MEMBRANES & INTEGUMENTARY SYSTEM

MEMBRANES

Cover surfaces, organsLine body cavitiesProtect, lubricateTwo categories

- Epithelial tissue membranes- Connective tissue membrane

EPITHELIAL TISSUE MEMBRANES

Cutaneous

- Skin (“dry”)Mucous

- E.T. & C.T.

- “wet”; secretes mucus

- Lines open cavities

- Traps, lubricates, protects, secretes enzymes

EPITHELIAL TISSUE MEMBRANES continued

Serous- E.T. & C.T.- “wet”; secretes serous fluid; Lines

closed cavities- Folds to form two layers

*Parietal – lines wall of ventral body cavity

*Visceral – covers organs- Serous fluid between layers (lubricant)

EPITHELIAL TISSUE MEMBRANES continued

- Pleura

*Line pleural cavities

*Surround lungs

- Peritoneum

*Lines abdominal cavity & covers organs

- Pericardium

*Surround the heart

CONNECTIVE TISSUE MEMBRANE

Synovial

- C.T.

- Lines joint cavities (freely movable), bursae, tendon sheaths

- Synovial fluid lubricates & provides nutrients

Integumentary - General

Organ SystemDermatology –

Study of Skin Disorders

Integumentary - General

Largest organ by weightIncludes all 4 primary tissue typesAids in excretion of waste products

Integumentary - Structure

Cutaneous Membrane (Dry)2 Layers:

- Epidermis

- Dermis (with deeper hypodermis)Accessory Structures (glands, sensory

structures, etc.)

Skin StructureSkin Structure

Slide 4.13b

Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

Figure 4.4