Triangles of the Neck Flashcards

1
Q

What structure divides the neck into the anterior and posterior triangles?

A

The Sternocleidomastoid muscle

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2
Q

What are the boarders of the posterior triangle?

A

Anterior- posterior boarder of the SCM
Posterior- Anterior boarder of the Trapezius
Inferior- superior boarder of the middle 1/3 of the clavicle

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3
Q

What are the boarders of the anterior triangle?

A

Superior- inferior boarder of the mandible
Anterior- The anterior mid line
Posterior- anterior boarder of the SCM

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4
Q

Where does the apex of the anterior triangle sit?

A

inferiority, at the jugular notch

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5
Q

what forms the roof of the anterior triangle?

A
  • the investing layer of the deep cervical fascia
  • the superficial cervical fasia
  • the Platysma
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6
Q

What are the four subdivisions of the anterior triangle?

A

1) Submental triangle
2) Submandibular (Diagastric) Triangle
3) Carotid Triangle
4) Muscular Triangle

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7
Q

Which of the anterior triangle subdivisions is unpaired?

A

Submental Trianlge

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8
Q

The boundaries of the submental triangle…

A

1) L/R anterior bellies of the digastric muscles

2) the body of the hyoid bone

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9
Q

The floor of the submental triangle…

A

the mylohyoid muscle

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10
Q

what are the contents of the submental triangle?

A

minor vessels and some lymph nodes

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11
Q

what is one clinical aspect of the submental triangle?

A

the lymph nodes contained here will become swollen with tongue or lip cancer.

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12
Q

What are the boundaries of the submandibular triangle?

A

1) inferior boarder of the mandible
2) the anterior belly of hte digastric
3) posterior belly of the digastric

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13
Q

What makes up the floor of the submandibular trianlge

A

the myohyoid and hypoglossus muslces

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14
Q

what are the contents of the submandibular triangle?

A

1) submandibular salivary gland
2) internal carotid artery
3) facial artery
4) internal jugular vein
5) glossopharngeal nerve (CN IX)
6) vagus nerve (CN X)

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15
Q

What is one major clinical aspect/consideration with the submandibular trianlge?

A

use caution when palpating or adjusting with contacts in this area due to the importance of the neurovascualr contents

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16
Q

What are the boundries of the carotid trianlge?

A

1) posterior belly of the digastric
2) superior belly of the omohyoid
3) anterior belly of the Sternocleidomastoid

17
Q

What makes of the floor of the carotid trianlge?

A

postrions of these muscles:

1) tyrohyoid
2) hypoglossus
3) inferior constrictor
4) middle constrictor

18
Q

What are the contents of the carotid triangle?

A

1) common carotid artery
2) internal carotid artery
3) external carotid artery
4) tributaries of the external jugular vein

19
Q

What are the three branches of the eternal carotid artery that are found within the carotid triangle?

A

1) Superior Thyroid Artery
2) Lingual Artery
3) Facial Artery

20
Q

What are the boundaries of the muscular triangle?

A

1) superior belly of the omohyoid
2) anterior mid line of the neck
3) anterior boarder of the sternocleidomastoid

21
Q

what makes up the floor of the muscular triangle?

A

The posterior layer of the pretracheal fascia

22
Q

What are the contents of the muscular triangle?

A

1) sternohyoid
2) sternothyroid
3) thyroid gland
4) trachea
5) esphagus