BIO 1030 Lecture Notes - Lecture 40: Nervous Tissue, Muscle Tissue, Collagen
18 Apr 2017
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Document Summary
Group of similar cells performing a similar function: organ. Contain different types of tissues each performing to aid in the overall action of the organ: organ system, organism. Covers the body surfaces and lines body cavities: connective tissue. Binds and supports body parts: muscle tissue. Moves the body and its parts: nervous tissue receives stimuli and conducts nerve impulses. Epithelial tissue protects: also called epithelium, forms external and internal linings of many organs, covers surface of body, adhere to one another but are generally only one cell layer, protective function. Substances have to physically pass through epithelial cells to enter body: differentiated by shape. Columnar rectangular pillar or columns (allow the movement of material: one or more epithelial cells are the primary components of glands (produce and secrete products) Epidermis: outer region of skin, stratified (layered, cell reinforced with keratin for strength and waterproofing, protection from injury, drying out, and pathogen.
