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Back
insertions, origins, functions and innervations of back muscles
20
Anatomy
Professional
10/07/2011

Additional Anatomy Flashcards

 


 

Cards

Term
Trapezius
Definition

O: Occipital protuberance

I: clavicle, spine os scapula

N: Motor- accessory nerve

F: assists in rotating scapula during abduction of humerus

Term
Latissimus dorsi
Definition

O: Thoracic/ lumber vertebrae, iliac crest, ribs X-XII

I: intertubercular sulcus of humerus

N: Thoracodorsal nerve

F: Extends, adducts and medially rotates humerus

 

 

Term
Levator scapulae
Definition

O: Cervical vertebra

I: medial border of scapula

N: Cervical vertebra and dorsal scapular nerve

F: elevates scapula

Term
Rhomboid major
Definition

O: thoracic vertebrae

I: medial border of scapula

N: Dorsal scapular nerve

F: Adducts and elevates scapula

Term
Rhomboid minor
Definition

O: C VII and TI

I: Medial border of scapula

N: Dorsal scapular

F: Adducts and elevates scapula

Term
Serratus posterior superior
Definition

O: Ligamentum nuchae

I: Upper border of ribs II-V

N: Anterior rami of lower thoracic nerves

F: Elevates ribs II-V

Term
Serratus posterior inferior
Definition

O: TXI- LIII

I: Ribs IX- XII

N: Thoracic nerves: T9-T12

F: depresses ribs IX-XII

Term
Splenius capitis
Definition

O: Ligamentum nuchae, CVII- TIV

I: Mastoid process

N: Lower cervical nerves

F: Draw head backward, extend neck, draw and rotate head to one side

 

Term
Splenius cervicis
Definition

O: Thoracic vertebra

I: Cervical vertebra

N: Lower cervical nerves

F: Extend neck, draw and rotate head to one side.

 

Term
Erector Spinae
Definition
Iliocostalis(most lateral), Longissimus (mid), and Spinalis (most medial)
Term
Iliocostalis
Definition

O: Sacrum, lumbar and thoracic vertebra, iliac crest, and lower ribs

I: ribs and cervical vertebrae

Term
Longissimus
Definition

O: Transverse processes of cervical, thoracic and lumbar vertebra

I: Thoracic and cervical vertebrae and mastoid process

Term
Spinalis
Definition

O: Ligamentum nuchae and thoracic vertebra

I: axis and thoracic vertebra

Term
Semispinalis
Definition

O: Cervical and Transverse processes

I: Thoracic and cervical vertebrae and medial portion of occipital bones

Term
Multifidus
Definition
O: Sacrum, iliac spine, lumbar, cervical and thoracic vertebrae
Term
Rotatores
Definition

O: Lumbar, thoracic and cervical

I: spinous processes of lumbar, thoracic and cervical vertebrae

Term
Segmental back muscles: Levatores costarum
Definition

O: Cervical and thoracic vertebrae

I: rib below vertebra origin

F: Elevates rib

 

Term
Segmental back muscles: Interspinales
Definition
O: short paired muscles of contigious vertebrae (whatever that means)
F: Postural muscles, stabilize adjoining vertebra during movements of vertebral column
Term
Intertransverarii
Definition
O: small muscles between contiguous vertebra
I:Postural muscles, stabilize adjoining vertebra during movements of vertebral column
Term
Suboccipital Muscles:
Rectus capitis posterior major and minor
Obliquus capitis inferior and superior
Definition
Innervation: Posterior ramus of C1
Function: Extension of the head
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