Foundations 1-Chapter 6 (Patton)

Foundations 1-Chapter 6 (Patton)

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Body Membranes

Two Major Categories:

Epithelial Membranes

Connective Tissue Membranes

Epithelial Membranes

3 Types:

Cutaneous Membranes

Serous Membranes

Mucous Membranes

Cutaneous Membrane

The skin is the primary organ of the integumentary system.

One of the most important and one of the largest organs of the body.

Composes 16% of body weight.

Serous Membrane

Contains 2 layers:

Parietal: lines walls of a body cavity

Visceral: covers the surface of the organs

Pleura and Peritoneum

Pleura: Serous Membrane around each lung

Peritoneum: Serous Membrane covering most of the organs

Pericardium

Fibrous sac lined with a thin, slippery membrane that doubles back on itself, forms a fluid-filled pocket with 10-50ml of fluid

Pleurisy or Pleuritis

Painful condition characterized by inflammation of the serous membrane (pleura) that line the chest cavity and covers the lungs

Peritonitis

Inflammation of the serous membranes in the abdominal cavity. Can be a serious complication of appendicitis.

Mucous Membranes

Epithelial membrane that contain both an epithelial layer and a fibrous connective tissue layer.

Secrete a thick, slimy material called mucus that keeps the membranes moist and soft.

Connective Tissue Membranes

Do not contain epithelial components.

Smooth and slick and secrete a thick, colorless lubricating fluid called synovial fluid.

Helps reduce friction between opposing surfaces of bones in moveable joints.

The Skin

Epidermis: outermost layer of the skin

Dermis: Under the epidermis, made up largely of connective tissue

Subcutaneous layer: loose connective tissue and fat, insulates the body from heat and cold, serves as a stored energy and a shock absorber

Skin Pigment

The deepest cell layer of the stratum germinativum is responsible for the production of pigment that gives color to the skin.

The brown pigment, melanin, is produced by cells in this basal layer called melanocytes.

The amount of melanin in your skin depends first on your genes. Prolonged exposure to sunlight can increased melanin production.

Skin Disorders

Partner up, look up a skin disorder and be ready to discuss:

1. The name of the disorder

2. The population the disorder affects the most

3. Causes of the disorder

4. How the disorder is treated

5. The nursing implications for the disorder (patient teaching, nursing diagnoses, nursing care)

Dermal-Epidermal Junction