Cervical Triangle

Question 1

Platysma muscle

Answer 1

Most superficial muscle in the neck

Question 2

Platysma muscle action

Answer 2

• Facial expression
• Move corners of the mouth down
• Tense neck and upper chest

Question 3

Platysma muscle innervation?

Answer 3

Facial nerve, CN VII

Question 4

Posterior cervical triangle borders

Answer 4

Bound by the clavicle, trapezius, and sternocleidomastoid muscle

Question 5

Trapezius innervation

Answer 5

Accessory nerve, CN XI

Question 6

Sternocleidomastoid innervation

Answer 6

Accessory nerve, CN XI

Question 7

What muscles are in the posterior triangle?

Answer 7

• Trapezius
• Sternocleidomastoid
• Omohyoid
• Scalene muscles

Question 8

Where is the cutaneous branch of the cervical plexus located?

Answer 8

Posterior cervical triangle

Question 9

External jugular veins is located…

Answer 9

In the posterior cervical triangle

Question 10

Anterior cervical triangle borders

Answer 10

Sternocleidomastoid, body of mandible, and midline

Question 11

Sternocleidomastoid muscle is the dividing point between…

Answer 11

The anterior and posterior cervical triangles

Question 12

Sternocleidomastoid muscle origin

Answer 12

Sternum and clavicle

Question 13

Sternocleidomastoid muscle insertion

Answer 13

Temporal bone and mastoid process

Question 14

Sternocleidomastoid muscle action

Answer 14

• Unilaterally: Rotates head to opposite side
• Bilaterally: Cervical flexion

Question 15

Congenital torticollis

Answer 15

• Twisted neck
• Unilateral shortening and/or fibrosis of SCM

Question 16

Where are the suprahyoid and infrahyoid muscles located?

Answer 16

Anterior cervical triangle

Question 17

Suprahyoid and infrahyoid muscles actions?

Answer 17

Elevate, depress, protract, and retract the hyoid bone contribute to swallowing and speaking

Question 18

Suprahyoid muscles

Answer 18

Above hyoid

Question 19

Infrahyoid muscles

Answer 19

Below hyoid

Question 20

Why is the hyoid special?

Answer 20

Only bone without any articulations to other bones

Question 21

Where is the hyoid located?

Answer 21

Anterior on the midline of the neck between the mandible and thyroid cartilage

Question 22

What does the hyoid attach too?

Answer 22

Only has muscular and ligamentous attachments

Question 23

Thyroid cartilage

Answer 23

With laryngeal prominence, Adam’s apple

Question 24

Infrahyoid muscles are primarily innervated by the…

Answer 24

Ansa cervicalis

Question 25

What infrahyoid muscle is not innervated by the ansa cervicalis?

Answer 25

Thyrohyoid muscle

Question 26

Omohyoid muscle

Answer 26

Scapula to the hyoid

Question 27

Superior belly of the omohyoid muscle is located...

Answer 27

In anterior cervical triangle

Question 28

Inferior belly of the omohyoid muscle is located...

Answer 28

In posterior cervical triangle

Question 29

The superior limb of the nasa cervicalis runs along side...

Answer 29

Hypoglossal nerve

Question 30

Thyrohyoid muscle innervation

Answer 30

Fibers of C1

Question 31

Mylohyoid muscle innervation

Answer 31

Trigeminal nerve, CN V

Question 32

Digastric muscle anterior belly innervation

Answer 32

Trigeminal nerve, CN V

Question 33

Digastric muscle posterior belly innervation

Answer 33

Facial nerve, CN VII

Question 34

Stylohyoid muscle origin

Answer 34

Styloid process

Question 35

Stylohyoid insertion

Answer 35

Hyoid

Question 36

Stylohyoid innervation

Answer 36

Facial nerve, CN VII

Question 37

Thyroid gland

Answer 37

Endocrine glands, hormone secreting

Question 38

What unites the left and right lobes of the thyroid gland

Answer 38

Relatively thin isthmus

Question 39

Thyroid gland function

Answer 39

Regulate metabolism, growth, and development

Question 40

Parathyroid glands

Answer 40

4 pea shaped glands reside on the posterior aspect of the thyroid gland

Question 41

Parathyroid glands function

Answer 41

Play important roles in regulating blood calcium levels

Question 42

Cricothyroid membrane

Answer 42

Landmark for cricothyrotomy, establish patient airway in life seeking situation

Question 43

Tracheostomy

Answer 43

Non-emergent surgical procedure for establishing a patient airway

Question 44

Mylohyoid muscle

Answer 44

Forms the muscular floor of the oral cavity

Question 45

Mylohyoid muscle insertion

Answer 45

Fibers from the left and right muscle insert together on a midline raphe that attaches to the hyoid bone

Question 46

Raphe

Answer 46

Fibers interdigitating with each other

Question 47

Submandibular gland

Answer 47

C shaped salivary gland that wraps around the posterior border of the mylohyoid muscle

Question 48

What two areas of the submandibular gland rest?

Answer 48

Part of the gland resides within the neck, the remaining portion in the oral cavity

Question 49

Facial artery branches from the...

Answer 49

Carotid artery

Question 50

What is enclosed in the carotid sheath?

Answer 50

- Common carotid artery - Vagus nerve - Internal jugular vein

Question 51

The carotid sheath is made of...

Answer 51

Connective tissue

Question 52

Ansa cervicalis

Answer 52

Nerve loop that arises from the cervical plexus

Question 53

What courses along the carotid sheath?

Answer 53

Ansa cervicalis

Question 54

Branches in the external carotid artery include...

Answer 54

- Facial artery - Lingual artery - Superior thyroid artery

Question 55

Where does ht internal carotid artery go?

Answer 55

Goes straight towards cranial cavity to the brain, does not branch in neck

Question 56

Carotid body

Answer 56

Chemoreceptor

Question 57

Carotid sinus

Answer 57

Baroreceptor

Question 58

Carotid body and sinus are located...

Answer 58

Near bifurcation of the common carotid a.