week ten - salivary glands + lymphatics

Question 1

describe the parotid gland

Answer 1

LARGEST MAJOR ENCAPSULATED salivary gland

extends irreg from zygomatic arch to angle to mandible

travels through Stenson’s duct&raquo_space; parotid papilla

innervated by
motor: parasym inn. from glossopharyngeal
sensory: auriculotemporal branch of trigeminal

blood supp: branches of external carotid A.

Question 2

describe the submandibular gland

Answer 2

2nd largest encapsulated major salivary gland

travels through Wharton’s duct along FOM&raquo_space; subling.caruncle

loc: sup. to mylohyoid musc

innervated by: chorda tympani of facial n.

blood supp: facial + lingual a.

Question 3

describe the sublingual gland

Answer 3

smallest of three major glands

composed of a major sublingual gland and 8-30 minor subling. glands

bartholin’s duct opens into wharton’s duct&raquo_space; sublingual caruncle
- multiple tiny ducts drain minor subling glands –> FOM

loc: ant. to submand gland

innervated by: chorda tympani + facial

blood supply: sublingual and submental arteries [branches of lingual and facial a. which are branches of ext.carotid]]

Question 4

list the three main roles od the lymphatic system

Answer 4

1. immune system regulation
2. fluid balance
3. fat absorption

Question 5

TRUE OR FALSE

the lymphatic vessels parallel the venous blood vessels but are less in number, they are also smaller and thinner than capillaries

Answer 5

F

parallel venous blood vessels but more numerous + are larger/thicker than capillaries

Question 6

describe lymph nodes

Answer 6

bean shaped, grouped in clusters

move along connecting lymphatic vessels

filter toxins from lymph preventing entry –> vascular sys

Question 7

describe lymph fluid

Answer 7

transparent/slightly yellow

alkaline in nature

derived from fluid tx

96% water 4% solids

Question 8

list the lymph nodes of the head and rough quantities

Answer 8

superficial
- parotid 10
- facial 12
- retroauricular 1-3
- ant. auricular 1-3
- occipital 1-3

deep [too deep to be palpated]
- deep parotid
- retropharyngeal

Question 9

list the lymph nodes of the neck and rough quantities

Answer 9

superficial
- submental 2-3
- submand. 3-6
- ext.jugular
- ant.jugular
- ant.cervical

deep
classified as either sup/inf
sup.deep cervical lymph node = jugulodigastric

inf.deep cervical lymph node = **jugulo-omohyoid **

Question 10

describe the accessory and supraclavicular lymph nodes

Answer 10

acc
2-6
inf portion of neck

supraclavicular
1-10
loc in clavicle

Question 11

distinguish mucocele from ranula

Answer 11

Mucocele = painless fluid-filled cyst on inner mouth surface

Ranulas = mucoceles that are of major salivary gland origin and occur on FOM

Question 12

describe sjogren’s Syndrome

Answer 12

autoimmune cond - maintly affecting eyes + salivary glands [dry eyes and xeriostomia]
- can lead to gland dysfunction