TEMA 23: Histología de los

Órganos Linfoides

Prof. Carlos Mendoza Gaviria

ÓRGANOS LINFOIDES

LINFOCITOS Y TEJIDO LINFOIDE

TIMO

TIMO

TIMO

TIMO

TIMO: Corpúsculos de Hassal

TIMO: Corpúsculos de Hassal

TIMO: Corpúsculos de Hassal

TIMO: CÉLULAS RETICULARES EPITELIALES (ESTROMA)

BARRERA HEMATO-TÍMICA

BAZO (SPLEEN)

BAZO: Anatomía Vascular

BAZO

Bazo

Bazo: Cápsula esplénica

Bazo: Pulpa Roja (RP) y Pulpa Blanca (WP)

BAZO

Bazo: Pulpa roja y Pulpa blanca (arteriola central)

1 - germinal center of the follicle

2 - mantle zone of the follicle

3 - marginal zone of the follicle

4 - periarterial area of the follicle

5 - central arteriole

6 - red pulp

7 - trabeculae

BAZO

Bazo: Nódulo linfoide y fibras reticulares

Bazo. Pulpa roja: Capilar sinusoide y cordones celulares

Bazo: Pulpa roja.

Cordones Esplénicos

The splenic cords (Billroth cords) are composed of :

•reticular cells and fibers

•fixed and wandering macrophages

•lymphocytes

•plasma cells

•blood cells (erythrocytes, granulocytes) and platelets

Bazo. Arteria envainada

GANGLIOS LINFÁTICOS

GANGLIOS LINFÁTICOS

I--Submental and submandibular nodes

II--Upper jugulodigastric group

III--Middle jugular nodes draining the naso- and oropharynx, oral

cavity, hypopharynx, larynx.

IV--Inferior jugular nodes draining the hypopharynx, subglottic

larynx, thyroid, and esophagus.

V-- Posterior triangle group

VI--Anterior compartment group

GANGLIOS LINFÁTICOS

GANGLIOS LINFÁTICOS

GANGLIOS

LINFÁTICOS

GANGLIOS LINFÁTICOS

GANGLIOS LINFÁTICOS

1 - cortex

2 - paracortical zone

3 - medulla

4 - medullary cords

5 - lymphoid follicle of the cortex

6 - capsule

GANGLIOS LINFÁTICOS

GANGLIOS LINFÁTICOS

GANGLIOS LINFÁTICOS

GANGLIOS LINFÁTICOS

GANGLIOS LINFÁTICOS

Large non-cleaved B cell (centroblast)

Large cleaved B cell (centroblast)

Small cleaved B cell (centrocyte)

Immunoblast

GANGLIOS LINFÁTICOS

Zona del Manto Folicular (MZ)

GANGLIOS

LINFÁTICOS

GANGLIOS LINFÁTICOS

GANGLIOS LINFÁTICOS

M: mucosally

A: associated

L: lymphoid

T: tissue

skin-associated lymphoid tissue (SALT)

gut-associated lymphoid tissue (GALT)

bronchus-associated lymphoid tissue (BALT)

1. Pharyngeal Tonsil

2. Palatine Tonsil

3. Lingual Tonsil

4. Epiglottis

Amígdalas

Amígdala Palatina

Amígdala Palatina