Equine Science: The Integument Part I

These flashcards cover key terms and concepts related to the integument in equine science, including structure, function, and related conditions.

Integument

The largest organ of the body, making up 12-24% of body weight, with various important functions.

Functions of the Integument

Includes barrier to pathogens, waterproofing, mechanical injury resistance, osmotic regulation, heat gathering/radiation, and housing sensory receptors.

Epidermis

The outermost layer of skin consisting of stratified squamous epithelium, which is avascular and contains several distinct cell layers.

Keratinocytes

Cells that make up 90% of epidermal cells, arranged in layers, producing keratin and water-repellent lamellar granules.

Melanocytes

Cells in the epidermis that produce melanin, accounting for skin pigmentation and protection against UV light.

Albinism

An inherited disorder characterized by a complete absence of melanin, resulting in white hair, skin, and irises.

Vitiligo

A condition marked by the partial or complete loss of melanocytes, producing white patches on the skin.

Dermis

The middle layer of the skin, containing blood vessels, nerves, and connective tissue; divided into papillary and reticular layers.

Subcutaneous Layer

The layer beneath the dermis that stabilizes skin position against underlying tissues and contains fat cells.

Alopecia

Partial or complete loss of hair which may result from genetic factors, aging, or various disorders.

Sebaceous Glands

Oil glands in the skin that secrete sebum to lubricate hair and skin.

Anhidrosis

A condition where horses fail to sweat, requiring cooler environments to alleviate stress.

Layers of the Hoof

Includes perioplic corium, coronary corium, laminar corium, frog corium, and solar corium.

Dental Anatomy

Teeth are integrally connected to the integument, with a structure including enamel, dentin, and pulp.