Anatomy - Anterior Triangle Of Neck

Front 1

infra-hyoid muscles

Back 1

"strap" muscles, located inferior to the hyoid bone

Front 2

the infra-hyoid muscles

Back 2

sterno-hyoid, omo-hyoid, thyro-hyoid, sterno-thyroid

Front 3

sterno-hyoid muscle origin, insertion

Back 3

sternum, hyoid bone

Front 4

omo-hyoid muscle origin, insertion

Back 4

scapula of shoulder, hyoid bone, has superior and inferior muscle bellies that are connected by a tendon

Front 5

thyro-hyoid muscle, origin, insertion

Back 5

thyroid cartilage, hyoid bone

Front 6

sterno-thyroid muscle, origin, insertion

Back 6

sternum, thyroid cartilage

Front 7

location of superior belly of omo-hyoid muscle

Back 7

anterior triangle

Front 8

location of inferior belly of omo-hyoid muscle

Back 8

posterior triangle

Front 9

planes of the infra-hyoid muscles

Back 9

sterno-hyoid and omo-hyoid are on same plane, thyro-hyoid and sterno-thyroid are on a deeper plane

Front 10

sterno-hyoid action

Back 10

depresses hyoid after elevation during swallowing

Front 11

omohyoid action

Back 11

depresses, retracts, and steadies hyoid

Front 12

sternothyroid

Back 12

depresses hyoid and larynx

Front 13

thyrohyoid

Back 13

depresses hyoid and elevates larynx

Front 14

ansa cervicalis

Back 14

C1-C3, motor nerve loop, gives motor innervation to all infrahyoid muscles, except for thyrohyoid muscle

Front 15

innervation of thyrohyoid muscle

Back 15

direct continuation of ventral ramus of C1 spinal nerve after it gave off superior root of ansa cervicalis

Front 16

geniohyoid muscle

Back 16

part of suprahyoid muscles, innervated by ventral ramus of C1 spinal nerve

Front 17

superior root of ansa cervicalis

Back 17

comes from C1

Front 18

inferior root of ansa cervicalis

Back 18

comes from C2 and C3

Front 19

True or False: Branches of ventral ramus of C1 branch off of hypoglossal nerve

Back 19

false, they just take a ride on the back of the nerve, but aren't actually branches of it

Front 20

hypoglossal nerve

Back 20

cranial nerve XII

Front 21

branches of ventral ramus of C1

Back 21

superior root of ansa cervicalis, nerve to thyrohyoid muscle and nerve to geniohyoid muscle

Front 22

main contents and underlying structures of sternocleidomastoid region

Back 22

SCM, superior part of external jugular vein, great auricular nerve, transverse cervical nerve

Front 23

main contents and underlying structures of lesser supraclavicular fossa

Back 23

inferior part of internal jugular vein

Front 24

main contents and underlying structures of posterior cervical region

Back 24

trapezius, cutaneous branches of posterior rami of cervical spinal nerves, suboccipital region or triangle lies deep to superior part of this region

Front 25

lateral cervical region (posterior triangle of neck) is made up of

Back 25

occipital triangle and omoclavicular (subclavian) triangle

Front 26

main contents and underlying structures of occipital triangle

Back 26

part of external jugular vein, posterior branches of cervical plexuses of nerves, spinal accessory nerve (CN XI), trunks of brachial plexus, transverse cervical artery, cervical lymph node

Front 27

main contents and underlying structures of omoclavicular triangle

Back 27

subclavian artery (third part), sometimes part of subclavian vein, suprascapular artery, supraclavicular lymph nodes

Front 28

anterior cervical region (anterior triangle of neck) is made up of

Back 28

submandibular triangle, submental triangle, carotid triangle, muscular triangle

Front 29

main contents and underlying structures of submandibular triangle

Back 29

submandibular gland almost fills the triangle, submandibular lymph nodes, hypoglossal nerve, mylohyoid nerve, parts of facial artery and nerve

Front 30

main contents and underlying structures of carotid triangle

Back 30

carotid sheath containing common carotid artery and branches, internal jugular vein and tributaries, vagus nerve, external carotid artery and some of its branches, hypoglossal nerve and superior root of ansa cervicalis, spinal accessory nerve (CN XI), thyroid gland, larynx, pharynx, deep cervical lymph nodes, branches of cervical plexus

Front 31

main contents and underlying structures of muscular triangle

Back 31

sternothyroid and sternohyoid muscles, thyroid and parathyroid glands

Front 32

external jugular vein is formed by

Back 32

retromandibular vein and posterior auricular vein, join inferior to ear

Front 33

retromandibular vein is located

Back 33

behind angle of mandible

Front 34

posterior auricular vein is located

Back 34

behind ear