Download MBBS 1st Year Anatomy Anatomy Head and Neck Part I Notes Notes

SCALP

Soft tissue covering the vault of skull

Boundaries:

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1. Ant - superciliary Arch of frontal bone.
2. Post - superior nuchal lines of occipital bone
3. Each side superior Temporal line.

LAYERS OF SCALP:

5 layers from superficial ? deep

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S - skin

C - connective tissue.

A - Aponeurosis (epicranial aponeurosis).

L - Loose areolar tissue.

P - Pericranium (outer periosteum)

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Wounds of scalp bleed profusely because:

1. wall of cam vessels fail to retract because they are adhered to dense ct.
2. It is profusely supplied with blood ce anastoman with each other
3. Wounds of scalp heal quickly because
4. Scalp is the commonest site of sebaceous cysts because it contains max no. of sebaceous glands as compared to anywhere else in the body.

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5. DANGEROUS LAYER OF SCALP :- 4th layer

The layer of loose areolar tissue.

if pus collect here , the infection may travel from this layer through emissary veins into intracranial dural venous sinuses, causing their thrombosis & associated meningitis.

Black Eye:- Blow on head.

Bleeding in 3rd layer (Close Arcocert) tht beneath epicranial aponeurosis & itre associated mi/s - Fronter & occipital belly of OCE or Galea Aponeurotica

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Attachments - post sup nuchal lui lat-zygomatic arch Out - ? hany Attachment. mergen wilt skw & of stt eyebrows R

ARTERIAL SUPPLY

Each lateral ½ of scalp is supplied by s arteries & vein

3 in front of auricle

2 behind auricle

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venous Drainage

1. supratrochlear vein
2. supraorbital vein
3. superficial temporal
4. Posterior auriculov.

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5. Occipital vein.

NERVE SUPPLY :-

Sensory Each Lateral ½ of scalp is supplied by Nem

in front of auricle.

behind the auricle

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1. C2, C3
2. C2, C3
3. C3

Motor:-

Each lateral ½ of scalp is supplied by 2 hence

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1. witront of auricle &
2. benind the auricle.

front or Auricle

Temporal an of pacios Ne

Behind the auricle

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post.auriculer Branes of faliain

SCALP Nerve & Blood supply.

OPTHALMIC

DIY.

(CN-S)

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SUPRA-TROCHLEAR N

SUPRA-ORBITAL N

ZYGOMATICO TEMPORAL

N.

MAXILLAR TEMPORAL N

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DIY.

CN-S

CN-7.

Auriculo-

Temporal Nerve.

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MANDIBULAR

AIVCCN-5]

GREATER AURICULAR

MOTOR.

N.

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POST. AURICULAR

N

CN-7

LESSER OCCIPITAL

N.

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GREATER-COLLIPAL

POSTERIOR

DIY.

NERYE

THIRD-OLUPITAD

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NERVE C3

SUP YUEW.

Nose

OPTHALMIC A.

Cinternal caretid A

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SUPRA-TROCHLEAR A

Ceran var of

SUPRA-ORBUtal

superficial

Temporal

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A.(timind

uranch)

EXTERNA

CAROTIA AL

Branches.

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POST-

AURICULAR

4.

OCCIPITAL A

Posterior

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leranches.

Nerve.

EAR

TEMPORAL BRANCH

FACIAL NERVE

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4S, M (C.N. VII)

post- Auriculor Marrial

TRIGEMINAL NERYE

OPTHALMIC ST

50

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MAXILLARY ? ZT

T

MANDIBULAR. - AT

CRANIAL NERVE

I Olfactory

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optic

Occulomotor

THA

Trochlear

Trigeminal

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Auditory

Aliquens

rom

facial

MO.

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FAG

I Yagus

Acusong

Glossopharyngeal

? ?

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OPTHALMIC

MAXILLARY

MANDIBULAR

I, ?, ?- SENSORY

I, I?, ?, X-MIXED ?

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3,4,6,11,12 ? MOTOR.

jamo nam waisa kam.

3,4,6- EYE MOVEMENT [Micle] OU SO LR

9.12- TONGUE DOO

(GCOssal)

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1,2 - Forelerah.

3,4 - MidBrain.

5,6,7,8-Pons.

BRAIN STEM.

9,10,11,12 - Hediye alelongate

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All ranial nerve come out from ventral aspect expect (N.)

come out dorsally

& then wind around to reach venrally

TRIGEMINAL NERVE (CN-S)

Maxillary division

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MAXILLARY DEVISION:- 4 parts.

