Muscles of the Axial Skeleton Flashcards
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Levator scapulae
- Action: Raises scapula
- Origin: Transverse process of C1-C4
- Insertion: Superior border of the scapula
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Levator scapulae
- Action: Raises scapula
- Origin: Transverse process of C1-C4
- Insertion: Superior border of the scapula
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Levator scapulae
- Action: Raises scapula
- Origin: Transverse process of C1-C4
- Insertion: Superior border of the scapula
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Sternohyoid
- Action:Depress larynx
- Origin: Manubrium & clavicle
- Insertion: Hyoid bone
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Levator scapulae
- Action: Raises scapula
- Origin: Transverse process of C1-C4
- Insertion: Superior border of the scapula
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Sternohyoid
- Action: Depress larynx
- Origin: Manubrium & clavicle
- Insertion: Hyoid bone
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Mylohyoid
- Action: Elevates hyoid bone during swallowing
- Origin: Medial mandible
- Insertion: Hyoid bone
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Mylohyoid
- Action: Elevates hyoid bone during swallowing
- Origin: Medial mandible
- Insertion: Hyoid bone
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Stylohyoid
- Action: Elevates and retracts hyoid bone
- Origin: Styloid process of temporal bone
- Insertion: Hyoid bone
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Stylohyoid
- Action:Elevates and retracts hyoid bone
- Origin: Styloid process of temporal bone
- Insertion: Hyoid bone
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Sternohyoid
- Action: Depress larynx
- Origin: Manubrium & clavicle
- Insertion: Hyoid bone
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Stylohyoid
- Action:Elevates and retracts hyoid bone
- Origin: Styloid process of temporal bone
- Insertion: Hyoid bone
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Digastrics
- Action: Elevates hyoid bone, open mouth, depress mandible
- Origin: Lower mandible & mastoid process
- Insertion: Hyoid bone
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Stylohyoid
- Action:Elevates and retracts hyoid bone
- Origin: Styloid process of temporal bone
- Insertion: Hyoid bone
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Digastrics
- Action: Elevates hyoid bone, open mouth, depress mandible
- Origin: Lower mandible & mastoid process
- Insertion: Hyoid bone
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Digastrics
- Action: Elevates hyoid bone, open mouth, depress mandible
- Origin: Lower mandible & mastoid process
- Insertion: Hyoid bone
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Digastrics
- Action: Elevates hyoid bone, open mouth, depress mandible
- Origin: Lower mandible & mastoid process
- Insertion: Hyoid bone
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Digastrics
- Action: Elevates hyoid bone, open mouth, depress mandible
- Origin: Lower mandible & mastoid process
- Insertion: Hyoid bone
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Scalenes
- Action: Flex & rotate neck, elevate ribs
- Origin: Transverse process of cervical vertebrae
- Insertion: Ribs 1 & 2
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Scalenes
- Action: Flex & rotate neck, elevate ribs
- Origin: Transverse process of cervical vertebrae
- Insertion: Ribs 1 & 2
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Sternocleidomastoid
- Action: Flex neck & rotate head
- Origin: Manubrium of sternum & clavicle
- Insertion: Mastoid process of temporal bone, superior to nuchal line of occipital bone
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Sternocleidomastoid
- Action: Flex neck & rotate head
- Origin: Manubrium of sternum & clavicle
- Insertion: Mastoid process of temporal bone, superior to nuchal line of occipital bone
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Sternocleidomastoid
- Action: Flex neck & rotate head
- Origin: Manubrium of sternum & clavicle
- Insertion: Mastoid process of temporal bone, superior to nuchal line of occipital bone
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Sternocleidomastoid
- Action: Flex neck & rotate head
- Origin: Manubrium of sternum & clavicle
- Insertion: Mastoid process of temporal bone, superior to nuchal line of occipital bone
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Platysma
- Action: Depress mandible
- Origin: Fascia of chest
- Insertion: Lower margin of mandible, skin & muscle of the corner of the mouth
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Platysma
- Action: Depress mandible
- Origin: Fascia of chest
- Insertion: Lower margin of mandible, skin & muscle of the corner of the mouth
