Unit 18 ? Animal Histology All animals are made of cells organized into tissues. Essentially there are four types of tissues with numerous variations of each. Combinations of these tissues make organs and they go together to make organ systems. The study of tissues is called histology. The 10 Organ Systems and Their Basic Functions System Organs Functions Integumentary Muscular Nervous Endocrine Circulatory and Lymphatic Respiratory Excretory Digestive Immune Reproductive The 4 Tissue Types Epithelial Connective Muscular Nervous Epithelial Tissues- These tissues form sheets or layers covering surfaces or lining cavities. ** . Structure includes a ____________________ on a protein _______________________ Types of Epithelia Squamous- simple squamous- stratified squamous- Columnar- Goblet cells- Cuboidal ? Pseudostratified- Glands- defn: cellular gland- tubular gland- compound gland- Connective Tissues Connective tissues build the framework upon which all the other tissues attach- the ____________ Structure of these tissues includes ________________________________ living in a non-living ______________ made of protein Matrix Fiber Materials Cell Types collagen elastin reticular fibers Fibrocytes pericytes Macrophages Mast cells Adipose cells Plasma cells The Eight Types of Connective Tissues- name location composition function diagram Loose Connective Tissue Dense Connective Tissue Elastic Connective Tissue Reticular Connective Tissue Adipose Tissue Cartilage Hyaline matrix with chondrocytes in lacunae Bone Osteon units fed by Haversian systems Haversian canal- Canaliculae- Osteocytes lamella (calcium) Blood Muscle Tissues There are three types of muscle *** . Basic structure- Sarcomeres of actin and myosin( myofibrils (muscle belly ( muscle system 3 Types of Muscle Skeletal muscle Smooth Muscle Cardiac Muscle Intercalated discs Nervous Tissue- makes up the brain, CNS and peripheral nerves Composed of neurons, schwann and glial cells neurons- glial cells- schwann cells- PAGE PAGE 7
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