Epithelial Tissue Overview

Epithelial Tissue

• Artery: Small and regular lumen, thin wall.
• Vein: Large and irregular lumen, thin wall.
• Blood Vessel (Aorta): Contains simple squamous epithelium (endothelium). Also has a layer of flat epithelium.

Kidney (Renal Corpuscle)

• Place of filtration of blood: Simple squamous epithelium (Bowman's capsule).
• First Part of Nephrons: Covered by two membranes.

Peritoneum

• Peritoneum (Peritoneal membrane): Simple squamous epithelium (mesothelium).

Renal Tubules (Kidney)

• Renal tubules (kidney): Simple cuboidal epithelium.

Intestinal Villi (Intestine)

• Intestinal villi (Intestine): Simple columnar epithelium with oval nuclei. Finger-like projections important for absorption.

Trachea

• Trachea: Pseudostratified ciliated columnar epithelium (part of the respiratory system).

Esophagus

• Esophagus: Stratified squamous nonkeratinized epithelium.

Skin (Epidermis)

• Thick skin (Epidermis): Keratinized stratified squamous epithelium.

Urinary Bladder

• Urinary bladder (urinary tract except kidney): Transitional epithelium.

Intestinal Villi (Goblet cells)

• Intestinal villi: Goblet cells are unicellular glands.

Mammary Gland (Apocrine)

• Mammary Gland (Apocrine): Secretory units (acinus).

Skin (Sebaceous glands)

• Sebaceous glands (cluster): Simple branched acinar glands in the dermis.

Thyroid Gland

• Thyroid gland: Thyroid follicle, connective tissue, and blood vessel.

Pancreas

• Pancreas (exocrine): Pancreatic acini, glandular acini, acinus, alveoli, and alveolus. Secretion of enzymes.

Intestine (Intestinal Glands)

• Intestinal Glands: Goblet cells, cilia, lamina propria, and inflammatory cells.

Sweat Gland

• Sweat Gland: Ductal part of sweat gland, secretory part, and connective tissue.

Stomach (Gastric Glands)

• Stomach: Simple columnar epithelium, and gastric glands.

Mammary Gland (Glandular Lobules)

• Mammary gland (exocrine): Glandular lobules; active versus inactive acini.

Submandibular Salivary Gland

• Submandibular Salivary gland: Ductal portion lined by simple cuboidal epithelium; serous acini.

This quiz covers the various types of epithelial tissue, including their structures and locations in the human body. Topics include the characteristics of epithelial tissues in the arterial and venous systems, kidneys, respiratory tract, and digestive system. Test your knowledge on the functions and importance of these tissues in different organs.