appendicular muscles Flashcards
What anterior thoracic muscles are synergistic and what do they do?
pectoralis minor and serratus anterior- protract and depress the scapula
What complication could arise from a radial mastectomy?
paralysis of serratus anterior, winged scapula
What are the posterior muscles that move the pectoral girdle/what do they all do?
adduct, elevate and retract the scapula
traps also draw head back and rhombs inferiorly rotate
What is the prime arm extensor?
latissimus dorsi
What is the prime mover of arm flexion?
pectoralis major
What is the prime abductor of the arm?
deltoid
How are the lats related to a weak heart?
Can cut the lats free from humerus and wrap aroudn heart to strengthen the cardiac muscle
How are breast implants related to the chest muscles?
Often implanted behind the pectoralis major
What muscle is synergistic to the pectoralis major?
corocobrachialis
What muscle is synergistic with the lats?
teres major
What two muscles are synergistic within the rotator cuff?
infraspinatus and teres minor, adduct and laterally rotate arm
What muscle is most commonly injured in the rotator cuff and why?
supraspinatus because the tendon gets pinched by the acromion when the muscle is contracted
What is tennis elbow?
lateral epicondylitis
what is a powerful supinator of the forearm?
biceps brachii
Where do muscles of the anterior compartment of the forearm generally originate and what do they do?
medial epicondyle of the humerus, flex the wrist, metacarpals and/or interphalangeals
Where do the muscles of the posterior compartment of the forearm generally originate and what do they do?
the lateral epicondyle of the humerus and extend the wrist, metacarpals, interphalangeals