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Gross Anatomy 2 > Neck-Anterior Triangle > Flashcards

Neck-Anterior Triangle Flashcards

1
Q

Subdivisions of the Anterior Triangle:

A
  1. Submental
  2. Digastric
  3. Carotid
  4. Muscular
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2
Q

The Submental Triangle is bounded on each side by the anterior bellies of what muscles?

A

right and left digastric muscles

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3
Q

The base of the Submental Triangle is formed by the body of what bone?

A

Hyoid bone

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4
Q

The floor of the Submental triangle is formed by what muscles?

A

right and left mylohyoid muscles and the median raphe uniting them

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5
Q

Contents of the Submental Triangle:

A
  • 2-4 small lymph nodes

- Submental veins (join to form the anterior jugular vein)

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6
Q

The Digastric Triangle is also known as?

A

Submandibular Region

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7
Q

What triangle lies bw the body of the mandible and the hyoid bone?

A

Digastric Triangle

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8
Q

Anterinferior boundary of Digastric Triangle:

A

Anterior belly of digastric

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9
Q

Posteroinferior boundary of Digastric Triangle:

A

Posterior belly of digastric

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10
Q

Base of Digastric Triangle:

A

formed by the mandible, and a line joining the angle of the mandible to the mastoid process

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11
Q

The roof of Digastric Triangle: skin, superficial fascia (containing the platysma, the cervical branch of the _____ nerve, and the ascending branch of the ________ nerve) and the deep fascia.

A

Facial Nerve

Transverse Cervical Nerve

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12
Q

The floor of the Digastric Triangle is formed by the _______ muscle anteriorly and by ______ posteriorly.

A

mylhyoid

hyoglossus

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13
Q

Contents of Digastric Triangle:

  • The Submandibular ____ nearly fills the triangle
  • Submandibular ____ lie on each side of the submandibular gland and along the inferior border of the mandible
  • The ______ nerve, the mylohyoid nerve and vessels, parts of the ____ artery and vein, and the submental Artery (A branch of the Facial Artery)
  • In the posterior part of the triangle lie the lower part of the _____ gland and the _____ artery before it enters the parotid gland
A
  • Gland
  • lymph nodes
  • hypoglossal nerve (CN XII), Facial Artery
  • Parotid Gland, External Carotid Artery
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14
Q

Boundaries of the Carotid Triangle:
Anterosuperiorly: the ____ belly of digastric
Anteroinferiorly: the superior belly of ____
Posteriorly: the _____ border of the SCM

A

Posterior

omohyoid

Anterior

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15
Q

Contents of Carotid Triangle:
The neurovascular structures in the Carotid Triangle are surrounded by the carotid sheath:
- The ______ medially
- The ______ laterally
- The ______ posteriorly
- The ______ superiorly
- The ______ usually lies on the anterolateral aspect of
the sheath
- ______ lymph nodes lie along the carotid sheath and the IJV

A
  • Carotid Arteries
  • IJV
  • Vagus Nerve
  • Internal Carotid Artery
  • ansa cervicalis
  • deep cervical lymph nodes
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16
Q

The _____ triangle is bounded by the:

  • Superior belly of the omohyoid muscle
  • anterior border of the SCM
  • median plane of the neck
A

Muscular

17
Q

What triangle contains the infrahyoid muscles and the viscera of the neck:

A

Muscular

18
Q

The Posterior belly of the digastric muscle is supplied by what nerve:

A

Facial Nerve

19
Q

The anterior belly of the digastric muscle is supplied by what nerve:

A

Nerve to mylohyoid

20
Q

Actions of the Digastric Muscle:
- To _____ the mandible (assists the ____ in opening the
mouth)
- ______ the hyoid during swallowing

A

Depress (lateral pterygoid)

Elevates

21
Q

What muscle originates from the back of the styloid process:

A

Stylohyoid

22
Q

The Stylohyoid is innervated by:

A

Facial Nerve

23
Q

The Stylohyoid muscle ____ and _____ the hyoid bone when swallowing.

A

Retracts and Elevates

24
Q

Innervation of Mylohyoid:

A

Nerve to mylohyoid, a branch of the inferior alveolar (from the mandibular Nerve V3)

25
Q

The mylohyoid muscle ______ the tongue and ____bone when swallowing

A

elevates

hyoid

26
Q

What muscle inserts into the upper border of the hyoid bone?

A

Geniohyoid

27
Q

The geniohyoid is innervated by _____ nerve (consisting of fibers from ____ spinal nerve)

A

Hypoglossal Nerve

C1

28
Q

The geniohyoid ______ and ______ the hyoid bone in swallowing

A

protracts and elevates

29
Q

If the hyoid bone is fixed, the geniohyoid muscle _____ the mandible.

A

depresses

30
Q

Sternohyoid is innervated by what nerve?

A

Ansa cervicalis

Gross Anatomy 2 (1 decks)

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