cervical triangles

Question 1

what are the superficial structures of the neck

Answer 1

skin, superficial fascia, platysma, cutaneous nerves, superficial veins, superficial lymph nodes

Question 2

what is function of platysma

Answer 2

facial expressions

Question 3

what is the supply of the platysma nerve

Answer 3

facial

Question 4

origin of platysma

Answer 4

deep fascia covering the pectoralis major and deltoid muscles

Question 5

insertion of platysma

Answer 5

lower margin of the body of mandible blending with the muscle at the angle of the mouth

Question 6

nerve supply of platysma

Answer 6

cervical branch of facial nerve

Question 7

action of platysma

Answer 7

depresses the mandible and draws the lower lip and angle of the mouth (make frown)

Question 8

greater occipital is from where

Answer 8

dorsal rami of c2

Question 9

what muscles does the greater occipital separate

Answer 9

semispinalis capitus and spinalis capitis

Question 10

the lesser occipital is from what

Answer 10

ventral rami c2

Question 11

what are the branches of cervical plexus

Answer 11

lesser occipital, great auricular, transverse cervical , supraclivuclar

Question 12

what is the great auricular from

Answer 12

ventral rami c2,c3

Question 13

what I s the transverse cervical from

Answer 13

ventral rami c2,3

Question 14

what is the supraclavicular from

Answer 14

c3,4 ventral rami

Question 15

what nerve runs on the posterior border of the scm

Answer 15

lesser occipital nerve c2

Question 16

what nerve from the cervical plexus also accompanies the external jugular vein

Answer 16

great auricular

Question 17

what nerve crosses across the scm

Answer 17

transverse cervical

Question 18

external jugular vein drains most of the () and ().

Answer 18

scalp and side of the face

Question 19

The external jug v begins at the angle of () with the union of the () vein and () vein

Answer 19

angle of mandible, union of posterior auricular vein and posterior division of retromandibular vein

Question 20

where does th e ext jug v end at

Answer 20

subclavian vein

Question 21

what is the only vein oto drain into the subclavian

Answer 21

the external jug v

Question 22

the external jug vein is external to the ()

Answer 22

scm

Question 23

what do you see with congested heart failure, stenosis, valsalva meanuver

Answer 23

the ext jug vein sticking out

Question 24

where does the superficial temporal veina nd common facial vein? (or ext jug v) unite

Answer 24

angle of mandible

Question 25

the anterior jugular vein arises near the () from small veins underneath the chin

Answer 25

hyoid bone

Question 26

the ant jug vein terminates into the () or ()

Answer 26

EJV or subclavian v

Question 27

where is the jugular venous arch

Answer 27

above the suprasternal notch, the left and right ant jug vein unite

Question 28

what presents problems with emergency tracheostomy

Answer 28

jugular venous arch being cut

Question 29

what venous structure is not present in everyone

Answer 29

jugular venous arch

Question 30

what separates the two triangles of the neck

Answer 30

anterior and posterior

Question 31

origin of scm

Answer 31

manubrium and medial third of clavicle

Question 32

insertion of scm

Answer 32

mastoid process of temporal bone

Question 33

nerve supply of scm

Answer 33

spinal part of accessory nerve c2,3

Question 34

action of scm

Answer 34

bilaterally: extend head at atlanto occipital jt, flex neck at cerv vert unilat: laterlaly bends the neck ipsilaterally, and rotates head contralaterally

Question 35

what is torticollis/wryneck

Answer 35

shortening of scm (congenital) or spasmodic contraction of scm

Question 36

whow do baby get torticollis

Answer 36

when baby pulled out (fibrosis make it permanent)

Question 37

what is the borders of the post triangle

Answer 37

ant: scm post: trapezius muscle inf: middle third of clavicle

Question 38

what divides the posterior triangle of neck

Answer 38

inferior belly of omohyoid muscle

Question 39

where is the occipital triangle

Answer 39

b/w scm, trap, and inferior belly of omohyoid

Question 40

where is the supraclaviular triangle located

Answer 40

smaller triangle b/w inferior part of scm, inferior belly of omohyoid and middle third of clavicle

Question 41

what can you feel in an occipital triangle

Answer 41

lymph nodes

Question 42

what is another name for the supraclavicular tirangle

Answer 42

subclavian triangle cause it contains the subclavian artery and vein

Question 43

what are the contents of the posterior triangle a (4), veins (3) nerves (3)

Answer 43

arteries: subclavian, superficial transverse cervical, suprascapular, occipital artery veins: external jugular, its tributaries, subclavian vein nerve: brachial plexus, spinal accessory, branches of cervical plexus

Question 44

occipital artery is a branch of the

Answer 44

external carotid/jugular a