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Muscles
Muscles of the thorax, upper limbs
34
Anatomy
Undergraduate 1
10/10/2012

Additional Anatomy Flashcards

 


 

Cards

Term
N Trapezius
Definition

O- Occipital bones, spines of C7 and all thoracic vertebrae

I- Spine and acromion of scapula

A- Extends, elevates, rotates, and retracts scapula; secondary: extends head

Term
N Latissimus dorsi
Definition

O- Lower 6 thoracic vertebrae, lumbar vertebrae, iliac crest

I- Intertubercular sulcus of humerus

A-Extends, adducts, and medially rotates arm

 

 

Term
N serratus anterior
Definition

O- Ribs 1-8

I- anterior aspect of medial border of scapula

A- Boxer's muscle (protracts and laterally rotates scapula)

Term

N Pectoralis minor

 

Definition

O- Ribs 3, 4 ,5

I- coracoid process of scapula

A- draws scapula anteriorly and inferiorly

Term
N- Rhomboids (minor and major)
Definition

O-Spinois process of C7-T5

I- Medial border of scapula

A- stablizes scapula

Term
N- External intercostals
Definition

A- Raises ribs for inspiration

Term
N- Internal intercostals
Definition

A- Depresses ribs for forced expiration

Term
N- Diaphragm
Definition

O- Costal cartilages of lowest ribsm lumbar vertebrae

I-central tenton

A- primer muscle of inspiration

 

Phrenic nerves- c3, c4, c5

Term
N- Supraspinatus
Definition

O- Supraspinous fossa of scapula

I- Greater tubercle of humerus

A- Abducts and stablizes arm

Term
N- Infraspintatus
Definition

N- Infraspinatus

O- Infraspinous fossa of the scapula

I- Greater tubercle of the humerus

A- laterally rotates arm

Term
N- Subscapularis
Definition

O- Subscapular fossa of the scapula

I- Lesser tubercle of the humerus

A- medially rotates arm and stabilizes shoulder joints

Term
Which muscles stablize the scapula? Which muscles stablizes the shoulder joint?
Definition
The rhomboids and the supraspinatus both stabilize the scapula and the subscapularis stabilizes the shoulder joint
Term
What nerve runs through the diaphragm?
Definition
The phrenic nerves- c3, c4, c5
Term
What are the rotator cuffs?
Definition

SITS

Supraspinatus, infraspinatus, teres minor, and subscapularis

Term
N- Teres major
Definition

O- posterior surface of the inferior angel of scapula

I- lesser tubercle of the humerus

A- synergist to the latissimus dorsi (extends, elevates, and rotates arm)

 

Term
N- Teres minor
Definition

O- lateral border of scapula

I- greater tubercle of humerus

A- lateral rotation of humerus

Term
N- Pectoralis major
Definition

O- clavicle, sternum, and costal cartilages

I- intertubercular sulcus of humerus

A- flexes, adducts, and medially rotates arm

Term
N- Deltoid
Definition

O- clavicle, spine and acromion of scapula

I- deltoid tuberosity of humerus

A- Abducts arm

Term
N- Biceps brachii
Definition

O- coracoid process and supraglenoid tubercle of the humerus

I- radial tuberosity

A- flexes elbow and supinates forearm

Term
N- Brachialis
Definition

O-Distal anterior humerus

I-coronoid process of humerus

A- flexes forearm

Term
N- Brachoradialis
Definition

O-Lateral supracondylar ridge

I-styloid process of radius

A- flexes forearm

Term
N- Triceps brachii
Definition

O- Infraglenoid tubercle of the scapula and posterior humerus

I- Olecranon process of the ulna

A- extends forearm

Term
What muscles flexes the elbow? Flexes the forearm? Extends the forearm?
Definition

Biceps brachii flexes the elbow and supinates the forearm

Brachialis and brachioradialis both flexes the forearm

Triceps brachii extends the forearm

Pronator teres flexes the forearm and pronates the forearm

Term
N- Pronator teres
Definition

O- Medial epicondyle of humerus

I- Lateral radius

A- Pronates and flexes the forearm

Term
N- Flexor carpi radialis
Definition

O- medial epicondyle of humerus

I- base of 2nd and 3rd metacarpal

A- flexes wrists and abducts hand

Term
N- Palmaris longus
Definition

O- medial epicondyle of the humerus

I- palmar aponeurosis

A- tenses skin and fascia of palm, weakest flexer of the wrist

Term
N- Flexor carpi ulnaris
Definition

O- medial epicondyle of the humerus

I- 5th metacarpal

A- flexes wrist and adducts hand

Term
N- Extensor carpi radialis
Definition

O- lateral epicondyle and supracondylar ridge of humerus

I- 2nd and 3rd metacarpals

A- extends wrist and abducts wrist

Term
N- Extensor digitorum
Definition

O- lateral epicondyle of humerus

I- digit 2-5

A- extends fingers and wrist; abducts fingers

 

Term
N- Extensor digiti minimi
Definition

A- Extends 5th digit

Term
N- Extensor carpi ulnaris
Definition

O- Lateral epicondyle of humerus

I- 5th metacarpal

A- extends wrist and adducts wrist

Term
N- Abductor pollicis longus
Definition

A- Abducts and extends thumb

Term
N- Extensor pollicis brevis
Definition

A- extends thumb

Term
N- Extensor pollicis longus
Definition

A- Extends thumb

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