1. Stratified Squamous Epithelium:
* Location: Skin, lining of the mouth, esophagus, anus, vagina
* Function: Provides a tough, protective barrier against abrasion, physical damage, and pathogens. This type of epithelium is often keratinized (containing keratin) for added strength and water resistance.
2. Simple Columnar Epithelium:
* Location: Lining of the stomach, intestines, and uterus
* Function: Absorption of nutrients, secretion of digestive enzymes and mucus. The columnar shape provides a large surface area for these functions.
3. Pseudostratified Ciliated Columnar Epithelium:
* Location: Lining of the trachea (windpipe) and bronchi of the respiratory system
* Function: The cilia (tiny hair-like projections) on the surface of these cells move in a coordinated wave-like motion to sweep mucus and foreign particles upwards, preventing them from entering the lungs.
4. Transitional Epithelium:
* Location: Lining of the urinary bladder, ureters, and renal pelvis (part of the kidney)
* Function: Allows the bladder to stretch and expand as it fills with urine. The cells can change shape (transition) to accommodate the volume change.
5. Simple Cuboidal Epithelium:
* Location: Lining of some glands (e.g., salivary glands), kidney tubules, and the surface of the ovaries
* Function: Secretion of substances (e.g., hormones, saliva), absorption, and excretion.
Important Note: This is a general overview. The specific locations and functions of epithelial tissues can vary slightly within different parts of the horse's body.