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Platysma
- Action: Depress mandible
- Origin: Fascia of chest
- Insertion: Lower margin of mandible, skin & muscle of the corner of the mouth
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Latissimus dorsi
- Action: Arm extension, adduct & rotate arm
- Origin: Spinous process of T6-L5, iliac crest
- Insertion: Intertubercle sulcus of humerus
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Latissimus dorsi
- Action: Arm extension, adduct & rotate arm
- Origin: Spinous process of T6-L5, iliac crest
- Insertion: Intertubercle sulcus of humerus
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Latissimus dorsi
- Action: Arm extension, adduct & rotate arm
- Origin: Spinous process of T6-L5, iliac crest
- Insertion: Intertubercle sulcus of humerus
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Orbicularis oculi
- Action: Close eye lids
- Origin: Frontal & maxillary bones
- Insertion: Skin of eyelid
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Orbicularis oculi
- Action: Close eye lids
- Origin: Frontal & maxillary bones
- Insertion: Skin of eyelid
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Orbicularis oculi
- Action: Close eye lids
- Origin: Frontal & maxillary bones
- Insertion: Skin of eyelid
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Risorius
- Action: Draws corner of lip laterally
- Origin: Fascia of masseter
- Insertion: Skin at angle of mouth
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Risorius
- Action: Draws corner of lip laterally
- Origin: Fascia of masseter
- Insertion: Skin at angle of mouth
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Risorius
- Action: Draws corner of lip laterally
- Origin: Fascia of masseter
- Insertion: Skin at angle of mouth
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Orbicularis oris
- Action: Closes lips
- Origin: Maxilla & mandible
- Insertion: Skin of mouth
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Orbicularis oris
- Action: Closes lips
- Origin: Maxilla & mandible
- Insertion: Skin of mouth
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Orbicularis oris
- Action: Closes lips
- Origin: Maxilla & mandible
- Insertion: Skin of mouth
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Zygomaticus
- Action: Elevates corners of mouth
- Origin: Zygomatic bone
- Insertion: Skin & muscle at corners of mouth
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Zygomaticus
- Action: Elevates corners of mouth
- Origin: Zygomatic bone
- Insertion: Skin & muscle at corners of mouth
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Zygomaticus
- Action: Elevates corners of mouth
- Origin: Zygomatic bone
- Insertion: Skin & muscle at corners of mouth
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Zygomaticus
- Action: Elevates corners of mouth
- Origin: Zygomatic bone
- Insertion: Skin & muscle at corners of mouth
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Buccinator
- Action: Draws corn of lips laterally
- Origin: Molar region of mandible & maxillae
- Insertion: Orbicularis oris
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Buccinator
- Action: Draws corn of lips laterally
- Origin: Molar region of mandible & maxillae
- Insertion: Orbicularis oris
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Buccinator
- Action: Draws corn of lips laterally
- Origin: Molar region of mandible & maxillae
- Insertion: Orbicularis oris
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Depressor labii inferioris
- Action: Draws lower lip inferiorly
- Origin: Body of mandible
- Insertion: Skin & muscle at angle of lower lip
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Depressor labii inferioris
- Action: Draws lower lip inferiorly
- Origin: Body of mandible
- Insertion: Skin & muscle at angle of lower lip
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Depressor labii inferioris
- Action: Draws lower lip inferiorly
- Origin: Body of mandible
- Insertion: Skin & muscle at angle of lower lip
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Depressor anguli oris
- Action: Draws corners of mouth down & lateral
- Origin: Mandible
- Insertion: Skin & muscle at angle of mouth
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Depressor anguli oris
- Action: Draws corners of mouth down & lateral
- Origin: Mandible
- Insertion: Skin & muscle at angle of mouth
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Depressor anguli oris
- Action: Draws corners of mouth down & lateral
- Origin: Mandible
- Insertion: Skin & muscle at angle of mouth
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Mentalis
- Action: Protrudes lower lip
- Origin: Anterior mandible
- Insertion: Skin of chin
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Mentalis
- Action: Protrudes lower lip
- Origin: Anterior mandible
