MUSCLES Flashcards by Drew Barretto

What is the origin and insertion of the Epicranius/Frontal Belly?

Galea aponuerotica, Skin of Eyebrows

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What does the Epicranius do?

Raises Eyebrows

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What is the origin and insertion of ORBICULARIS OCULI?

Frontal Bone/Maxilla, Skin around eyelids

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What does the ORBICULARIS OCULI do?

Closes eyes (squint, blink, wink)

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What is the origin and insertion of the ORBICULARIS ORIS?

Maxilla/Mandible, muscle and skin around mouth

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What does the ORBICULARIS ORIS do?

“Kissing” muscle

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What is the origin and insertion of the ZYGOMATICUS?

Zygomatic bone, skin and muscle at corner of lips

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What does the zygomaticus muscle do?

Raises corner of mouth (smiling) - ZMYLE LIKE A ZYCHO

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What is the origin and interaction of PLATYSMA?

Fascia over chest, mandible/skin at mouth

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What does PLATSYMA muscle do?

tenses skin of neck (like while shaving)

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What is the origin and insertion of the TEMPORALIS?

Temporal bone, mandible

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What is the action of the temporalis?

Closes jaw

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What is the origin and insertion of the MASSETER?

Temporal bone, Mandible

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What is the action of the MASSETER?

Prime mover of jaw closure

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What is the origin and insertion of the STERNOCLEIDOMASTOID?

Sternum/Clavivle, temporal bone

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What is the action of the STERNOCLEIDOMASTOID muscle?

Bilateral - neck flexion (bowing head)

Unilateral - rotate head (same side as contraction)

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What is the origin and insertion of RECTUS ABDOMINIS?

Pubis, lower costal cartilages/xiphoid process

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What is the action of the RECTUS ABDOMINIS?

Bilateral contraction, flexes spine (situps)

Unilateral - rotates spine to same side of muscle being contracted

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What is the origin and insertion of the EXTERNAL ABDOMINAL OBLIQUE?

Lower ribs, Illium/pubis/Linea alba

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What is the action of the OBLIQUES?

Compress abdominal contents, rotates and flexes spine

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What is the origin and insertion of the INTERNAL ABDOMINAL OBLIQUE?

Lumbodorsal fascia/illium, lower ribs/linea alba/pubis

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What is the origin and insertion of TRANSVERSUS ABDOMINIS?

Lower costal cartilage/lumbodorsal fascia/ illium, linea alba/pubis

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What is the origin and insertion of the TRAPEZIUS?

Occipital bone/cervical and thoracic vertebrae, clavicle/scapula

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What does the TRAPEZIUS do?

Raises scapula (shrugging shoulders, extending head)

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What is the origin and insertion of LATISSIMUS DORSI?

Lower vertebrae/illium, humerus

What is the action of the LATISSIMUS DORSI?

Prime mover for arm extension

What is the origin and insertion of the internal intercostal?

Ribs, Ribs

What do the internal intercostal do?

Ribs - depression

What are is the origin and insertion of the external intercostals?

Ribs, ribs

What do the external intercostals do?

Ribs - elevation

What is the origin and insertion of the PECTORALIS MINOR?

Ribs 3-5, scapula

What are the actions of the PECTORALIS MINOR?

Protraction and downward rotation of scapula

What is the origin and insertion of SERRATUS ANTERIOR?

Ribs 1-9, scapula

What are the actions of the SERRATUS ANTERIOR?

Rotates scapula upward

What is the origin and insertion of LEVATOR SCAPULAE?

Cervical vertebrae, scapula

What are the actions of LEVATOR SCAPULAE?

Elevation and addiction of scapula

What are the origin and insertion of RHOMBOIDEUS MINOR AND MAJOR?

Cervical and thoracic vertebrae, scapula

What are the actions of RHOMBOIDEUS MUSCLES?

Retract scapula, rotate scapula downward

What are the origin and insertion of PECTORALIS MAJOR?

Cervical/Sternum, Humerus

What are the actions of the PECTORALIS MAJOR?

Arm flexion, rotate arm medially

What are the origin and insertion of TERES MAJOR?

Scapula, Humerus

What are the actions of TERES MAJOR?

Arm extension, Arm Adduction

What are the origin and insertion of INFRASPINATUS?

Scapula, Humerus

What are the actions of INFRASPINATUS?

Lateral rotation of arm

What are the origin and insertion of TRICEPS BRACHII?

Scapula (long head)/Humerus (medial and lateral heads), Ulna

What are the actions of TRICEP BRACHII?

Elbow extension

What are the origin and insertion of BICEP BRACHII?

Scapula, Radius

What are the actions of BICEPS BRACHII?

Elbow flexion, forearm supination

What are the origin and insertion of BRACHIALIS?

