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Anatomy > Anterior Triangle > Flashcards

Anterior Triangle Flashcards

1
Q

Submental triangle boundaries

A

Each side: anterior belly of digastric
Base: hyoid
Apex: chin

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2
Q

Submental triangle floor

A

Mylohyoid muscles

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3
Q

Submental triangle contents

A
  • Submental lymph nodes

- Small submental veins join to form anterior jugular vein

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4
Q

Digastric boundaries

A

Anter-inf: anterior belly of digastric
Post-inf: posterior belly of digastric & stylohyoid
Base: base of mandible

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5
Q

Digastric roof

A

Superficial fascia: platysma, cervical branch of facial N., Ascending branch of transverse cutaneous N of neck.

Submandibular salivary gland

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6
Q

Digastric floor

A

Mylohyoid
Hyoglossus
Middle constrictor of pharynx

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7
Q

Digastric anterior part contents

A

6

Submandibular salivary gland
Submandibular lymph nodes
Facial vein
Submental artery
Mylohyoid nerve & vessels
Hypoglossal nerve

SSSFMH

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8
Q

Digastric posterior contents

A

Superficial:
Parotid
External carotid artery

Deep:
Styloglossus
Stylopharyngeus
Glossopharyngeal nerve
Pharyngeal branch of vagus
Styloid process

Deepest:
Internal carotid
Internal jugular
Vagus nerve

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9
Q

Carotid boundaries

A

Anter-sup: posterior belly of digastric & stylohyoid
Anter-inf: superior belly of omohyoid
Post: SCM

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10
Q

Carotid roof

A

Superficial fascia: platysma, cervical branch of facial nerve, transverse cutaneous nerve of neck

Investing layer of deep cervical fascia

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11
Q

Carotid floor

A

Middle constrictor of pharynx
Inferior constrictor of pharynx
Thyrohyoid membrane

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12
Q

Arteries in carotid triangle

A

Common carotid artery
Internal carotid artery
External carotid artery: superior thyroid, lingual, facial, ascending pharyngeal, occipital branches

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13
Q

Veins in carotid triangle

A

Internal jugular
Common facial
Pharyngeal
Lingual

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14
Q

Nerves in carotid triangle

A 
Vagus
Superior laryngeal branch of vagus
Spinal accessory
Hypoglossal
Sympathetic chain
Carotid sheath
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15
Q

Lymph nodes in carotid triangle

A

Deep cervical
Jugulodigastric
Juguloomohyoid

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16
Q

Muscular triangle boundaries

A

Ant: anterior median line of neck
Post-sup: superior belly of omohyoid
Post-inf: SCM

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17
Q

Contents of muscular triangle

A

Sternohyoid
Sternothyroid
Thyrohyoid
Omohyoid

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18
Q

Characteristics of infrahyoid muscles

A
  1. Supplied by ventral Rami of 1, 2, 3 cervical spinal nerves
  2. Move hyoid bone and thyroid cartilage
  3. Arranged as superficial and deep
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19
Q

Ansa cervicalis supplies

A

Infrahyoid muscles

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20
Q

Superior root of Ansa cervicalis by and to

A

By descending branch of hypoglossal nerve

To superior belly of omohyoid

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21
Q

Inferior root of Ansa cervicalis by and to

A

By 2nd, 3rd cervical spinal nerves

To inferior belly of omohyoid

22
Q

Right and left common carotid from

A

Right: brachiocephalic artery
Left: Arch of aorta

23
Q

Carotid sinus

A
  1. Thin tunica media
  2. Rich glossopharyngeal and sympathetic nerve supply
  3. Acts as baroreceptor
24
Q

External carotid branches

A
  1. Superior thyroid
  2. Lingual
  3. Facial
  4. Occipital
  5. Posterior auricular
  6. Ascending pharyngeal
  7. Maxillary
  8. Superficial temporal
25
Q

Superior thyroid artery branches and their supply

A

1.Superior laryngeal artery
Pierces thyrohyoid membrane with internal laryngeal NERVE

  1. SCM branch supplies SCM
  2. Cricothyroid branch that anastamoses with artery on opposite side
26
Q

Superior thyroid artery is in close relation with

A

External laryngeal NERVE which supplies cricothyroid

27
Q

Superior thyroid artery originates and ends at

A

Below level of greater cornu of hyoid to upper pole of thyroid

28
Q

Lingual artery arises at (site)

A

Opposite tip of greater cornu of hyoid

29
Q

Lingual artery divided into __ parts by __ muscle

A

3

Hyoglossus

30
Q

First part of lingual artery

A
  • in carotid triangle
  • lingual loop crossed by hypoglossal nerve
  • permits free movement of hyoid
31
Q

Second part of lingual artery

A
  • deep to hyoglossus

- superficial to middle constrictor of pharynx

32
Q

Third part of lingual artery

A
  • called deep lingual artery

- along anterior border of hyoglossus

33
Q

Fourth part of lingual artery

A
  • undersurface of tongue
  • medially- genioglossus
  • laterally- inferior longitudinal muscles of tongue
34
Q

Branches of lingual artery

A

Suprahyoid
Dorsal lingual
Sublingual

35
Q

Facial artery site of origin

A

Above tip of greater cornu of hyoid

36
Q

Relations of cervical part of facial artery

A

Deep to:
Posterior belly of digastric
Stylohyoid
Ramus of mandible

37
Q

Course of facial artery

A

Cervical part:
-Winds over submandibular gland and then over base of mandible (S-bend)

Facial part:

  • Enters at anter-inf part of masseter
  • runs close to angle of mouth, side of nose till medial border of eye
38
Q

Branches of cervical part of facial artery

A

Ascending Palatine
Tonsillar
Submental
Glandular

39
Q

Ascending Palatine artery

A
  • branch of facial A
  • from near origin of facial artery
  • between styloglossus and stylopharyngeus
  • supplies tonsils and root of tongue
40
Q

Submental artery

A
  • from facial artery
  • accompanies mylohyoid NERVE
  • supplies submental triangle and sublingual salivary gland
41
Q

Occipital artery site of origin

A

Posterior aspect of external carotid

42
Q

Occipital artery is crossed by

A

Hypoglossal NERVE

43
Q

Occipital artery branches in carotid triangle

A

2 SCM branches in carotid triangle

1 accompanies accessory NERVE

44
Q

Posterior auricular artery site of origin

A

Just above superior belly of digastric

45
Q

Posterior auricular artery supplies

A
  • Back of auricle

- skin over mastoid process

46
Q

Branches of posterior auricular artery and their supply

A
  • Stylomastoid branch
  • enters stylomastoid foramen
  • supplies middle ear, mastoid antrum, semicircular canals
47
Q

Ascending pharyngeal artery site of origin

A

Lower end of external carotid

48
Q

Ascending pharyngeal artery branches

A

Sends meningeal branches to cranial cavity through

  • foramen lacerum
  • jugular foramen
  • hypoglossal canal
49
Q

Maxillary artery site of origin

A
  • terminal branch of external carotid
  • behind neck of mandible under parotid
  • enters infratemporal fossa
50
Q

Superficial temporal artery branches

A
  1. Transverse facial artery
  2. Middle temporal artery
  3. Anterior branch - anastamoses with supraorbital and supratrochlear branch of opthalmic
  4. Posterior branch

Anatomy (23 decks)

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