Neck and Larynx Muscles Flashcards Preview

Year 1: 05. Neuro Exam 1 > Neck and Larynx Muscles > Flashcards

Flashcards in Neck and Larynx Muscles Deck (32)
Loading flashcards...
1

What does the Trapezius Muscle do?
What innervates it?

Extends neck bilaterally, laterally flexes neck and rotates face away
Spinal Accessory Nerve

2

What does the Sternocleidomastoid Muscle do?
What innervates it?

Extends and flexes neck, laterally flexes neck and rotates face away
Spinal Accessory Nerve

3

What does the Levator Scapulae Muscle do?
What innervates it?

Extends and laterally flexes neck
Dorsal Scapular Nerve

4

What does the Splenius Capitus Muscle do?
What innervates it?

Extends neck bilaterally, laterally flexes neck and rotates face toward
Posterior Rami C3-C5

5

What does the Anterior Scalene Muscle do?
What innervates it?

Flexes neck and elevates first rib
Anterior Rami C4-C6

6

What does the Middle Scalene Muscle do?
What innervates it?

Flexes neck and elevates first rib
Anterior Rami C3-C8

7

What does the Posterior Scalene Muscle do?
What innervates it?

Laterally flexes neck and elevates second rib
Anterior Rami C6-C8

8

What does the Mylohyoid Muscle do?
What innervates it?

Elevates hyoid bone and floor fo mouth + tongue
Nerve to Mylohyoid

9

What does the Geniohyoid Muscle do?
What innervates it?

Elevates hyoid bone, shortens floor of mouth, widens pharynx
C1 via hypoglossal nerve

10

What does the Digastric Muscle do?
What innervates it?

Elevates and steadies hyoid bone, depresses mandible
Anterior Belly: Nerve to Mylohyoid
Posterior Belly: Facial Nerve

11

What does the Stylohyoid Muscle do?
What innervates it?

Elevates and retracts hyoid bone, elongates floor of mouth
Facial Nerve

12

What does the Sternohyoid Muscle do?
What innervates it?

Depresses Hyoid Bone
Ansa Cervicalis (C1-C3)

13

What does the Sternothyroid Muscle do?
What innervates it?

Depresses thyroid cartilage
Ansa Cervicalis (C2-C3)

14

What does the Thyrohyoid Muscle do?
What innervates it?

Depresses Hyoid Bone and elevates thyroid cartilage
C1 via hypoglossal nerve

15

What does the Omohyoid Muscle do?
What innervates it?

Depresses and retracts hyoid bone
Ansa Cervicalis (C1-C3)

16

What does the Platysma Muscle do?
What innervates it?

Draw corner of mouth inferiorly and draws skin of neck superiorly
Cervical Branch of Facial Nerve

17

What does the Superior Pharyngeal Constrictor Muscle do?
What innervates it?

Constricts pharyngeal wall
Pharyngeal Branch of Vagus Nerve

18

What does the Middle Pharyngeal Constrictor Muscle do?
What innervates it?

Constricts pharyngeal wall
Pharyngeal Branch of Vagus Nerve + Branches of Recurrent Laryngeal Nerve

19

What does the Inferior Pharyngeal Constrictor Muscle do?
What innervates it?

Constricts pharyngeal wall
Pharyngeal Branch of Vagus Nerve + Branches of Recurrent Laryngeal Nerve

20

What does the Palatopharyngeus Muscle do?
What innervates it?

Elevates pharynx and larynx
Pharyngeal Branch of Vagus Nerve

21

What does the Salpingopharyngeus Muscle do?
What innervates it?

Elevates pharynx and larynx
Pharyngeal Branch of Vagus Nerve

22

What does the Stylopharyngeus Muscle do?
What innervates it?

Elevates pharynx and larynx
Glossopharyngeal Nerve

23

What does the Cricothyroid Muscle do?
What innervates it?

Stretches and tenses vocal ligament (high notes)
External Laryngeal Nerve (External Branch of Superior Laryngeal Nerve)

24

What does the Posterior Cricoarytenoid Muscle do?
What innervates it?

Abducts vocal fold
Recurrent Laryngeal Nerve

25

What does the Lateral Cricoarytenoid Muscle do?
What innervates it?

Adducts vocal fold
Recurrent Laryngeal Nerve

26

What do the Transverse and Oblique Arytenoid Muscle do?
What innervates it?

Adducts arytenoid cartilage and closes intercartilaginous part of rima glottidis
Recurrent Laryngeal Nerve

27

What does the Thyroarytenoid Muscle do?
What innervates it?

Relaxes vocal fold
Recurrent Laryngeal Nerve

28

What does the Vocalis Muscle do?
What innervates it?

Relaxes posterior part of vocal ligament and tenses anterior part of vocal ligament
Recurrent Laryngeal Nerve

29

What does the Longus Colli Muscle do?
What innervates it?

Flexes neck and rotates face away
Anterior Rami (C2-C6)

30

What does the Longus Capitus Muscle do?
What innervates it?

Flexes neck
Anterior Rami (C1-C3)