Muscles of the Upper Limb

Besides the dedicated flexors of the wrist, other muscles that cross the wrist joint and may function synergistically to assist in wrist flexion. Which of these muscles could function in wrist flexion? Select all that apply. a. Flexor carpi radialis b. Flexor digitorum profundus c. Flexor digitorum superficialis d. Palmaris longus e. Pronator quadratus f. Pronator teres

a. Flexor carpi radialis b. Flexor digitorum profundus c. Flexor digitorum superficialis d. Palmaris longus

Which of the muscles below are internal rotators of the glenohumeral joint? Select all that apply a. Latissimus dorsi b. Rhomboid major c. Subscapularis d. Teres major e. Teres minor

a. Latissimus dorsi c. Subscapularis d. Teres major

Which of these statements is true regarding the brachium? a. The biceps brachii and the brachialis are the only flexors of the elbow b. The biceps brachii does not cross the shoulder joint c. The biceps brachii is superficial to the brachialis muscle d. The anconeus is the only extensor of the elbow

a. The biceps brachii and the brachialis are the only flexors of the elbow

When doing pushups, you pull a muscle in your shoulder. With your brachium in a horizontal position, what muscle would be helping your pectoralis in a pushup? a. anterior part of the deltoid b. biceps brachii c. brachioradialis d. coracobrachialis e. latissimus dorsi and teres major

a. anterior part of the deltoid

What muscles are synergists to the biceps brachii? Select all that apply. a. brachialis b. brachioradialis c. coracobrachialis d. triceps brachii

a. brachialis b. brachioradialis

deltoid causes ________ of the glenohuermal joint

abduction

supraspinatus causes ________ of the glenohumeral joint

abduction

the anterior, middle, and posterior parts of the deltoid function in ______ of the glenohumeral joint

abduction

supraspinatus _________ the glenohumeral joint

abducts

the primary action of the pectoralis major is to ______ the glenohumeral joint

adduct

coracobrachialis causes ________ of the glenohumeral joint

adduction

pectoralis major causes ________ of the glenohumeral joint

adduction

the latissimus dorsi ________ the glenohumeral joint

adducts

Which is the only muscle of the forearm that acts on the humeroulnar joint? a. Brachialis b. Brachioradialis c. Palmaris longus d. Pronator teres e. Supinator

b. Brachioradialis

What is the small adductor muscle that antagonizes the deltoid? a. Brachioradialis b. Coracobrachialis c. Pectoralis minor d. Teres minor e. Teres major

b. Coracobrachialis

The muscles of the posterior forearm include: Select all that apply. a. brachialis b. brachioradialis c. coracobrachialis d. triceps brachii

b. brachioradialis

___________ are the two flexors of the elbow joint

brachialis and biceps brachii

the ________ is the only muscle within the antebrachium that acts on the elbow

brachioradialis

the _________ is another elbow flexor, but because more than half of this muscle lies in the antebrachium it is group with those muscles

brachioradialis

Which of these muscles is the deepest? a. Flexor carpi radialis b. Flexor carpi ulnaris c. Flexor digitorum superficialis d. Palmaris longus e. Pronator teres

c. Flexor digitorum superficialis

Considering the anterior head of the deltoid is attached to the claim, what motion is this part of the deltoid responsible for when contracting alone? a. abduction of the glenohumeral joint b. extension of the glenohumeral joint c. flexion of the glenohumeral joint d. lateral rotation of the glenohumeral joint

c. flexion of the glenohumeral joint

What deep humeral muscle functions as an antagonist to the coracobrachialis? a. infraspinatus b. subscapularis c. supraspinatus d. teres major e. teres minor

c. supraspinatus

the ______ is the adductor of the glenohumeral joint

coracobrachialis

Which of these muscles is not part of the rotator cuff? a. Infraspinatus b. Subscapularis c. Supraspinatus d. Teres major e. Terems minor

d. Teres major

The guard left the keys to your prison cell just out of reach. Which muscle would help you lengthen your reach. a. posterior part of the deltoid b. teres major c. teres minor d. serratus anterior e. serratus posterior

d. serratus anterior

the _______ consist of the rotator cuff muscles, the coracobrachialis, and the teres major

deep humeral muscles

_______ abducts the glenohumeral joint

deltoid

pectoralis major causes _______ of the scapula

depression

abductor pollicis longus results in abduction of ________

digit 1

extensor pollicis (longus and brevis) results in extension of _______

digit 1

extensor indicis results in extension of _______

digit 2

extensor digiti minimi results in extension of _______

digit 5

extensor digitorum results in extension of _______

digits 2-4

the deltoid, pectoralis major, and latissimus dorsi all have their ______ attachment on the humerus

distal attachment

Which of the scapular muscles is attached to the humerus? a. levator scapulae b. pectoralis minor c. rhomboids d. serratus anterior e. none of them

e. none of them

When carrying a heavy suitcase, you attempt to maintain your posture. Which muscle prevents your shoulder from sagging with the weight of the suitcase? a. deltoid b. pectoralis major c. pectoralis minor d. rhomboid major and minor e. trapezius

