UMBILICAL CORD

• Presence of two umbilical artery and one umbilical vein.


• Presence of Wharton's jelly.

PLACENTA

• Maternal blood and secretion of villi.


• Placental barrier seperating maternal blood and foetal blood.

TONGUE

• Lingual papilla and skeletal muscle in three direction.
• Four kinds of papilla: Filliform, Fungiform, Foliate & Circumvalate.
• First fig: Fungiform papilla.
• Second fig: Filliform papilla.

SUPRA RENAL GLANDS

• Outer cortex with three zones: Zona glomerulosa, Zona Fasciculata & Zona Reticularis.


• The suprarenal medulla is composed of groups and columns of Chromaffin cells.

PITUITARY GLAND

• Divided into three: Pars anterior, Pars intermedia, Pars posterior.


• Thrombocops and thrombopits are present.

THYROID GLAND

• Follicles with colloid materials.


• Cuboidal epithelium and para follicular cells.

LUNG

• Sections of alveoli with squamous epithelium.


• Intra-pulmonary bronchi & bronchioles.

TRACHEA

• Pseudostratified squamous columnar epithelium.


• 'C' shaped hyaline cartilage.

PANCREAS

• Islets of langherhans.


• It is both exocrine & endocrine gland.

OESOPHAGUS

• Form layers of gastro-intestinal tract.


• Oesophageal glands in submucosa.

MUCOUS SALIVARY GLAND

• Lightly stained mucus acini with few ducts.


• Peripherally placed nucleus.


• Eg: Sub lingual salivary gland.

MIXED SALIVARY GLAND

• More serous and less mucous acini.


• Serous demilunes.


• Arranged in lobes & lobules.


• eg: Submandibular salivary gland

SEROUS SALIVARY GLAND

• Darkly stained serous acini with plenty of duct.


• Sub centrally placed nucleus.
• Eg: Parotid Gland

THICK SKIN

• Only sweat gland is present.


• Thickening of stratified squamous epithelium.

THIN SKIN

• Epidermis & dermis with hair follicles.


• Sweat gland & arector pili muscles.