ANT triangle of neck

Question 1

main functions of the infrahyoid muscles

Answer 1

• depress hyoid bone + larynx after elevated during swallowing and speeking
• Steady the hyoid (provides firm base for tongue)

Question 2

What occurs in omohyoid muscle syndrome

Answer 2

injury to fascial retaining mechanism of the momohyoid intermediate tendon

when pt swallows it can displace the overlying SCM causing a lat bulging neck mass

Question 3

What nerve follows the hypoglossal nerve

Answer 3

CN1

Question 4

What muscles will the C1 nerve inn

Answer 4

Thyrohyoid and geniohyoid m and will also join lower roots

Question 5

what spinal cord levels is the laynx found

Answer 5

C4-6

Question 6

what spinal levels is the pharynx found

Answer 6

Cranial base-C6 vert

Question 7

what is found on the post part of the throid gland and what is their function

Answer 7

will find usually 4 parathyroid glands- regulate calcium conc

Question 8

What happens if parathyoids get removed

Answer 8

decreased serum calc

Question 9

What is goiter

Answer 9

abnormal enlargement of the throid gland

Question 10

What is the pyramidal lobe

Answer 10

remenent of thyroglossal that is present in 50% of people

Question 11

what does the carotid fascia invest

Answer 11

Common carotid (int above c4)
Int jugular
Vagus nerve

Question 12

what is the retropharangeal fascia between + how low does it go

Answer 12

bw prevertebral fascia and pretracheal fascia

goes as low as T3

Question 13

infections in retropharangeal space may extend inf into what

Answer 13

superior mediastinum

Question 14

where is the bifurcation of common carotid aa

Answer 14

C4 VB

Question 15

Is the ext carotid in the carotid sheath

Answer 15

NO

Question 16

what are the parts of the accsessory nerve

Answer 16

has spinal part and cranial part

cranial also becomes part of vagus

Question 17

Where does the vagus and acessory nerve exit out of

Answer 17

jugular foramen

Spinal segment first goes into skul via foramen magnum

Question 18

proximally (right out of the skull) the carotid sheath will invest

Answer 18

hypoglossal n
spinal accessory
vagus n
internal jug v
internal carotid a
ansa cervisalis

Question 19

lessions of the accessory nerve produce

Answer 19

• weakness in turning head to opposite side
• atrophy in trapz
• drooping of shoulder

Question 20

how to test accessory nerve

Answer 20

shrug against resistance