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Anatomy I > Head, neck > Flashcards

Head, neck Flashcards

1
Q

List the muscles of mastication (4)

A
  • m. masseter
  • m. temporalis
  • m. pterygoideus lateralis/medialis
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2
Q

m. masseter

A
  • ​​​ORIGIN:
    • PARS SUPERFICIALIS: arcus zygomaticus
    • PARS PROFUNDAproc. zygomaticus, fascia temporalis
  • INSERTION: tuberositas masseterica
  • ACTION: elevation
  • INNERVATION: n. massetericus
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3
Q

m. temporalis

A
  • ORIGIN: fossa temporalis, fascia temporalis
  • INSERTION: proc. coronoideus mandibulae
  • ACTION: elevation (strongest)
  • INNERVATION: nn. temporales profundi
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4
Q

m. pterygoideus lateralis

A

caput inferius

  • ORIGIN: lamina lateralis proc. pterygoidei
  • INSERTION: fovea pterygoidea

caput superius

  • ORIGIN: facies infratemporalis, crista infratemporalis
  • INSERTION: discus articularis
  • ACTION: all movements
  • INNERVATION: n. pterygoideus lateralis
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5
Q

m. pterygoideus medialis

A
  • ORIGIN:
    • both: lamina lateralis proc. pterygoidei
    • smaller part: + tuber maxillaris
  • INSERTION: tuberositas pterygoidea
  • ACTION: elevation, protrusion, grinding
  • INNERVATION: n. pterygoideus medialis
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6
Q

What are the 7 deep muscles of the neck?

A
  • m. rectus capitis anterior
  • m. longus capitis
  • m. longus colli
  • mm. scaleni (anterior, medius, posterior, minimus)
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7
Q

m. rectus capitis anterior

A
  • ORIGIN: massa lateralis atlantis
  • INSERTION: pars basilaris ossis occipitalis
  • ACTION: ventralflexion
  • INNERVATION: plexus cervicalis
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8
Q

m. longus capitis

A
  • ORIGIN: tubercula anteriora proc. transversi T3-5
  • INSERTION: pars basilaris ossis occipitalis
  • ACTION: bilat: ventralflexion, unilat: lateralflexion
  • INNERVATION: plexus cervicalis
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9
Q

m. longus colli

A
  • ACTION: unilat: lateralflexion, rotation, bilat: ventralflexion
  • INNERVATION: plexus cervicalis + brachialis
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10
Q

m. scalenus anterior

A
  • INNERVATION: plexus brachialis
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11
Q

m. scalenus medius

A
  • INNERVATION: plexus cervicalis + brachialis
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12
Q

m. scalenus posterior

A
  • INNERVATION: plexus brachialis
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13
Q

m. scalenus minimus (missing in 2/3)

A
  • INNERVATION: plexus brachialis
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14
Q

Which movement is caused by the mm. scaleni? (2)

A

inspiration (quiet), unilat: lateralflexion

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15
Q

Where do the 3 laminae of the cervical fascia originate from and what are their names?

A

fascia cervialis splits into:

  • lamina superficialis fasciae cervicalis
  • lamina praetrachealis fasciae cervicalis
  • lamina praevertebralis fasciae cervicalis
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16
Q

What does the lamina superficialis fasciae cervialis enclose, what else can you say about it?

A
  • around the entire neck
  • encloses everything except platysma
  • m. trapezius and m. sternocleidomastoideus WITHIN the lamina
17
Q

What does the lamina praetrachealis fasciae cervialis enclose, what else can you say about it?

A
  • around anterior part of the neck
  • has 2 parts:
    • pars muscularis: encloses infrahyoidal mm.
    • pars vascularis: encloses thyroid gland, trachea, esophagus
  • blends with vagina carotica
18
Q

What does vagina carotica contain? (3)

A
  • a. carotis communis
  • v. jugularis interna
  • n. vagus
19
Q

What does the lamina praevertebralis fasciae cervialis enclose, what else can you say about it?

A
  • around vertebral column
  • encloses deep muscles of the neck: (no m. rectus capitis anterior!)
    • m. longus capitis
    • m. longus colli
    • mm. scaleni
20
Q

What are the superficial muscles of the neck?

Group them. (2) + (4) + (4)

A

superficial muscles

  • m. trapezius
  • m. sternocleidomastoideus

suprahyoid muscles

  • m. sternohyoideus
  • m. omohyoideus
  • m. sternothyroideus
  • m. thyrohyoideus

infrahyoid muscles

  • m. digastricus
  • m. stylohyoideus
  • m. geniohyoideus
  • m. mylohyoideus
21
Q

The superficial muscles of the neck make up 2 big triangles which can be seperated even more

A

trigonum cervicale laterale (= posterior cerv. region)

  • trigonum omotrapezoideum
  • trigonum omoclaviculare

trigonum cervicale anterius (= anterior cerv. region)

  • trigonum submandibulare
  • trigonum submentale
  • trigonum caroticum
  • trigonum musculare (= omotracheal triangle)
22
Q

1 - 5

A

1) m. mylohyoideus
2) m. geniohyoideus (deep to m. mylohyoideus)
3) m. digastricus venter anterior
4) m. digastricus venter posterior
5) m. stylohyoideus

23
Q
A

Anatomy I (8 decks)

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