Histology

what is this … ?

Mitochondria

1- cis face of Golgi.

2-Trans face of Golgi.

3. Mitochondria.

1-RER

2-Nucler Envelope

3-chromatin

4-Nucleolus

Simple cuboidal epithelium

Thyroid follicles

Simple squamous epithelium

Endothelium

Simple cuboidal epithelium

(Thyroid follicles)

Simple columnar

epithelium non ciliated

(Gall bladder)

RER

RER
SER

1-RER

2-Mitochondria

3-Nucleus

4-Lysosomes

Golgi apparatus

Lysosomes

cell membrane

1: cholesterol molecule.

2: Glycocalyx.

3: transmembrane integral protein.

4: peripheral protein .

5: integral membrane protein

Non keratinized stratified squamous epithelium

(Mouth cavity)

keratinized stratified squamous epithelium

(skin)

Large intestine

Simple tubular glands with goblet cells

somniferous tubules

Germinal epithelium

Mast cell

1- Nucleus

2- Basophilic granules

3-lymphocytes

Mast cell

1- Nucleus

2- Basophilic granules

Plasma cell

1-Nucleus with cart-wheel chromatin pattern

2-RER

Plasma cell

1- Nucleus with cart-wheel chromatin pattern

3- Basophilic cytoplasm

4-Negative Golgi image

Macrophage

1.Eccentric kidney shaped nucleus

2.Numerous lysosomes

3.Multiple pseudopodia

Elastic CT (H&E)

the 2 arrows to the left are elastic fibers

the others are fibroblast

(White fibrous CT)

1-Rows of fibroblasts (tendon cells)

2-Wavy bundles of collagen fibers

(White fibrous CT)

1-Rows of fibroblasts (tendon cells)

2-Wavy bundles of collagen fibers

3-Little intercellular substance

Adipose CT

1- Eosinophil. 2- Neutrophil. 3- Erythrocyte. 4- Lymphocyte. 5- Blood platelets. 6- Monocyte. 7- Basophil.

skeletal muscle

skeletal muscle

Skeletal muscle

1. Skeletal muscle fibers. 2. Peripheral subsarcolemmal nuclei. 3. Sarcoplasm. 4. A band. 5. I band. 6. Endomysium. 7. Z lines.

smooth muscle

blood vessel

1- Tunica intima 2- Tunica media 3- Tunica adventitia 4- Smooth muscle fibers 5- Endothelium

Continuous blood capillaries

1- Pericyte

2- RBCs

3- endothelial cell (capillary wall cell)

Fenestrated capillary

the arrows point towards (Fenestrations)

Thick skin

Mention 2-3 diagnostic features of Thick skin

Dermo-epidermal interdigitation are regular and deep

large number of sweet glands

absence of hair follicle and sebaceous glands

thin skin

Mention 2-3 diagnostic features of thin skin

little amount of sweet glands

presence of hair follicles and sebaceous glands

Dermo-epidermal interdigitation are irregular and shallow

Thick skin

1- Stratum corneum.

2- Epidermis

3- Dermis.

LM picture of thin skin

1- Hair follicle. 2- Sebaceous gland. 3- Sweat gland.

LM of perkinji fibers

H&E V.V.G Orcein stains

TS LM of skeletal muscle

thick skin

1-S.spinosem

2-S.granulium

3-S.cornem

4.swear pores

5.s.lucidum

6-S.basel

7-Nerve

A-Langerhans cell

B-melanocyte

C-Markell cell