nerve/blood supply organs

Question 1

thorax cutaneous innervation

Answer 1

upper ant thorax:c3,c4,t1,t2
upper pectorial region: supraclavicular nerve,c3,c4
skin of axilla: intercostobrachial nerve
subcostal margin/costal margin: br fr T7
ant and lateral thorax: ventral rami T3-T6
post. thorax: dorsal rami thoracic nerve
thoracic wall.skin and subcutaneous tissue ant.abdominal wall: 7-11 thoracic nerves

Question 2

fibrous pericardium

Answer 2

N:phrenic.n
B:descending thoracic aorta,internal art,musculophrenic art (DIM)

Question 3

serous pericardium

Answer 3

parietal:
N: phrenic nerve
B:descending thoracic aorta,internal art,musculophrenic art
V: azygous system,int,thoracic vein

visceral:
symp: T1-T4,parasymp:vagus
B:coronary arteries, coronary sinus(venous0

Question 4

heart nerve supply(look at diagram in notes)

Answer 4

1) parasymp: vagus
2) symp:upper 3-5 T segments
3) superficial cardiac plexus-
sup.cervical cardiac br of left symp chain,
inf.cervical vardiac br of left vagus
4) Deep cardiac plexus-
cardiac br of vagi and symp chain(except the ones forming sup plexus)
recurrent laryngeal nerves

Question 5

lungs blood supply

Answer 5

arteries:
Left- 2 bronchial art fr des.c thoracic aorta
R- 1 bronchial art fr post,intercostal art
veins:
2 bronchial vein on each side
L-drain into hemiazygous or L.sup intercostal vein
R-drain to azygous vein

LN
1)sup lymphatic vessel- drain peripheral tissue beneath pleura
2) deep lymph vessels-drain bronchial tree, pulmonary vessels,connective tissue septa
both run toward hilum and drain into bronchopulmonary nodes

Question 6

lungs nerve supply

Answer 6

parasymp nerves from vagus
1)motor fibers to bronchial muscles-bronchospasm
2) secretomotr fibers- to mucous glands of bronchial tree
3) sensory fibers- stretch reflex,cough reflex

symp fibers:fr 2-5th sympathetic ganglia
inhibit smooth muscle, bronchodilation

Question 7

nasal septum nerve supply

Answer 7

upper: olfactory nerve fiber

anterosup: int.nasal br of ant.ethmoidal n

posterosup:-medial post.sup. nasal brs of pterygopalatine ganglion

anteroinf: ant.sup. alveolar n

posteroinf: nasopalatine br of pterygopalatine ganglion

Question 8

nasal septum blood sup

Answer 8

anterosup: ant.ethmoidal, post.ethmoidal art

posterosup:sphenopalatine art

anteroinf: kiesselbach’s plexus- br.of facial art,ant.ethmoidal,greater palatine,phenopalatine art

posteroinf: greater palatine art

venous:
ant: drain into facial vein
post: drain into pterygoid venous plexus through sphenopalatine vein

LN:
ant:submandibular LN
post: retropharyngeal LN

Question 9

lat wall nose blood sup

Answer 9

anterosup: ant.ethmoidal

posterosup:sphenopalatine

anteroinf: alar brs of facial art

posteroinf: greater palatine

venous:
ant:facial v
middle:ptergoid venous plexus
post: pharyngeal plexus of veins

Question 10

lat wall nerve sup

Answer 10

anterosup: ant.ethmoidal

posterosup:lat.poat.sup nasal br of pterygopalatine ganglion

anteroinf: ant.sup alveolar n

posteroinf: ant.palatine br.pterygopalatine ganglion

Question 11

frontal sinus

Answer 11

art: supraorbital
v: supraorbital,sup.opthalmic
n:supraorbital n
LN: submandibular

Question 12

sphenoidal sinus

Answer 12

art: post.ethmoidal
v:pterygoid venous plexus
n:post.ethmoidal
LN:retropharyngeal

