Chapter 20 Flashcards
pectoralis major
moves the brachium
brachium
top half of arm
pectoralis minor
moves the pectoral girdle
serratus anterior
moves the pectoral girdle
deltoid
moves the brachium
anterior chest and shoulder muscles
pec major
pec minor
serratus anterior
deltoid
anterior brachium
biceps brachii
brachialis
brachioradialis
biceps brachii
flexes the forearm and supinates the hand
has two heads
brachialis
flexes the forearm
brachioradialis
flexes the forearm
anterior antebrachium muscles
pronator teres palmaris longus flexor carpi radialis flexor carpi ulnaris flexor digitorum superficialis flexor digitorum profundus flexor pollicis longus supinator
pronator teres
pronates the hand
palmaris longus
flexes the hand
flexor carpi radialis
flexes and abducts the hand
flexor carpi ulnaris
flexes and adducts the hand
flexor digitorum superficialis
flexes the hand and the 2-5 digits
flexor digitorum profundus
flexes the hand and the 2-5 digits
flexor pollicis longus
flexes the thumb
supinator
supinates the hand
trapezius
moves the pectoral girdle
rhomboid major
moves the pectoral girdle
rhomboid minor
moves the pectoral girldle
levator scapulae
moves the pectoral girdle
latissimus dorsi
moves the brachium
supraspinatus (rotator cuff muscle)
reinforces the glenohumeral joint
infraspinatus (rotator cuff muscle)
reinforces the glenohumeral joint
subscapularis (rotator cuff muscle)
reinforces the glenohumeral joint
teres major
moves the brachium
teres minor (rotator cuff muscle)
reinforces the glenohumeral joint
triceps brachii
extends the forearm
has 3 heads
what is the only muscle on the posterior brachium?
triceps brachii
extensor carpi radialis longus
extends and abducts the hand
extensor carpi radialis brevis
extends and abducts the hand
extensor digitorum
extends the hand and the 2-5 digits
extensor carpi ulnaris
extends and adducts the hand
extensor pollicis longus
extends the thumb
what does longus mean?
longer tendon
what does brevis mean?
shorter tendon
____ is the major function of the upper limb.
prehension
the name of the deltoid muscle tells you its _____.
shape
what is the anatomical word for arm?
brachium
what is the common name for the pollex?
thumb
what does the extensor digitorum muscle move?
the fingers (digits)
all upper limbs are ____.
paired
all upper limb bones are bound to the axial skeleton by the _______ ______ which is composed of four bones. two clavicles and two scapulas.
pectoral girdle
the pectoral girdle is composed of four bones. what are they?
two clavicles and two scapulas
clavicle
acts as a strut that keeps the upper limb lateral , thereby letting the limb swing free of the trunk
which bone is somewhat triangular in shape?
scapula
arm bone
humerus
lateral forearm bone
radius
medial forearm bone
ulna
8 bones in the proximal part of the hand
carpals
5 bones in the palm
metacarpals
14 bones in the digits
phalanges
the glenoid cavity faces ___
laterally
the spine of the scapula is ____
posterior
true or false: the bones of the pectoral girdle are parts of the axial skeleton
false
the trochlea is ____ to the capitulum
medial
the greater tubercle is ______ lateral to the lesser tubercle
lateral
the humeral head faces
medial
the anterior surface of the distal end of the radius is _____ relative to the posterior surface
concave
the radial notch is found on the _____
ulna
which two bones articulate with the radius
scaphoid and lunate
using their functions, predict whether the carpi muscles attach to the phalanges or metacarpals
metacarpals
the _______ attach to the scapula
serratus anterior
what are the rotator cuff muslces?
infraspinatus
supraspinatus
subscapularis
teres minor