- Insertion: Skin of chin
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Mentalis
- Action: Protrudes lower lip
- Origin: Anterior mandible
- Insertion: Skin of chin
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Masseter
- Action: Elevate mandible
- Origin: Zygomatic arch & maxilla
- Insertion: Angle & ramus of mandible
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Masseter
- Action: Elevate mandible
- Origin: Zygomatic arch & maxilla
- Insertion: Angle & ramus of mandible
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Masseter
- Action: Elevate mandible
- Origin: Zygomatic arch & maxilla
- Insertion: Angle & ramus of mandible
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Masseter
- Action: Elevate mandible
- Origin: Zygomatic arch & maxilla
- Insertion: Angle & ramus of mandible
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Temporalis
- Action: Elevate & retract mandible
- Origin: Temporal fossa
- Insertion: Coronoid process of mandible
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Temporalis
- Action: Elevate & retract mandible
- Origin: Temporal fossa
- Insertion: Coronoid process of mandible
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Temporalis
- Action: Elevate & retract mandible
- Origin: Temporal fossa
- Insertion: Coronoid process of mandible
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Trapezius
- Action: Extend neck; raise, rotate, & adduct scapula
- Origin: Occipital bone & spinous of C7 & process of thoracic vertebrae
- Insertion:Acromion & spine of scapula, lateral third of clavicle
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Trapezius
- Action: Extend neck; raise, rotate, & adduct scapula
- Origin: Occipital bone & spinous of C7 & process of thoracic vertebrae
- Insertion:Acromion & spine of scapula, lateral third of clavicle
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Trapezius
- Action: Extend neck; raise, rotate, & adduct scapula
- Origin: Occipital bone & spinous of C7 & process of thoracic vertebrae
- Insertion:Acromion & spine of scapula, lateral third of clavicle
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Transversus abdominis
- Action: Compress abdominal contents
- Origin: Ribs 6-12 (cartilage), inguinal ligament, lumbar fascia
- Insertion: Pubic crest, linea alba
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Transversus abdominis
- Action: Compress abdominal contents
- Origin: Ribs 6-12 (cartilage), inguinal ligament, lumbar fascia
- Insertion: Pubic crest, linea alba
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Internal oblique
- Action: Flex & rotate vertebral column, trunk rotation, & lateral flexion
- Origin Iliac crest, inguinal ligament, lumbar fascia
- Insertion: Ribs 9-12 (cartilage), linea alba, pubic crest
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Transversus abdominis
- Action: Compress abdominal contents
- Origin: Ribs 6-12 (cartilage), inguinal ligament, lumbar fascia
- Insertion: Pubic crest, linea alba
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Internal oblique
- Action: Flex & rotate vertebral column, trunk rotation, & lateral flexion
- Origin Iliac crest, inguinal ligament, lumbar fascia
- Insertion: Ribs 9-12 (cartilage), linea alba, pubic crest
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External oblique
- Action: Flex & rotate vertebral column, trunk rotation & lateral flexion
- Origin: Pubic crest & symphysis
- Insertion: Xiphoid process & ribs 5-7 (cartilage)
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External oblique
- Action: Flex & rotate vertebral column, trunk rotation & lateral flexion
- Origin: Pubic crest & symphysis
- Insertion: Xiphoid process & ribs 5-7 (cartilage)
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External oblique
- Action: Flex & rotate vertebral column, trunk rotation & lateral flexion
- Origin: Pubic crest & symphysis
- Insertion: Xiphoid process & ribs 5-7 (cartilage)
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External oblique
- Action: Flex & rotate vertebral column, trunk rotation & lateral flexion
- Origin: Pubic crest & symphysis
- Insertion: Xiphoid process & ribs 5-7 (cartilage)
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Rectus abdominis
- Action: Flex & rotate the vertebral column
- Origin: Pubic crest & symphysis
- Insertion: Xiphoid process & ribs 5-7 (cartilage)
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Rectus abdominis
- Action: Flex & rotate the vertebral column
- Origin: Pubic crest & symphysis
- Insertion: Xiphoid process & ribs 5-7 (cartilage)
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Diaphragm
•Action: Prime mover of inspiration, flattens when contracts, lengthens thoracic cavity
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Diaphragm
•Action: Prime mover of inspiration, flattens when contracts, lengthens thoracic cavity
