Respiretory System

by :histology lab(SH).

Nasal cavity(nose)

Larynx

False vocal cord = true vocal cordventricle

Vocalis muscle

vocal ligament

(Vestibular fold)

Vestibular fold vocal ligament(False vocal cord )

Seromucous gland

Ventricularfold

Thyroid Hyaline Cartilage

vocal ligament

St.squ.epith.

(Elastic fibers)

true vocal cord

Vocalis

muscle

Vocalis

muscle

RESPIRATORY EPITHELIUM

False vocal cord :_ RESPIRATORY EPITHELIUM

Serous gland

RESPIRATORY EPITHELIUM

2

C-SHAPE TRACHEA-transeverse section

ESOPHAGUS-posteriorly

1

TRACHEALIS (SMOOTH) MUSCLE

HYALINE CARTILAGE

TRACHEALIS (SMOOTH) MUSCLE

MUCOSA ,SUBMUCOSA,CARTILAGE.ADVENTITIA

4 3 2 1

PERICHONDRIUM

RESPIRATORYEPITHELIUM TRACHEAL GLAND IN SUBMUCOSA

HyalineCartilage

ADVENTITIA

BASEMENT MEMBRANEGOBLET CELL

seromucous Gl.

EXTRAPULMONARY

BRONCHUS

TRACHEA

EXTRAPULMONARY BRONCHUS;(astrachea)except cartilage is segmented

LUNG TISSUE

LUNGTISSUE

INTRAPULMONARY BRONCHUS(LARGE)

H.C

H.C. LYMPH. SM. RESP.EP

GLAND

PSEUDOSTRATIFIEDCOLUMNAR CILIATED +GOBLET CELL

SM

LYMPH

INTRAPULMONARY BRONCHUS-

LARGE

LUNG TISSUE

INTRAPULMONARY BRONCHUS:

SMALL LARGE

SMALL

INTRAPULMONARY BRONCHUSPULMONARY VESSEL

TERMINAL BRONCHIOLEs

SIMPLE COLUMNAR CILIATED EP.

Lamina propria

SIMPLE COLUMNAR CILIATED EP.

SM

Respiretory bronchioles in lung tissue

pleura

Respiratory bronchiole open to alveolar duct

Alveolar duct

atria

.T.

Pulmonary arterys.m.

Bronchial wall:

Simple cuboidal ciliated ep.

Clara cell(non-ciliated)

Smooth muscle

Clara cell

Simple cuboidal ciliated ep

Alveolarduct

sac

Alveolarsac

Alveolus

Alveolar wall: =septum

Alveolar septum epithelial cells:-

Type 2(surfactant)

Endothelial cell

capillary

pneumocyteType1

Type 2(surfactant)

pneumocyteType1

capillary

Endothelial cell

Intra-alveolarmacrophage

visceral pleura:Serous membrane(mesothelium)

C.T.Elastic fiberscollagen

B.V.

B.V.B.

c.c.

Alveolar macrophage= dust cells