lecture 2 - head & neck 2

Question 1

What is the function of temporalis?

Answer 1

Elevates and retrudes mandible for mastication

Question 2

What is the function of masseter?

Answer 2

Elevates mandible for mastication

Question 3

What is the function of medial pterygoid muscle?

Answer 3

Elevates and protrudes mandible

Question 4

What is the function of lateral pterygoid?

Answer 4

protrudes & depresses chin - opens mouth

Question 5

What is the function of the digastric muscle?

Answer 5

Elevates hyoid, and when hyoid is fixed, depresses mandible

Question 6

What is the nerve supply of the anterior belly of digastric muscle?

Answer 6

Mylohyoid nerve, a branch of the inferior alveolar nerve of V3 (mandibular branch of trigeminal nerve)

Question 7

What is the nerve supply of the posterior belly of digastric muscle?

Answer 7

Branch of facial nerve

Question 8

What type of joint is the temperomandibular joint?

Answer 8

Modified hinge synovial

Question 9

What are the articular surfaces of the TMJ?

Answer 9

condyle of mandible,
articualr tubercle and mandibular fossa of temporal bone

Question 10

What are the 3 key ligaments of the Temperomandibular joint?

Answer 10

Sphenomandibular ligament, lateral ligament, stylomandibular ligament

Question 11

What are the possible movements of the mandible at the TMJ?

Answer 11

Depression, elevation, protrusion, retraction, lateral movement

Question 12

What are the functions of sternocleidomastoid?

Answer 12

Flexes and rotates neck

Question 13

What are the 2 veins that form the external jugular vein?

Answer 13

Retromandibular vein, Posterior Auricular vein

Question 14

Which vein crosses sternocleidomastoid?

Answer 14

External jugular vein

Question 15

What is the common name for the infrahyoid muscles?

Answer 15

Strap muscles

Question 16

What is the function of the infrahyoid muscles?

Answer 16

Anchor the hyoid bone so that the suprahyioid muscles can act. Also depress the hyoid & larynx during speaking and swallowing

Question 17

What nerves supply the infrahyoid muscles?

Answer 17

Branches of the cervical plexus

Question 18

What are the 4 infrahyoid muscles?

Answer 18

Thyrohyoid, sternothyroid, omohyoid, sternohyoid

Question 19

Which 2 infrahyoid muscles lie superficial to the others?

Answer 19

sternohyoid, omohyoid

Question 20

Which 2 infrahyoid muscles lie deep to the others?

Answer 20

thyrohyoid, sternothyroid

Question 21

What are the 2 neck muscles that attach to the first rib?

Answer 21

Anterior and middle scalene muscles

Question 22

What is the neck muscle that attaches to the second rib?

Answer 22

Posterior scalene

Question 23

What are the functions of the scalene muscles?

Answer 23

Neck flexion, forced inspiration

Question 24

What is the function of dividing the neck into compartments?

Answer 24

Limits the spread of abscesses

Question 25

Which layer of fascia surrounds all of the neck structures and lies between the superficial fascia and muscles?

Answer 25

Investing layer

Question 26

Which layer of fascia encloses the thyroid, trachea and eosophagus?

Answer 26

Pretracheal fascia

Question 27

Which layer of fascia surrounds the vertebral column and associated muscles?

Answer 27

Prevertebral layer

Question 28

Which layer of fascia surrounds the carotids arteries, internal jugular vein and vagus nerve?

Answer 28

Carotid sheath

Question 29

What are the circular lymph nodes of the head/neck?

Answer 29

Occipital, retroauricular, parotid, buccal, submental, submandibular

Question 30

Which lymphnodes lie along the external jugular vein?

Answer 30

superficial cervical

Question 31

Which lymphnodes lie along the internal jugular vein?

Answer 31

deep cervical nodes

Question 32

What are the major lymph ducts draining lymph from the head and neck?

Answer 32

Right and left jugular trunks