e. trapezius

levator scapulae causes ________ of the scapula

elevation

trapezius causes ________ of the scapula

elevation, depression, and retraction

the action of the portion originating from the costal cartilages in the pectoralis major would ________ the glenohumeral joint, particularly when the arm is initially raised

extend

the latissimus dorsi ________ the humerus as when rowing a boat

extends

the anconeus allows for _______ of the elbow

extension

the small anconeus muscle at the elbow assist the triceps in ________

extension

the triceps allows for ______ of the elbow

extension

latissimus dorsi causes ________ of the glenohumeral joint

extension and adduction

teres major causes ________ of the glenohumeral joint

extension and internal rotation

distally, the heads of the triceps form a common tendon that allows for ______

extension of the elbow joint

the superficial muscles in the posterior forearm moving from the brachioradialis medially are:

extensor carpi radialis, extensor digitorum, extensor digit minimi, and extensor carpi ulnaris

infraspinatus causes ________ of the glenohumeral joint

external rotation

teres minor causes ________ of the glenohumeral joint

external rotation

infrapspinatus and teres minor _______ the glenohumeral joint

externally rotates

there are two compartments in the brachium (upper arm) that are bordered by ________

fascia

the action of the portion originating from the clavicle in the pectoralis major would ______ the glenohumeral joint

flex

brachioradialis results in _______ of the elbow

flexion

the biceps brachii allows for _______ of the elbow

flexion

the brachialis allows for __________ of the elbow

flexion

the anterior and posterior heads of the deltoid can function alone in _______ of the glenohumeral joint

flexion and extension

_________ is a flat muscle that sends tendons to the phalanges and allows for their flexion

flexor digitorum superficialis

the largest of the anterior antebrachial muscles is the _________

flexor digitorum superficialis

muscles found in the ___________ largely act on the wrist and digits

forearm (antebrachium)

pronator teres results in pronation of the ______

hand

supinator results in supination of the _______

hand

the biceps brachii is named so for its two _______

heads

2 of the 3 heads of the triceps connect to the ________

humerus (the medial and lateral heads)

the various muscle fascicles in the pectoralis major are used ________ to provide the needed motion

independently

subscapularis causes ________ of the glenohumeral joint

internal rotation

the subscapularis ________ the glenohumeral joint

internally rotates

each group of muscles crosses a _______

joint

most extensors of the wrist attach to the ________

lateral condyle

since it attaches to the skull, each trapezius muscle can ______ the neck

laterally flex the neck

_______ is responsible for extension and adduction of the glenohumeral joint

latissimus dorsi

the _____ muscle evaluates the scapula

levator scapulae

most flexors of the wrist attach to the __________

medial epicondyle

muscles must a cross a joint to ______

move that joint

the _______ forms a very flexible connection to the body

pectoral girdle

________ is primarily an adductor of the glenohumeral (shoulder) joint

pectoralis major

the _____ lies deep to the pectoralis major and depresses the scapula

pectoralis minor

the _______ forearm compartment contains extensors of more distal joints

posterior

3 of the 4 rotator cuff muscles attach to the _______ (name the muscles)

posterior surface of the scapula Supraspinatus, infraspinatus, teres minor

serratus anterior causes ________ of the scapula

protraction

rhomboids (major and minor) causes ________ of the scapula

retraction

the ______ retract the scapula

rhomboids (major and minor)

four muscles originate at the scapula and insert to the proximal humerus, and these are the ______ muscles

rotator cuff muscles

the ______ muscles are a tendinous support that holds the humeral head within the shallow glenoid cavity of the scapula

rotator cuff muscles

the long head of the triceps extends to the ________

scapula

protraction of the scapula is produced by the _______

serratus anterior

the _________ can extend the reach of your arm, so it is often called the "boxer's muscle"

serratus anterior

the _______ is the single muscle of the rotator cuff that is within the sub scapular fossa and not attached to the posterior surface of the scapula

subscapularis

the ______ are large, powerful muscles that produce the major movements of the shoulder

superficial humeral muscles

the ______ include the deltoid, pectoralis major, and latissimus dorsi

superficial humeral muscles

the deep shoulder muscles are _______ to the superficial muscles, but they provide additional movements to the glenohumeral joint

synergists

the ______ is an extensor of the glenohumeral joint that also internally rotates the joint

teres major

flexor digitorum superficialis results in flexion of ______

the digits

_______ has a broad muscle attachment that spans from the head to the last thoracic vertebra

trapezius

the ________ fascicles travel to the scapula in several directions, capable of elevating, depressing, or retracting the scapula, depending on which part of the muscle is used

trapezius

the ________ muscles lies in the posterior compartment of the brachium

triceps

the muscles of the _______ are responsible for the movement of your scapula, shoulder, elbow, wrist, and fingers

upper limb

extensor carpi radialis (longus and brevis) results in extension of the ______

wrist

extensor carpi ulnaris results in extension of _______

wrist

flexor carpi radialis results in flexion of the _______

wrist

lateral flexion of the trapezius moves _____

your heard toward your ear