Humerus, Ulna

What are the actions of BRACHIALIS?

Prime mover of forearm flexion at elbow

What are the origin and insertion of BRACHIORADIALIS?

Humerus, Radius

What are the actions of BRACHIORADIALUS?

Forearm flexion at elbow

What are the origin and insertion of FLEXOR CARPI RADIALIS?

Humerus, Metacarpals 2-3

What are the actions of FLEXOR CARPI RADIALIS?

Hand flexion and ABduction at wrist

What are the origin and insertion of PALMARIS LONGUS?

Humerus, Palmar aponeurosis

What are the action of PALMARIS LONGUS?

Weak wrist flexor, tenses skin of palm

What are the origin and insertion of FLEXOR CARPI ULNARIS?

Humerus/Ulna, Pisiform/Hamate/Metacarpal 5

What are the actions of FLEXOR CARPI ULNARIS?

Hand flexion and ADduction

What are the origin and insertion of FLEXOR DIGITORUM SUPERFICIALIS?

Humerus/Ulna/Radius, Middle phalanges of fingers 2-5

What are the actions of FLEXOR DIGITORUM SUPERFICIALIS?

Flexing wrist, flexing middle phalanges

WhatWhat are the origin and insertion of EXTENSOR CARPI RADIALIS?

Humerus, Metacarpal 2-3

What are the actions of EXTENSOR CARPI RADIALIS?

Extends and abducts the wrist

What are the origin and insertion of EXTENSOR CARPI ULNARIS?

Humerus/Ulna, Metacarpal 5

What are the actions of EXTENSOR CARPI ULNARIS?

Hand extension and ADduction at wrist

What are the origin and insertion of the illiacus?

Illium/Sacrum, Femur

What are the actions of illiacus?

Thigh flexion at hip joint

What are the origin and insertion of the psoas?

Lower vertebrae, femur

What are the action of the psoas?

Thigh flexion

What are the origin and insertion of TENSOR FASCIAE LATAE?

Illium, illiotibial tract

What are the actions of TENSOR FASCIAE LATAE?

Thigh ABduction an medial rotation of thigh

What are the origin and insertion of SARTORIUS?

Illium, Tibia

What are the actions of SARTORIUS?

Thigh flexion and ABduction at hip joint

What are the origin and insertion of RECTUS FEMORIS?

Illium, patella

What are the actions of RECTUS FEMORIS?

Extends knee and flexes thigh

What are the origin and insertion of VASTUS LATERALIS?

Femur, Patella

What are the actions of VASTUS LATERALIS?

Thigh flexion

What are the origin and insertion of VASTUS MEDIALIS?

Leg extension at knee joint

What are the origin and insertion of PECTINEUS?

Pubic bone, femur

What are the actions of PECTINEUS?

Thigh flexion

What are the origin and insertion of GRACILIS?

Pubic bone, femur

What are the actions of GRACILIS?

Thigh ADuction

What are the actions of ADDUCTOR MAGNUS?

Thigh ADduction at Hip

What are the origin and insertion of ADDUCTOR MAGNUS?

Pubis/Ischium, Femur

What are the actions of ADDUCTOR LONGUS?

Thigh Adduction

What are the origin and insertion of ADDUCTOR LONGUS?

Pubis, Femur

What are the actions of GLUTEUS MAXIMUS?

Thigh extension (rising from sit)

What are the origin and insertion of GLUTEUS MAXIMUS?

Sacrum/Coccyx/ilium, femur

What are the actions of BICEPS FEMORIS?

Extend thigh (at hip), flex leg (at knee)

What are the origin and insertion of BICEPS FEMORIS?

Ischium/Femur, Fibula/tibula

What are the actions of SEMITENDINOSUS?

Extend thigh

What are the origin and insertion of SEMITENDINOSUS?

Ischium/Tibia

What are the actions of SEMIMEMBRANOSUS?

Extend thigh

What are the origin and insertion of SEMIMEMBRANOSUS?

Ischium, Femur/Tibia

What are the actions of TIBIALIS ANTERIOR?

Prime Dorsiflexion of foot

What are the origin and insertion of TIBIALIS ANTERIOR?

Tibia, Cuneiform/Metatarsal 1

What are the actions of FIBULARIS?

Dorsiflexion of foot

What are the origin and insertion of FIBULARIS?

Fibula, Metatarsal 5

What are the actions of GASTROCNEMIUS?

Plantar flexion of foot (tip-toeing)

What are the origin and insertion of GASTROCGNEMIUS?

Femur, Calcaneus

What are the actions of SOLEUS?

Plantar flexion of foot (tip-toe)

What are the origin and insertion of SOLEUS?

Tibia/Fibula, Calcaneus