Head, Neck Anatomy Flashcards Preview

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Flashcards in Head, Neck Anatomy Deck (23)
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1

Muscles of facial expression
-occipital frontalis

Originates and inserts - eyebrows, fascia and skin of skull

Action- raises eyebrows

2

Muscles of facial expression
-Where is the Anterior auricular

In front of the ear

3

Muscles of facial expression
-Where is the superior auricular

Above the ear

4

Muscles of facial expression
-Where is the posterior auricular

Behind the ear

5

Muscles of mastication
- masseter

Originates- lower border of zygomatic arch

Inserts- lateral ramus the mandible and coronoid process

Action- closes the jaw

6

Muscles of mastication
-temporalis

Originates- temporal fascia and fossa

Inserts- coronoid process and anterior border of ramus of mandible

Actions- closes and retracts jaw

7

Muscles mastication
*Actions
-medial pterygoid
-lateral pterygoid

Medial pterygoid- closes the jaw
Lateral pterygoid- depresses and protrudes and moves mandible from side to side

8

Muscles of mastication
-what four muscles open the jaw

Lateral pterygoid, digastric, mylohoid and platysma

9

Muscles of mastication
- what three muscles close the jaw

Masseter, medial pterygoid, temporalis

10

Muscles of mastication
- what muscle protrudes the jaw

Lateral pterygoids, both together

11

Muscles of mastication
- what muscle retracts the jaw

Posterior fibers of temporalis

12

Muscles of anterior neck
- platysma

Originates- deltoid and pectoral fascia

Inserts- mandible and skin

Actions - depresses angle of mouth and opens jaw

13

Muscles of anterior neck
- scm

Originates- sternum and clavical

Inserts- mastoid process

Actions- bends head to same side, rotates head,
Raises chin to same side, together bends head forward,
Elevates chin

14

Anterior vertebral muscles
- rectus capitis anterior

Originates- transverse process of atlas

Inserts- basilar part of occipital bone

Actions - flexes head

15

Anterior vertebral muscles
- rectus capitis lateralis

Originates- upper transverse process of atlas

Inserts- lower jugular process of occipital bone

Actions- bends head to side

16

Anterior vertebral muscles
- Anterior scalene

Originates- transverse process of c3- c6

Inserts- upper 1st rib

Actions- raises 1st rib and bends neck

17

Anterior vertebral muscles
- middle scalene

Originates- transverse process of c2 to c7

Inserts- upper 1st rib

Actions- bends neck and raise 1st rib

18

Anterior vertebral muscles
- posterior scalene

Originates- transverse process of c5- c7

Inserts- outer 2nd rib

Actions - raise 2nd rib

19

Muscles of posterior neck
- trapezius

Originates- external occipital protuberance,
medial superior nuchae line, ligamentum nuchae,
spinous process c7, t1- t12

Inserts- posterior border of lateral clavical,
medial Marjin acromion,
posterior border of the spine of the scapula

Actions- rotates scapula, adducts scapula,
upper trap raise scapula, lower trap draws scapula down,
Upper trap draws head to same side & turns face to opp' side,
2 sides together draw head back

20

Muscles of posterior neck
- levator scapula

Originates- posterior tubercles of tp c1 to c4

Inserts- medial border of scapula above spine

Actions- elevates the scapula,
rotates scapula when scapula is fixed,
extends and laterally bends head

21

Muscles of posterior neck
- splenius capitis

Originates- lig. Nuchae, spinous process of c7, t1 to t3

Inserts- lateral part of the occipital bone

Actions- extends the vertebral column

22

Muscles of posterior neck
- splenius cervicis

Originates- spinous process of t3 to t6

Inserts- transverse process of c1 to c3

Actions- extends the vertebral column

23

Muscles of posterior neck
- semispinalis capitis

Originates- c4 to c6

Inserts- planum nuchae of occipital bone

Actions- extends vertebral column