I sensory

I comes from foramen Rottindum

IN MIDDLE

CRANIAL FOSSA

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meningeal leranch.

IN PTERYGOPALATINE

FOSSA-

IN INFRAORBITAL

CANAL

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ON FACE

sup

? ?etico.

Ganglionic Ar

cler-21

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zygomatic ler

POLA-sup.

Alveolar

ZF

Ant. sup. Alveolar Nerve

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Middle up Alveolar Nem

palpaliral.-ye

Labial-upper us

Nalaw.

CN-5 (OPTHALMIC JIYIHAN)-sensory

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supply up

Opthalmrei

Division

1- Supra Trochleas

FRONTAL-

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supra-Orleitas

NASOCILIARY. Ompraronlear N.

content of

ant ethma

Foram

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CONTE Of

Foram

Ant. Ethmoidal N.

Post. Ethmoider N.

Long Ciliargn

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Br. to Ciliary Ganglion

MANDIBULAR NERVE - Supply musus of mestier

From A.

MASTILATION Midla

FROM MAINTRUNK!

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Nervous

Spinonim.

(Meningeas branch)

N. to Medial

Pterygeid Muicle

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13 much

Csupply?

Mattachin

to

Mandibur (2

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Temos Tympani

"

Palanink

& Medias Pterygaid!!

attained to Mo?

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From P.A.

MASSETERN.

DEEP TEMPORALN.

- Temporalis m?)

IN. TO LATERAL

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PTERYGOID

RUCCALNERYE

(cutaneous N.)

MOTOR

sensory

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Menauer N. has 3 cutanearer. & Musuler supply.

1. Buccal N.
2. Auriculo remporan.
3. Mental N

FROM 1.8.

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Tem scalp

MASTICATION.

Auriulo Temporal nerve: supply:-

? Auriular

- cufancos N... Nomuscles nipply

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superficial Temporal.

Arnuler branch of Temperamenditud

secretomotor t? PAROTIO

GLAND

LINGUAL NERVE

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(General senianion from

Amnt 2/3ra of Tongue)

INFERIOR ALVEOLARN.AS

CARN. ~supplystower teeth

MYLOHYOID MUSKE

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ANT. BELLY OF DIGASTRIC

Mental Branch skind chin

N. to Mywnyoud.

MANDIBULAR NERVE - wmer from Foramen Ovale.

MOTOR

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ROOT

SENSORY

ONERYOUS

SPINOSUM

AURILULO-

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50M & TEMPORAL N

Lect

Ganglia windi un roud

Middle

Meningeal Artery

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wmen trou L

OPTHALMICE Superar arlutas forauren]

MAXILLARY [Forauren Rotendum]

N. TO

MEDIAL PTERYGOID

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Meter Brank

Med Perigora

Tensor Tynypon

Tens of halarym

neppered by aut t

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ADOMESSETER DEEP TEMPORAL Temporall

N.

<

ant

262

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ON to

Hepply

M

nortim

Censory

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BUCCAL song

LATERAL PTERYGOID

LINGUALN

N

[Ant 2/prd of Tongue gueras

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sensation].

Mandiluer

foramen.

INCISIVE Branch

Braucto invivor tea

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INFERIOR

ALYEOLAR

NERVE

MENTAL FORAMEN.

Mylohyoid N.

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MENTAL NERVE.

Ant belly of

MYLOMYDIA

MUSCLE

DIAGASTIC

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Motor

All N. of post-dry. are rensory except

JEUS.

26.-2019.

MAIN TRUNK

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SENSORY.

1. Neryou! spino nu

Ple

A.D. MOTOR.

1. Messeter

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2. deep Temporal
3. N. to Lateral Pterygaid

BIDHYAST Buccal N.

Semory.

1. In

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Amura MOTOR

FACIAL MUSCLES

MOUTH.

Mandiller

N

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to frontalus Frontal' ully

OSCALP Cocapito

Coccipital cully

TEMPORAL

EAR (aunce), Auriculars Anteval

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extra

1. Auriculeus supera. Vestigeal
2. Auriculens Poet

Arrau

1. Oribiculars oc? ? palpatras

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2. Corrugator supu cillu

prz

(wwer port-zygomatic

exsequunfo Levator palpeural superiors

C-N-3-

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CLAS

1. Procurus.

Br

UPPER

Lower

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1. Compressor nasis.
2. Dialator neris.
3. Depressos sept

1. Levator Lates
2. Levator Lale

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3. Levator Ange
4. zygomaticus
5. Zygomadicus
6. Bucca Bucunator.

