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Gross Anatomy 2 > Anterior Triangle of Neck > Flashcards

Anterior Triangle of Neck Flashcards

1
Q

Triangles of the neck

Sternocleidomastoid (SCM)

A

Divides anterior from posterior triangle

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2
Q

Boundaries of the Anterior Triangle

Anterior border

A

Imaginary midline of neck

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3
Q

Boundaries of the Anterior Triangle

Posterior border

A

Anterior border of SCM

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4
Q

Boundaries of the Anterior Triangle

Base

A

Mandible

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5
Q

Divisions of the Anterior Triangle

A
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6
Q

Divisions of Anterior Triangle

Submental

A

Submental lymph nodes and beginning of anterior jugular vein

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7
Q

Divisions of Anterior Triangle

Submandibular

A

Submandibular salivary gland, lymph nodes, fascial artery and vein, carotid sheath, hypoglossal nerve etc

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8
Q

Divisions of Anterior Triangle

Carotid

A

Carotid sheath, branches of external carotid artery, internal jugular vein, hypoglossal accessory and vagus nerves etc

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9
Q

Divisions of Anterior Triangle

Muscular

A

Sternohyoid and sternothyroid form the floor beneath which lies the thyroid gland, larynx, trachea and oesophagus

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10
Q

Contents of Anterior Triangle

A
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11
Q

Fascia of Anterior Neck

A
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12
Q

Platysma

Attachments

A

From fascia above pectoralis major and clavicle to lateral neck and onto mandible

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13
Q

Platysma

Innervation

A

Facial nerve CN VII

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14
Q

Veins of Head/Neck

A
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15
Q

Supra-hyoid muscles

Function

A

Raise hyoid bone or depress mandible (mylohyoid and digastric)

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16
Q

Supra-hyoid muscles

Innervation

A

Facial nerve - posterior belly of digastric and stylohyoid

Mandibular division of trigeminal CNV3 - anterior belly of digastric and mylohyoid

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17
Q

Supra-hyoid muscles

Geniohyoid

A

Deep to mylohyoid - Innervated by C1 via hypoglossal CN XII

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18
Q

Infrahyoid Muscles

Function

A

Depress hyoid bone

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19
Q

Infrahyoid Muscles

Attachments

A

Indicated by names of muscles

20
Q

Infrahyoid Muscles

Innervation

A

Ansa cervialis except thyrohyoid (C1 via hypoglossal CN XII)

21
Q

Vasculature and Nerves

22
Q

Cervical Plexus

Root value

A

Anterior rami C1-4

23
Q

Cervical Plexus

Arrangement

A

Joined into loops which lie anterior to levator scapulae and scalenus medius

24
Q

Cervical Plexus

Covering

A

Formed by pre-vertebral layer of deep cervical fascia

25
Q

Cervical Plexus

Innervation provided

A

Somatic motor and sensory (plus sympathetic)

26
Q

Cervical Plexus

27
Q

Common Carotid Artery

Origin

A

LCA from arch of aortaRCA from brachiocephalic

28
Q

Common Carotid Artery

Branches

A

No branches except the terminal ones = inernal and external carotid

29
Q

Common Carotid Artery

Branches supply

A

Internal to brainExternal to head, face, neck

30
Q

Common Carotid Artery

.Location

A

Within carotid sheath with internal jugular vain and vagus nerve

31
Q

Carotid and Neighbours

32
Q

Branches of External Carotid

33
Q

Other Neck Vessels

34
Q

Vagus Nerve

Root Value

35
Q

Vagus Nerve

Route

A

Descends in carotid sheath. Has recurrent laryngeal branches to muscles of larynx - Left around arch of aorta and right around subclavian artery

36
Q

Vagus Nerve

Branches

A

Internal and external laryngeal. Travel through thoracic inlet into superior mediastinum - supply parasympathetic innervation to thorax and abdomen

37
Q

Structures in Neck

38
Q

Thyroid Gland

Type of secretion

A

Endocrine - regulates metabolic rate

39
Q

Thyroid Gland

Lobes

A

2 - Isthmus (over tracheal ring 2 or 3) and capsule

40
Q

Thyroid Gland

Covers

A

From lamina of thyroid cartilage down to 6th tracheal ring

41
Q

Thyroid Gland

Parathyroid glands

A

Embedded into posterior surface

42
Q

Thyroid Vasculature

43
Q

Submandibular Salivary Glands

Position

A

Inferior to mylohyoid, plus part in floor of mouth superior to mylohyoid

44
Q

Submandibular Salivary Glands

Openings

A

One duct either side opening between first and second lower incisiors either side of frenelum

45
Q

Submandibular Salivary Glands

Innervation

46
Q

Thoracic Duct

Gross Anatomy 2 (28 decks)

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