Superior Muscles Flashcards by erika lofton

Platysma

Depresses lower lip

Depresses angle of the mouth

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Adductor pollicis

Adducts digit 1

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Omohyoid

Depresses hyoid

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Sternohyoid

Depresses hyoid

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Sternothyroid

Depresses larynx

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Internal Intercostals

Depresses ribs during forced exhalation

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Subclavius

Depresses clavicle

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Transversus thoracis

Depresses ribs during exhalation (weak)

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Occipitofrontalis

Elevates eyebrows

Retracts the scalp

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Zygomaticus major

Elevates angle of the mouth

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Zygomaticus minor

Elevates upper lip

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Temporalis

Elevates mandible

Retracts mandible

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Masseter

Elevates mandible

Protracts mandible

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External Intercostals

Elevates ribs during inhalation

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Scalene muscles

Elevates ribs 1 - 2 during forced inspiration

Laterally flexes neck

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Levator scapulae

Elevates scapula

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Orbicularis Oculi

Closes eyelids (blinking)

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Orbicularis oris

Closes lips

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Rhomboid minor

Retracts scapula

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Rhomboid major

Retracts scapula

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Pronator teres

Probated forearm

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Pronator quadratus

Pronation forearm

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Rectus Abdominis

Flexes vertebral column

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Biceps brachii

Flexes elbow

Supinates forearm

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Brachialis

Flexes elbow

Palmaris Longus

Flexes wrist

Flexor digitorum superficialis

Flexes digits 2-5

Flexor digitorum profundus

Flexes digits 2-5

Flexor pollicis Longus

Flexes digit 1

Flexor pollicis brevis

Flexes digit 1

Supraspinatus

Abducts shoulder

Abductor pollicis Longus

Abducts digit 1

Abductor pollicis brevis

Abducts digit 1?

Abductor digiti minimi

Abducts digit 5

Extensor digiti minimi

Extends digit 5

Triceps brachii

Extends elbow

Anconeus

Extends elbow

Extensor pollicis brevis

Extends digit 1

Extensor pollicis Longus

Extends digit 1

Extensor digitorum

Extends digits 2-5

Extensor indicis

Extends digit 2

Splenius capitis

Bilateral - extends neck Unilateral - laterally flexes neck and rotates head to same side

Semispinalis capitis

Bilateral - extends neck Unilateral - rotates head to opposite side

Sternocleidomastoid

Bilateral - flexes neck Unilateral - rotates head to opposite side

External oblique

Bilateral - flexes vertebral column Unilateral - rotates vertebral column

Internal oblique

Bilateral - flexes vertebral column Unilateral - rotates vertebral column

Erector spinae

Bilateral - extends neck and vertebral column Unilateral. - laterally flexes and rotates vertebral column

Multifidus

Bilateral - extends vertebral column Unilateral - laterally flexes and rotates vertebral column

Serratus anterior

Protracts scapula

Pectoralis minor

Protracts scapula

Epidermis

Physical barrier for protection of underlying structures

Dermis

Protect against trauma Contains appendages of skin

Dermal papilla

Forms ridges on fingers Fingerprints

Hypodermis

Separates skin from deep fascia A.k.a. Subcutaneous layer and superficial layer

Hair follicle

Decrease heat loss

Arrector pilli muscle

Hair follicles become erect when the body is under stress Goosebumps

Sweat (sudoriferous) gland

Produces sweat in response to heat or stress

Oil (sebaceous ) gland

Not found in skin of palms or soles of foot

Epicranial aponeurosis

Sheet-like tendon connecting the anterior and posterior muscle bellies of the occipitofrontalis

Thyrohyoid

Elevates larynx Depresses hyoid

Digastric

Depresses mandible Elevates hyoid

Rectus sheath

Formed by the aponeurosis of the abdominal wall

Pectoralis major

Flexes shoulder Adducts shoulder Medially rotates shoulder

Trapezius

Elevates scapula Protracts scapula Depresses scapula

Latissimus Dorsi

Adducts shoulder Extends shoulder Medially rotates shoulder

Deltoid

Flexes shoulder Abducts shoulder Extends shoulder

Infraspinatus

Laterally rotates shoulder

Teres minor

Laterally rotates shoulder

Subscapularis

Medially rotates shoulder

Teres major

Adducts shoulder Extends shoulder Medially rotates shoulder

Coracobrachialis

Flexes shoulder | Adducts shoulder

Flexor carpi radialis

Flexes wrist Radial deviation (abduction) of wrist

Flexor carpi ulnaris

Flexes wrist Ulnar deviation (adduction) of wrist

Brachioradialis

Flexes elbow Pronates forearm Supinates forearm

Extensor carpi radialis Longus

Extends wrist Radial deviation (abduction) of wrist

Extensor carpi radialis brevis

Extends wrist Radial deviation (abduction) of wrist

Extensor carpi ulnaris

Extends wrist Ulnar deviation (adduction) of wrist

Lumbricals

Flexes digits 2-5 | Extends digits 2-5

Diaphragm

Increases thoracic cavity dimension during inspiration

Buccinator

Compresses cheeks

Transverse Abdominis

Compresses anterior abdominal wall

Supinator

Supinates forearm

Superior Muscles Flashcards

(82 cards)