MARGINALN

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MANDIBULAR

A. al

1. Risoril
2. Depressos Ang
3. depressar Lal

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4. Menraus
5. Oruiculars

NOSE

Upper

Buccal

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Nirve

Ny supply of utro occular MUSI.

AU SO LR-

LR-Lativas RicAY.

CN-3-4-CN.

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OLN

neperia alergu

NECK:

Plarysma]

it Marghal

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zygomatic

Ar of Devrait y

AL

mipraers

RULEN

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CN-VIL

sensory ROOTUOM

Lorcat FACIAL NERVE MOur Root - predaminin

develops

phomp

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MB

PONTO-

MEDULLARY

junckon.

Pons

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M-D

brancha

MOTOR ROOT

(Predominaw)

?

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No

Pterygera Lavimal

Canary Glaryd.

SENTORY

ROOT

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Great

perrasas

N

b) dylwia proun 1

mastaid procem.

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STYLO-MASTOID

FORAMEN

Occipitalis

Post belly of

DiGarric

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ONL TO STYLO

Videau's

ge Deep Perosal N.

ON. to stapedium

CHORAA

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TYMPANI Ny.

suu-mang

gland.

STYLOID

PROCESS

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Masteia

JAM

Tongue

FACI

Masteia

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TEMPORAL

sublingual

glada.

Car

Fi

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ZYGOMATIC zesra

BUCCAL

But

MARGINAL MY

MANDIBULAR

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? ?

?

CERVICAL Cat

PAROTIO

GLAND.

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F.N & ripply paralid by land.

F.N- givu 5 twinal branches here.

Bell's parry

fa

Tu

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Facial Nerve - after crossing styloid process:

Temporofacial Ny./

Gruico-facral

runk

Temporar

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Av

?

MO

Zygomatio

FACIAL MUSCLES. SFACIAL NERYE (Extra Cranial course)

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N-

qual

d.

Masteid

pr

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Cervico

Temporefacial Nerve.

styvard

FACIAL proien

Facial

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Narve

NERVE

0

?

Ar

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CERYILAL

Br

TEMPORAL Br.

ZYGOM ATIL

upper

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5

lower

AUCLU

N

BUCCIINATOR

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Frontalis.

corugator

supercicili

orbicon's

-NOH

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ors, wwn's

Ort's

A

plarysma.

Marginal

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Mandur

Nirve.

Facial Nirve - after woosting styloid process gives 260.

Temporafacial Ny./

Temporar

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2tr.

runk

Zygomatio

Av

Curuico-faval N.-3.68.

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T

?

Margines

Mandibular

Gruiu.

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CN-5 (OPTHALMIC JIYIHAN)-sensory

Opthalmrei

Division

1- Supra Trochleas

FRONTAL-

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supra-Orleitas

NASOCILIARY. Ompraronlear N.

content of

ant ethma

Foram

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CONTE Of

Foram

Ant. Ethmoidal N.

Post. Ethmoider N.

Long Ciliargn

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Br. to Ciliary Ganglion

CILIARY GANGLION & CN-TIL

related to Eye.

It is peripheripheral parasympathetic Ganglion

the in coure of OCCULOMOTOR NERYE (CN-III)

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the near apex of eye ouiit lecnveer OPTIC IN. A

Tendondon of Lateral Rectus M

ariver tra EDINGER WEST PHAL C

ROOH-1) Parasympathetec Rost: nucleus

i?) sensory root: arit trom TRIGEMIN

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-ALN. (Opthalmic bra,

Naso-Ciliary Branu

iii) sympathetic Root: formed by

Lateras norn as 7, spinal segment.

Supply 5 Murches

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OCCULOMOTOR

NUCLEUS

(CNY) MA

EDINGER

WESTANAL

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NUCUTOPONS.

PARASYMPATHETIC

NUCLEUS

OCULUMOTOR

NERYE

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uppu

dwir

MR

IR

10

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Lower awir

CNY

SENSORY

pregangeronic

NASO-CILIARY

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Root.

N

hout ganglioni

ate

SHORT-CILIARY NERUS

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(8-10)

supply silator Pupillar

SYMPATHETIC PLEXUS around

INTERNAL

CAROTIA ARTERY

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SUPERIOR

CERVICAL

SYMParmeni GANGLION

Thasall

tynu et

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fihre

Ny supply of Eye

CN-3

ALU SO

LRLateras

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nepmer

allique

MR-midras Rectus.

IR - unterior

10-

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