?
calcium
Which of the following is not a function of skeletal muscle?
secrete digestive enzymes.
Which of the following statements is incorrect?
Skeletal muscles are responsible for the pumping action of the heart.
The bundle of collagen fibers at the end of a skeletal muscle that attaches the muscle to bone is called a _______.
tendon.
Muscle fibers differ from typical cells in the muscle fibers because they have _____ _____.
many nuclei
Interactions between actin and myosin filaments are responsible for muscle interaction.
True.
What muscle acts as an antagonist to the transversospinalis muscles during extension of the vertebral column?
Rectus abdominis.
The theory that explains how muscle fibers contract is called ____ _____ ______.
sliding filament theory.
Because skeletal muscle contractions demand large quantities of ATP, muscles have _____.
calcium? check answer.
What term best describes the relationship between pronator teres and supinator?
Antagonist.
Which term best describes the relationshop between deltoid and supraspinatus muscles during shoulder abduction?
Synergist.
A baseball pitcher who injures one of his SITS muscles most commonly tears to the tendon of which muscle?
Supraspinatus.
Which muscle can you ask your partner to perform at the shoulder in order to contract the deltoid?
abduction.
Bilateral contraction of the upper fibers of the trapezius will create what movements of the head and neck?
Extension.
To locate the supraspinous beel, you must palpate through which muscle?
trapezius.
What is the shared attachment site for three out of four rotator cuff muscles?
The greater tubercle of the humerus.
Which rotator cuff muscle creates shoulder abduction?
supraspinatus.
The rhomboids are superficial to the erector spinae and deep to which muscle?
trapezius.
What actions could you ask your partner to perform to enable you to feel the levator scapula contract?
shoulder shrugs, basically elevate the scapula.
Which head of the biceps brachii passes through the intertubercular groove?
long head of bicep.
Which movement would contract the fibers of the biceps brachii?
elbow flexion.
Which muscle is a strong elbow flexor located deep to the biceps brachii?
brachialis.
Which muscle runs between the pisiform and medial epicondyle of the humerus?
Flexor carpi ulnaris.
