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anatomy lab quiz 3
ya
30
Anatomy
Undergraduate 2
02/25/2010

Additional Anatomy Flashcards

 


 

Cards

Term
muscle name
Definition

origin

insertion

action

Term
Orbicularis oculi
Definition

Medial aspect of bony orbit

 

Skin around eyelids

 

Closes eyelid; acts during squinting and blinking

Term
Orbicularis oris
Definition

Maxillary bone; mandible

 

Lips

 

Closes and protrudes lips as in speaking, kissing, and whistling

Term
Masseter
Definition

Zygomatic arch

 

Lateral surface of mandibular ramus

 

Elevates mandible to close jaw; protrudes mandible

Term
Temporalis
Definition

Temporal bone

 

Coronoid process of mandible

 

Elevates mandible to close jaw; retrudes mandible

Term
Sternocleidomastoid
Definition

insertion?

 

Mastoid process; occipital bone near mastoid process

 

Flexion and lateral flexion of neck; rotates head so that face is turned superiorly and to the opposite side

Term
Levator Scapulae
Definition

Transverse processes of superior four cervical vertebrae

 

Medial border of scapula near superior angle

 

Elevates scapula; inferior rotation of scapula

Term
External intercostals
Definition

Inferior border of superior rib

 

Superior border of inferior rib

 

Elevates the ribs during normal inspiration

Term
Internal Intercostals
Definition

Superior border of inferior rib

 

Inferior border of superior rib

 

Depresses the ribs during forced expiration

Term
External Oblique
Definition

External surfaces of inferior eight ribs

 

Linea alba; pubic crest; pubic tubercle; iliac crest

 

Rotation and lateral flexion of trunk; increases intraabdominal pressure during forced expiration

Term
Interal Oblique
Definition

Thoracolumbar fascia; iliac crest; inguinal ligament

 

Linea alba; pubic crest; inferior three or four ribs

 

Rotation and lateral flexion of trunk; increases intraabdominal pressure during forced expiration

Term
Pectoralis Major
Definition

Medial half of clavicle; sternum; costal cartilages of ribs 1-6

 

Lateral lip of intertubercular groove on humerus

 

Flexion, medial rotation, and adduction of the arm

Term
Pectoralis Minor
Definition

External surfaces of ribs 3-5

 

Coracoid process of scapula

 

Depression and inferior rotation of scapula

Term
Serratus Anterior
Definition

External surfaces of ribs 1-8

 

Medial border of scapula

 

Protraction and superior rotation of scapula; holds scapula against thoracic wall

Term
Latissimus dorsi
Definition

Spinous processes of vertebrae T6-T12; thoracolumbar fascia; iliac crest; inferior three ribs

 

Intertubercular groove of humerus

 

Extension, adduction, and medial rotation of arm

Term
Trapezius
Definition

Posterior surface of occipital bone; ligamentum nuchae; spinous processes of thoracic vertebrae

 

Lateral third of clavicle; acromion process; spine of scapula

 

scapula    Middle fibers: retract scapula Inferior fibers: depress scapula

Term
Deltoid
Definition

Lateral third of clavicle; acromion process; spine of scapula

 

Deltoid tuberosity of humerus

 

and flexion of arm Middle fibers: abduction of arm Posterior fibers: lateral rotation and extension of arm

Term
Rhomboid minor
Definition

ligamentum nuchae; spinous processes of vertebrae C7 and T1

 

Medial border of scapula

 

Elevates scapula; acts with pectoralis minor to inferiorly rotate scapula; also retracts scapula

Term
Teres Major
Definition

Scapula, near inferior angle

 

Medial lip of intertubercular groove

 

Extension, adduction, and medial rotation of arm

Term
Supraspinatus
Definition

Supraspinous fossa of scapula

 

Greater tubercle of humerus

 

Abduction of arm

Term
Infraspinatus
Definition

Infraspinous fossa of scapula

 

Greater tubercle of humerus

 

Lateral rotation of arm

Term
Teres Minor
Definition

Lateral border of scapula

 

Greater tubercle of humerus

 

Lateral rotation of arm

Term
Subscapularis
Definition

Subscapular fossa of scapula

 

Greater tubercle of humerus

 

Adduction and medial rotation of arm

Term
Biceps Brachii
Definition

Long head : superior margin of glenoid fossa of scapula Short head : coracoid process of scapula

 

Radial tuberosity of radius; fascia of medial forearm via bicipital aponeurosis

 

Flexion and supination of forearm; flexion of arm

Term
Brachialis
Definition

Anterior surface of humerus

 

Coronoid process of ulna

 

Flexion of forearm

Term
Coracobrachialis
Definition

Coracoid process of scapula

 

Medial surface of humerus

 

Flexion and adduction of arm

Term
Triceps Brachii
Definition

Long Head :    inferior margin of glenoid fossa of scapula Lateral Head :    posterior surface of humerus
Medial Head :    posterior surface of humerus, inferior to origin of lateral head

 

Olecranon process of ulna

 

Extension of forearm; long head extends and adducts arm

Term
Pronator Teres
Definition

Medial epicondyle of humerus; coronoid process of ulna

 

Lateral surface of radius

 

Pronation and flexion of the forearm

Term
Brachioradialis
Definition

Lateral supracondylar ridge of humerus

 

Lateral surface of distal radius

 

Flexion of forearm

Term
Supinator
Definition

Lateral epicondyle of humerus; proximal ulna

 

Posterior, lateral, and anterior surfaces of proximal radius

 

Supination of the forearm

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