Question 13

ethmoidal sinus

Answer 13

anterior and middle
art:ant.ethmoidsl
v:ant.ethmoidal
n:ant.ethmoidal
LN:submandibular

posterior
art:post.ethomoidal
v:post.ethmoidal
n:post.ethmoidal
LN:retrophryngeal

Question 14

maxillary sinus

Answer 14

art:infraorbital,greater palatine
v:facial veain,pterygoid venous plexus
n:post.sup.alveolar,ant and middle superior alveolar
LN:submandibular

Question 15

scalp

Answer 15

art supply:
infront auricle
1)supratrochlear
2)supraorbital
3)superficial temporal
behind auricle
1)post.auricular
2) occipital

venous drainage: refer to notes
nerve supply: notes

LN:
ant:pre auricular LN
post: post.auricular LN and occipital grp

Question 16

face overall

Answer 16

art:facial, tranverse facial
venous:facial,retromandibular v

others see notes

Question 17

larynx

Answer 17

blood sup
abv vocal fold:sup.laryngeal vessels
below: inf.laryngeal vessels

n:
motor: all muscle except cricothyroid-recurrent laryngeal n, cricothyroid-ext.laryngeal n
sensory: abv VC- int.laryngeal nerve,below: recurrent laryngeal

Question 18

parotid g

Answer 18

art: br of ext carotid
v: retromandibular vein
n:
parasymp:secretomotor pathway
symp: vasomotor pathway
sensory: gland- auriculotemporal,partid fascia- great auricular n
LN:parotid grp-drain into jugulodigastric LN

Question 19

submandibular g

Answer 19

art:facial art
v:common facial/lingual v
n:secretomotor
LN:submandibular

Question 20

tongue

Answer 20

art:lingual art,tonsillar art(suplly post.part)
v:deep lingual, venae comitantes drain into common facial vein
n:
motor-all muscle: hypoglossal n except palatoglossus-pharyngeal plexus

sensory:
ant2/3:
general-lingual n
special- chorda tympani
post 1/3+circumvalate; sensory+ special-glossopharyngeal n
base-gen+ special- int.laryngeal
LN:
apex,frenulum: submental LN
ant2/3:
med- inf deep cervial LN
lat-submandibular LN
post 1/3: sup.deep cervical LN

Question 21

trachea

Answer 21

ext: C6- DISC BTW T4 AND T5
art:
cervial- br fr inf thyroid
thoracic- br of bronchial
v: tracheal v drain via inf thyroid plexus to brachiocephalic veins
n:br of vagi,recurrent laryngeal,symp trunk
LN:

Question 22

oesophagus

Answer 22

blood supply;
cervical-inf thyroid vessles
thoracic-
1)bronchial art
2) Oesophageal br of desc thoracic aorta
3)br of left phrenic anf left gastric art
v: azygous,hemiazygous
n:oesophageal plexus
parasymp:vagus
symp: t4 and t5 fibers
LN:

Question 23

TMJ nerve supply

Answer 23

auriculotemporal n
masseteric n

Question 24

nasopharynx

Answer 24

n: pterygopalatine ganglion carrying maxillar n fibers

Question 25

oropharynx nerve

Answer 25

glossopharyngeal n

Question 26

tonsils

Answer 26

art:
tonsillar br fr facial art
dorsalis linguae bf of lingual art
asc.br of facial art
asc,pharyngeal br of ECA
greater palatine art
v:veins fr tonsils drain into paratonsillar veins and to pharyngeal plexus of veins
n:glossopharyngeal.n, lesser palatine br of sphenopalatine ganglion
LN:tonsillar LN drain into jugulodigastric LN

Question 27

pleura blood supply

Answer 27

visceral:bronchopulmonary vessels
parietal: art fr intercosral n,int thoracic n
v: drain into azygos
LN: intercostal,diaphragmatic,int. thoracic LN

Question 28

pleura nerve sup

Answer 28

parietal
costal:intercostaln
mediastinal:phrenic
diaphragmatic:phrenic,lower 6 intercostaln

visceral
symp:t2-t5
parasymp:vagus