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Head & neck.

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Presentation on theme: "Head & neck."— Presentation transcript:

1 Head & neck

2 Muscles of head Facial muscles Muscles of mastication
muscles of scalp (두개표근) muscles of eye (안부의 근) muscles of nose (비부의 근) muscles of mouth (구부의 근) Muscles of mastication

3 Muscles of neck Superficial cervical muscle (platysma)
Lateral cervical muscle (sternocleidomastoideus) Suprahyoid muscles Infrahyoid muscles Anterior vertebral muscles Lateral vertebral muscles # Cervical fasciae superficial cervical fascia middle cervical fascia deep cervical fascia

4 Suboccipital Triangle (muscle)

5

6 Trunk

7 Muscles of trunk deep dorsal muscles(muscles of back)
superficial gorup deep group suboccipital muscles muscles of thorax muscles of abdomen anterior abdominal muscles posterior abdominal muscles muscles of perineum

8 Deep dorsal muscles superficial gorup deep group splenius(C/C)
Trunk superficial gorup splenius(C/C) erector spinae illocostalis(L/T/C) longissimus(T/C/C) spinalis(T/C/C) deep group semispinalis(T/C/C) multifidus rotatores interspinalis intertransversarii

9 Deep dorsal muscles (superficial) Splenius capitis Splenius cervicis
Superficial Layers Trunk

10 Deep dorsal muscles (superficial)
Trunk Splenius capitis/cervicis Origin lower portion of ligamentum nuchae spinous processes of C3-T3(4) / T3-T6 Insertion superior nuchal line, mastoid process posterior tubercles of transverse processes of C2-C4 Action bilateral : extend head & neck unilateral : rotate and laterally bend head & neck Blood : muscular branches of the aorta Nerve : dorsal rami of spinal nerves

11 Deep dorsal muscles(superficial)
Erector spinae illocostalis(L/T/C) longissimus(T/C/C) spinalis(T/C/C) Intermediate Layers Trunk

12 Deep dorsal muscles (superficial)
Trunk Erector spinae : illocostalis(L/T/C), longissimus(T/C/C), spinalis(T/C/C) Origin sacrum, Iliac crest, ribs, vertebrae inferior to insertion Insertion ribs and vertebrae superior to origin and mastoid process Action B : extends of vertebral column, maintenance of erect posture stabilization of vertebral column during flexion, acting in contrast to abdominal muscles and the action of gravity U : rotate and lateral bend to same side opposite muscles contract eccentrically for stabilization Blood : muscular branches of the aorta Nerve : dorsal rami of spinal nerves

13 Deep dorsal muscles (deep) semispinalis multifidus rotatores
intersinalis intertransversarii Trunk Deep Layers

14 Deep dorsal muscles (deep)
Trunk semispinalis Origin transverse processes Insertion nuchal lines of occipital bone spinous processes Action extends head and neck controls lateral flexion to side opposite contraction (eccentric for stability) maintains head posture Blood : muscular branches of the aorta Nerve : dorsal rami of spinal nerves

15 Deep dorsal muscles (deep)
Trunk multifidus Origin transverse(articular) processes of C/T/L… Insertion spinous process Action B : extends vertebral column controls lateral flexion to side opposite contraction (eccentric for stability) U : rotate vertebral bodies (column) to opposite side Blood : muscular branches of the aorta Nerve : dorsal rami of spinal nerves

16 Deep dorsal muscles (deep)
Trunk rotatores Origin transverse processes Insertion base of spinous process Action rotate to opposite side bilateral extension Blood : muscular branches of the aorta Nerve : dorsal rami of spinal nerves

17 Deep dorsal muscles (deep)
Trunk intersinalis Origin spinous processes Insertion Action extension of the vertebrae segments Blood : muscular branches of the aorta Nerve : dorsal rami of spinal nerves

18 Deep dorsal muscles (deep)
Trunk intertransversarii Origin transversus processes Insertion Action laterally flexes each respective pair of vertebrae (also eccentric muscle contraction provides stability) Blood : muscular branches of the aorta Nerve : dorsal rami of spinal nerves

19 Suboccipital muscles # obliquus capitis superior
# obliquus capitis inferior # rectus capitis posterior major # rectus capitis posterior minor Trunk

20 Suboccipital muscles obliquus capitis superior/inferior
Trunk obliquus capitis superior/inferior rectus capitis posterior major/minor Origin atlas, axis Insertion nuchal line of occiput Action bilaterally extends the head rotates the head to the contracted side Blood : muscular branches of vertebral artery Nerve : suboccipital nerve, (dorsal C1)

21 Muscles of thorax # external intercostals # internal intercostals
Trunk # external intercostals # internal intercostals # transversus thoracis # levatores costarum # subcostalis Post.Thoracic Wall

22 Muscles of thorax external intercostals Origin Insertion Action
Trunk external intercostals Origin inferior border of each rib Insertion superior border of the nest rib Action elevate ribs Nerve : intercostal nerves

23 Muscles of thorax internal intercostals Origin Insertion Action
Trunk internal intercostals Origin superior border of each rib Insertion inferior border of the previous rib Action depress ribs Nerve : intercostal nerves

24 Muscles of thorax transversus thoracis Origin Insertion Action
Trunk transversus thoracis Origin medial surface of sternum Insertion cartilages of ribs Action depress ribs Nerve : intercostal nerves

25 Intermediate Dissection
Trunk # external oblique # internal oblique # transversus abdominis # rectus abdominis # pyramidalis # quadratus lumborum # iliacus # psoas major # psoas minor Intermediate Dissection

26 Muscles of abdomen external oblique Origin Insertion Action
Trunk external oblique Origin lower 8 ribs Insertion linea alba and iliac crest Action compresses abdomen depresses ribs flexes or bends spine Nerve : intercostal and iliohypogastric nerves

27 Muscles of abdomen internal oblique Origin Insertion Action
Trunk internal oblique Origin lumbodorsal fascia and iliac crest Insertion lower ribs, xiphoid of sternum, linea alba Action compresses abdomen depresses ribs flexes or bends spine Nerve : intercostal and iliohypogastric nerves

28 Muscles of abdomen transversus abdominis Origin Insertion Action
Trunk transversus abdominis Origin cartilages of lower ribs, iliac crest, lumbodorsal fascia Insertion linea alba and pubis Action compresses abdomen Nerve : intercostal, iliohypogastric, and ilioinguinal nerves

29 Muscles of abdomen rectus abdominis Origin Insertion Action
Trunk rectus abdominis Origin inferior surfaces of costal cartilages of ribs(5-7) xiphoid of sternum Insertion superior surface of pubis around symphysis Action depresses ribs flexes vertebral column Nerve : thoracic spinal nerves

30 Muscles of abdomen Trunk Superficial Dissection

31 Deep Dissection Trunk

32 Ant.Abdominal Wall

33 Posterolatal Abdominal Wall

34 Muscles of perineum # coccygeus # levator ani # sphincter urethrae
Trunk Muscles of perineum # coccygeus # levator ani # sphincter urethrae # transversus perinei profundus


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