18 - Neck & Cervical Plexus Flashcards Preview

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Flashcards in 18 - Neck & Cervical Plexus Deck (95)
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1

The first two cervical vertebrae are specialized as the ______ and ______.

Atlas
Axis

2

Cervical segments are the only ones with a _________ ________ (i.e., spinal roots of CN XI).

Branchial-motor outflow

3

What are 3 similarities between trunk and neck?

1) Both have vertebrae
2) Both have mixed spinal nerves
3) Both have separate epaxial and hypaxial muscle masses

4

The smooth muscles of the trunk gut are derived from ________ _______.

Unsegmented mesoderm

5

The gut tube in the neck is surrounded by striated branchial arch muscles, which are muscles of the _______ and _______. These muscles are derived from _______ _______ _______.

Pharynx
Larynx
Posterior pharyngeal arches

6

Superficial striated muscles of neck form an incomplete layer, which are the ________ and ________ muscles. These are derived from ______ ______ ______.

Trapezius
Sternocleidomastoid
Gill arch levators

7

The (NECK/TRUNK) lacks a coelom.

Neck

8

Hypaxial muscles in neck are innervated by what?

Ventral rami of spinal nerves

9

These are hypaxial muscles within the rectus cervicis series (rectus abdominis equivalents). The ones that lie deep are ________ and ________, and the ones that are superficial are the ________ and ________.

Sternothyroid
Thyrohyoid
Sternohyoid
Omohyoid

10

The muscles in the rectus cervicis series are also called the ________ muscles.

Infrahyoid

11

This hypaxial muscle of the neck forms the incomplete floor of the mouth.

Geniohyoid

12

These hypaxial muscles of the neck are the _______ muscles, which are the intercostal muscle/abdominal oblique equivalents).

Scalene

13

This scalene muscle goes from the transverse processes of C3-C6 to the first rib.

Anterior scalene

14

This scalene muscle goes from the transverse processes of C5-C7 to the first rib.

Middle scalene

15

This scalene muscle goes from the transverse processes of C5-C7 to the second rib.

Posterior scalene

16

This hypaxial muscle of the neck goes from the upper three or four cervical transverse processes to the upper medial corner of the scapula.

Levator scapulae

17

These hypaxial muscles of the neck are prevertebral muscles (no equivalents elsewhere in the body). The lateral and anterior intertransversarri consist of...

Rectus capitis lateralis
Rectus capitis anterior

18

These hypaxial muscles of the neck are prevertebral muscles (no equivalents elsewhere in the body). The longer prevertebral muscles consist of...

Longus capitis
Longus colli

19

The prevertebral fascia covers the muscular floor (hypaxial muscles of neck) consisting of...

Splenius capitis
Levator scapulae
Scalenus posterior
Scalenus medius
Scalenus anterior
Omohyoid

20

What is the superior border of the anterior triangle of the neck?

Mandible

21

What is the posterior border of the anterior triangle of the neck?

Sternocleidomastoid (anterior border of)

22

What is the anterior border of the anterior triangle of the neck?

Midline of the neck

23

What are the subdivisions of the anterior triangle of the neck?

Muscular triangle
Submandibular triangle
Carotid triangle

24

This is a component of the muscular triangle made up of two in-line bellies, anterior and posterior.

Digastric

25

The digastric (muscular triangle) is innervated by two different cranial nerves based on embryological origin from two different ________ ________.

Pharyngeal arches (I and II)

26

What is the origin of the anterior belly of the digastric?

Digastric fossa of mandible

27

What is the insertion of the anterior belly of the digastric?

Posterior belly via intermediate tendon of hyoid bone

28

What actions does the anterior belly of the digastric perform?

Elevate hyoid and tongue
Open mouth
Depress mandible

29

What innervates the anterior belly of the digastric?

Mylohyoid nerve (branch of CN V3 - mandibular nerve)

30

What is the origin of the posterior belly of the digastric?

Mastoid notch of temporal bone