Animal Tissues.pdf

Animal Tissues 1. Epithelial Tissue Thin, protective continuous sheet of cells Covers the surface of the body and lines various body cavities a...

Animal Tissues 1. Epithelial Tissue Thin, protective continuous sheet of cells Covers the surface of the body and lines various body cavities and internal… Characteristics of Epithelial Tissue Cells may be flat, cuboidal or columnar in shape Cells fit tightly together with no space between them Protection (e.g., skin) Functions of Epithelial Tissue Absorption and secretion (e.g., intes… Sensory perception Composed of thin, flat cells with prominent nuclei Squamous Epithelium Protects underlying parts from mechanical injury, germs, chemicals, and… Found lining the mouth, nasal cavities, blood vessels, and lymph… Found in kidney tubules and glandular ducts (e.g., salivary… Cuboidal Epithelium Cells are cube-shaped Cells are tall and cylindrical or brick-like Types of Epithelial Tissue Found in the inner lining of the stomach and in… Columnar Epithelium Ciliated columnar epithelium (e.g., tra- lining) chea Includes: Glandular epithelium (e.g., stomach intestine and lining) Composed of several layers (strata) of the same or different kinds of epithelial… Stratified Epithelium Found in the skin and cornea 2. Connective Tissue Abundance of intercellular substance (matrix) Characteristics of Connective Tissue Fewer cellular elements Presence of fibers Binds one tissue with anoth… Functions of Connective Tissue Connects various organs, keeping them in their proper… Areolar (packing) tissue Connective Tissue Proper Includes: Adipose (fat) tissue Fibrous connective tissue Cartilage Types of Connective Tissue Supportive Connective Tissue Bone Blood Fluid Connective Tissue Lymph 3. Muscle Tissue Under the control of the will Made of long, nucleated, and striated (light and dark bands)… Striated (Skeletal, Striped, or Voluntary) Muscles Constitute about 50% of the body weight Found in the arms, legs, face, neck, etc. Not under the control of the will Unstriated (Smooth, Unstriped, Involun- Types of Muscle Tissue Muscles Made of spindle-shaped, slender, tapering, uninucleated cel… tary) Found in the walls of the intestine, iris of the eye, skin, blood vessels, urinary bladder, uterus,… Involuntary in function Found only in the walls of the heart Cardiac Muscles Fibers are striated, uninucleated, and… Can contract without outside stimulation and do not get tired… 4. Nervous or Neural Tissue Constitutes the nervous system Made up of specialized cells