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Diaphragm
•Action: Prime mover of inspiration, flattens when contracts, lengthens thoracic cavity
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Diaphragm
•Action: Prime mover of inspiration, flattens when contracts, lengthens thoracic cavity
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Internal intercostal
- Action: Depress the ribcage, aid in inspiration
- Origin: Superior border of rib below
- Insertion: Inferior border of rib above
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Internal intercostal
- Action: Depress the ribcage, aid in inspiration
- Origin: Superior border of rib below
- Insertion: Inferior border of rib above
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Internal intercostal
- Action: Depress the ribcage, aid in inspiration
- Origin: Superior border of rib below
- Insertion: Inferior border of rib above
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External intercostals
- Action: Elevate ribcage, aid in inspiration
- Origin: Inferior border of rib above
- Insertion: Superior border of rib below
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External intercostals
- Action: Elevate ribcage, aid in inspiration
- Origin: Inferior border of rib above
- Insertion: Superior border of rib below
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External intercostals
- Action: Elevate ribcage, aid in inspiration
- Origin: Inferior border of rib above
- Insertion: Superior border of rib below
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External intercostals
- Action: Elevate ribcage, aid in inspiration
- Origin: Inferior border of rib above
- Insertion: Superior border of rib below
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Serratus Anterior
- Action: Move scapula forward, rotate scapula
- Origin: Ribs 1-8
- Insertion: Medial border of scapula
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Serratus Anterior
- Action: Move scapula forward, rotate scapula
- Origin: Ribs 1-8
- Insertion: Medial border of scapula
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Serratus Anterior
- Action: Move scapula forward, rotate scapula
- Origin: Ribs 1-8
- Insertion: Medial border of scapula
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Serratus Anterior
- Action: Move scapula forward, rotate scapula
- Origin: Ribs 1-8
- Insertion: Medial border of scapula
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Pectoralis Minor
- Action: Elevates upper ribs
- Origin: Ribs 3-5
- Insertion: Coracoid process
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Pectoralis Minor
- Action: Elevates upper ribs
- Origin: Ribs 3-5
- Insertion: Coracoid process
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Pectoralis Minor
- Action: Elevates upper ribs
- Origin: Ribs 3-5
- Insertion: Coracoid process
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Epicranius
Occipitalis
- Action: Pulls scalp posteriorly
- Origin: Occipital bone
- Insertion: Aponeurosis
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Epicranius
Occipitalis
- Action: Pulls scalp posteriorly
- Origin: Occipital bone
- Insertion: Aponeurosis
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Epicranius Frontalis
Frontalis (frontal body)
- Action: Raises eyebrows
- Origin: Aponeurosis
- Insertion: Skin of eyebrows
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Epicranius Frontalis
Frontalis (frontal body)
- Action: Raises eyebrows
- Origin: Aponeurosis
- Insertion: Skin of eyebrows
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Erector Spinae;
Longissimus, iliocostalis, spinalis
- •Action: As a pair: extend neck & vertebral column
- Origin: Iliac crest & transverse process of C7-T12
- Insertion: Occipital bone & spinous process of cervical vertebrae
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Erector Spinae;
Longissimus, iliocostalis, spinalis
- Action: As a pair: extend neck & vertebral column
- Origin: Iliac crest & transverse process of C7-T12
- Insertion: Occipital bone & spinous process of cervical vertebrae
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Erector Spinae
Iliocostalis
- Action: As a pair: extend neck & vertebral column
- Origin: Iliac crest & transverse process of C7-T12
- Insertion: Occipital bone & spinous process of cervical vertebrae
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Erector Spinae
Longissimus
- Action: As a pair: extend neck & vertebral column
- Origin: Iliac crest & transverse process of C7-T12
- Insertion: Occipital bone & spinous process of cervical vertebrae
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Erector Spinae
Spinalis
- Action: As a pair: extend neck & vertebral column
- Origin: Iliac crest & transverse process of C7-T12
- Insertion: Occipital bone & spinous process of cervical vertebrae