anterior triangle

Question 1

boundaries of anterior triangle

Answer 1

medially sternocleidomastoid

laterally base of the mandible and superiorly line joining the angle of the mandible to mastoid process

Question 2

divisions of ant triangle

Answer 2

submental
submandibular
carotid
muscular

Question 3

submental triangle boundaries and floor is made by?

Answer 3

each side u have ant belly of digastric
apex is made by the chin and the base is the body of hyoid bone
the floors is made by the mylohyoid muscle joined by the mylohyoid raphe

Question 4

content of submental triangle

Answer 4

submental lymph nodes

anterior jugular vein

Question 5

submental lymph nodes drain

Answer 5

superficial tissues below the chin
cental part of lower lip
adjoining gums 
tip of the tongue 
ant part of floor of the mouth

Question 6

boundaries of submandibular triangle

Answer 6

anteriorinferiorly: ant belly of diagastric
posteirnferotly: pst belly of diagastric
superiorly: line joining the base of the mandible with the mastoid process

Question 7

superfacial fascia of submandibular triangle contents

Answer 7

platysma
cervical branch of facial nerve
ascending branch of transverse cutaneous nerve

Question 8

roof of submandibular triangle is formed by

Answer 8

skin
superficial fascia
deep fascia which splits to make submandibular lymph nodes

Question 9

floor of submandibular triangle is made by

Answer 9

hypoglossus and ,mylohyoid

Question 10

ant part of submandibular triangle things superficial to the mylohyoid muscle

Answer 10

1. submandibular salivary gland
2. facial vein and submandibular lymph nodes. facial artery is deep to ir
3. mylohyoid nerve and vessels
4. hypoglossal nerve
5. submental artery

Question 11

pst part of submandibular triangle superficial content

Answer 11

lower part of parotid gland

and external carotid artery before entering the gland

Question 12

pst part of submandibular triangle deep content

Answer 12

stylopharyngeus 
styloid process
glossopharyngeal nerve 
styloglossus 
pharyngeal branch of vagus nerve 
a part of parotid gland

Question 13

pst part of submandibular triangle deepest content

Answer 13

internal jugular
internal carotid
vagus nerve

Question 14

boundaries of carotid triangle

Answer 14

anterosuperilry: pst belly of digastric
anteroinferiorly: superior belly of omohyoid
pst: sternocleidomastoid

Question 15

floor of carotid triangle is made by

Answer 15

middle constrictor of pharynx
inferior constrictor
and thyroid membrane

Question 16

arteries: carotid triangle

Answer 16

internal carotid 
common carotid 
external carotid with branches- ascending pharyngeal 
occipital 
labial 
facial and superior thyroid

Question 17

veins: carotid triangle

Answer 17

internal jugular
common facial
pharyngeal
lingual

Question 18

nerves of carotid triangle

Answer 18

vagus nerve 
superior laryngeal branch of vagus nerve which divides into internal and external laryngeal
hypoglossal nerve 
sympathetic chain
and carotid sheath with its contents

Question 19

lymph nodes in carotid triangle

Answer 19

deep cervical
juglo omohyoid
juglo diagastric

Question 20

right and left common cartoid arteries are branches of

Answer 20

right is a branch of brachiochephalic artery and left comes from the aortic arch

Question 21

nerve innervation of carotid sinus

Answer 21

glossopharyngeal and sympathetic nerves

Question 22

nerve innervation of carotid body and allied chemoreceptors on the arch of aorta

Answer 22

carotid body: glossopharyngeal and vagus and sympathetic nerves
arch of aorta chemoreceptors: vagus nerve

Question 23

branches of external cartoid artery

Answer 23

superior thyroid 
ascending pharyngeal 
lingual 
facial 
occipital 
posterior auricular 
maxillary 
superficial temporal

Question 24

superior thyroid artery supplies

Answer 24

to cricothyroid in association with external laryngeal nerve
supplies to thyroid gland
and a branch which is usperior laryngeal artery which is given to thyrohyoid with internal laryngeal nerve
also gives off branches to sternocleidomastoid branch and cricothyroid branch

Question 25

cervical part of facial artery gives off

Answer 25

ascending palatine, tonssilar submental, glandular to submandibular salivary gland and lymph nodes

Question 26

ascending palatine branch of cervical part of facial artery supplies

Answer 26

root of the tongue and tonsils

Question 27

subemntal branch f cervical branch of facial artery supplies

Answer 27

supplies submental triangle and sublingual salivary gland

Question 28

posterior auricular branch of cervical part of facial artery supplies

Answer 28

the back of the auricular, skin over mastoid process and the scalp
its stylomastoid branch enters the stylomastoid formamen and supplies the middle ear, mastoid antrum, air cells semiciruclar canal and the facial nerve

Question 29

what is ansa cervicalis and it supplies what

Answer 29

its a loop of nerves present in the ant wall of carotid sheath and supplies the infrahyoid muscles

Question 30

ansa cervicalis formation

Answer 30

it is formed by a superior and inferior root
superior root- desending branch of hypoglossal nerve, first cervical nerve
inferior root- from 2nd and 3rd cervical spinal nerves

Question 31

distribution of superior, inferior and ansa cervicalis

Answer 31

superior root: supper belly of omohyoid
ansa: sternohyoid and sternothyroid
inferior toor: inferior belly of omohyoid

Question 32

thyrohyoid and geniohyoid are supplied by

Answer 32

first cervical nerve through glossopharyngeal