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Gross II > Neck > Flashcards

Neck Flashcards

1
Q

What vertebral level is the thyroid cartilage located at

A

C4-5

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2
Q

What vertebral level is the hyoid bone at

A

C3

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3
Q

What vertebral level is the cricoid cartilage at

A

C6

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4
Q

What vertebral level does the trachea begin at

A

Below C6

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5
Q

What nerves innervate the skin of the neck

A

Primarily the C2,3,4 spinal nerves

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6
Q

What is significant about the C2 spinal nerve dermatome

A

It covers the angle of the mandible, and is the only spinal nerve to innervate the face

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7
Q

What nerve innervates the majority of the skin of the face

A

Cranial nerve V (trigeminal nerve)

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8
Q

What is the origin of the platysma

A

Fascia and skin of deltoid and pectoral regions

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9
Q

What is the insertion of the platysma

A

Mandible and tissues around the mouth

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10
Q

What is the innervation of the platysma

A

Cranial nerve VII (facial nerve)

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11
Q

What are the borders of the anterior triangle

A

SCM- posterior
Inferior border of the mandible- superior
Midline of the anterior neck- anterior

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12
Q

What are the borders of the posterior triangle of the neck

A

Clavicle- inferior
SCM- anterior
Trapezius- posterior

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13
Q

What is the origin of the SCM

A

Sternal head: sternum

Clavicular head: clavicle

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14
Q

What is the origin of the SCM

A

Mastoid process, occiput

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15
Q

What is the innervation of the SCM

A

Cranial nerve XI (spinal accessory) – motor

VPR C2,3 spinal nerve – sensory

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16
Q

What is the action of SCM

A

Unilateral– ipsilateral flexion and contralateral rotation of neck and head
Bilateral– flexion of neck and extension of head

17
Q

What are borders of the submandibular triangle

A

Posterior belly of digastric
Anterior belly of digastric
Body of mandible

18
Q

What are the contents of the submandibular triangle

A

Submandibular gland

Facial artery and vein

19
Q

What are the borders of submental triangle

A

Hyoid bone
Anterior bellies of digastric m
Skin of anterior neck

20
Q

What are the borders of the carotid triangle

A

Posterior belly of digastric
SCM
Superior belly of omohyoid

21
Q

What are the contents of the carotid triangle

A

Common carotid artery and bifurcation
Internal jugular vein
Cranial nerve X (vagus nerve)

22
Q

What are the borders of the muscular triangle

A

Superior belly of omohyoid
SCM
Anterior midline of neck

23
Q

What are the contents of the muscular triangle

A

Infrahyoid mm
Thyroid gland
Larynx

24
Q

What are the borders of the supraclavicular triangle

A

Inferior belly of omohyoid
Clavicle
SCM

25
Q

What are the borders of the occipital triangle

A

Trapezoid
SCM
inferior belly omohyoid

26
Q

What are the contents of the occipital triangle

A

Cranial nerve XI

several cutaneous nerves from cervical plexus

27
Q

What is the cervical plexus formed by

A

Ventral rami of C1-4

28
Q

What nerve is formed by ventral rami of C2

A

Lesser occipital nerve

29
Q

What does the lesser occipital nerve innervate

A

Skin of posterior scalp behind the ear

30
Q

What nerve is made from the fibers of ventral rami of C2-3

A

Great auricular nerve

31
Q

What does the great auricular nerve innervate

A

Sensory innervation to skin below and anterior to external ear and part of errand skin over angle of mandible

32
Q

What nerves is the transverse cervical nerve derived from

A

Ventral rami of C2-3

33
Q

What is nerve is made from C3-4 ventral rami

A

Supraclavicular nerves

34
Q

What does the supraclavicular nerve innervate

A

Innervates the skin of the base of neck, upper thorax, and top of shoulder

35
Q

Which nerves hitchhike on Cranial nerve XI

A

C2,3,4

36
Q

Which nerve sometimes hitchhikes with cranial nerve XII

A

C1

Gross II (13 decks)

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