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Anterior Triangle Flashcards

(50 cards)

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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

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A

By 2nd, 3rd cervical spinal nerves

To inferior belly of omohyoid

22
Q

Right and left common carotid from

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A

Right: brachiocephalic artery
Left: Arch of aorta

23
Q

Carotid sinus

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

External carotid branches

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A
  1. Superior thyroid
  2. Lingual
  3. Facial
  4. Occipital
  5. Posterior auricular
  6. Ascending pharyngeal
  7. Maxillary
  8. Superficial temporal
25
Superior thyroid artery branches and their supply
1.Superior laryngeal artery Pierces thyrohyoid membrane with internal laryngeal NERVE 2. SCM branch supplies SCM 3. Cricothyroid branch that anastamoses with artery on opposite side
26
Superior thyroid artery is in close relation with
External laryngeal NERVE which supplies cricothyroid
27
Superior thyroid artery originates and ends at
Below level of greater cornu of hyoid to upper pole of thyroid
28
Lingual artery arises at (site)
Opposite tip of greater cornu of hyoid
29
Lingual artery divided into __ parts by __ muscle
3 | Hyoglossus
30
First part of lingual artery
- in carotid triangle - lingual loop crossed by hypoglossal nerve - permits free movement of hyoid
31
Second part of lingual artery
- deep to hyoglossus | - superficial to middle constrictor of pharynx
32
Third part of lingual artery
- called deep lingual artery | - along anterior border of hyoglossus
33
Fourth part of lingual artery
- undersurface of tongue - medially- genioglossus - laterally- inferior longitudinal muscles of tongue
34
Branches of lingual artery
Suprahyoid Dorsal lingual Sublingual
35
Facial artery site of origin
Above tip of greater cornu of hyoid
36
Relations of cervical part of facial artery
Deep to: Posterior belly of digastric Stylohyoid Ramus of mandible
37
Course of facial artery
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
Branches of cervical part of facial artery
Ascending Palatine Tonsillar Submental Glandular
39
Ascending Palatine artery
- branch of facial A - from near origin of facial artery - between styloglossus and stylopharyngeus - supplies tonsils and root of tongue
40
Submental artery
- from facial artery - accompanies mylohyoid NERVE - supplies submental triangle and sublingual salivary gland
41
Occipital artery site of origin
Posterior aspect of external carotid
42
Occipital artery is crossed by
Hypoglossal NERVE
43
Occipital artery branches in carotid triangle
2 SCM branches in carotid triangle 1 accompanies accessory NERVE
44
Posterior auricular artery site of origin
Just above superior belly of digastric
45
Posterior auricular artery supplies
- Back of auricle | - skin over mastoid process
46
Branches of posterior auricular artery and their supply
- Stylomastoid branch - enters stylomastoid foramen - supplies middle ear, mastoid antrum, semicircular canals
47
Ascending pharyngeal artery site of origin
Lower end of external carotid
48
Ascending pharyngeal artery branches
Sends meningeal branches to cranial cavity through - foramen lacerum - jugular foramen - hypoglossal canal
49
Maxillary artery site of origin
- terminal branch of external carotid - behind neck of mandible under parotid - enters infratemporal fossa
50
Superficial temporal artery branches
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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