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MUSCULAR, SKELETAL, AND INTEGUMENTARY SYSTEMS

Body organization. Cells ? Tissues ? Organs ? Organ Systems ? Organism. 4 Types of TissueConnective Tissue-Support, protect, and insulate- blood, bone Nervous Tissue- nerve cells and their supporting cells.Muscle Tissue- 3 types (smooth, cardiac, skeletal) to hold body together and permit motionEpithelial Tissue-lines and protects most of the parts of the body..

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MUSCULAR, SKELETAL, AND INTEGUMENTARY SYSTEMS

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    1. MUSCULAR, SKELETAL, AND INTEGUMENTARY SYSTEMS

    2. Body organization Cells ? Tissues ? Organs ? Organ Systems ? Organism

    4. Summarize the importance of skin in maintaining homeostasis in the body. The integumentary system has multiple roles in homeostasis, including protection (immune and defense??), temperature regulation, sensory reception, biochemical synthesis, and absorption. Not to mention keeping the body and its cells from drying out. Its parts are skin, hair, and nails. Largest organ of the body (~15% total body weight)

    5. Identify the different layers of the skin and their components

    6. Epidermis: Outer layer Protects against infection Thin layer of flattened, dead cells containing keratin- helps water proof the skin and protect living cells Melanocytes- determine skin color through the production of melanin. Cells live for 1 month dead cells are constantly coming off.

    8. Vitamin D When exposed to ultraviolet light, skin cells produce vitamin D, a nutrient that aids the absorption of calcium into the bloodstream.

    9. Identify the major cause of skin cancer Skin cancers are a rapidly growing portion of all cancers diagnosed each year. Increased sun exposure and a decreased ozone layer are a major cause of cancer.

    10. 3 Major Kinds of Skin Cancer Basal Cell Carcinoma Squamous Cell Carcinoma Melanoma

    11. Skeletal System Function of Skeleton: Support Protection Assists in movement Storage of minerals Production of blood cells Storage of chemical energy

    12. Two Major Divisions Axial: skull and supportive bones such as vertebrae, ribs, and sternum Appendicular: Bone of the arms, legs, shoulder, pelvic girdle

    13.

    14. Structure of the bones: Bones grow from their ends, in the cartilage plates Bone marrow found in the middle of bones produces red and white blood cells Main types of bone tissue: Compact Bone – Hard, compact outer covering of bones which provide the greatest strength Sponge Bone – Less dense inside layer of bones with lots of holes

    15. Types of Joints

    16. Types of connective tissue Cartilage-bears mechanical stress without distortion. Ligament-tough band that connects bones to bones. Tendon-thick band that attach muscle to bone.

    17. Objective 5

    18. Disorders of the Skeletal System Leukemia- a kind of cancer in which abnormal white blood cells multiply in an uncontrolled manner. Osteoporosis- a disease resulting in the loss of bone tissue. The cancellous bone loses calcium, become thinner and may disappear altogether. Fracture- broken bone.

    19. Types of fractures

    20. 3 Types of Muscle Skeletal Muscle Skeletal movement Attached to bones Contractions are short and strong Maintain body temperature Supports soft tissue (gut) Voluntary muscle

    21. Smooth Muscle Found in internal organs and blood vessels. Made up of sheets of cells ideally shaped to form a lining for organs. (digestive, reproductive tracts). Contractions slow and prolonged. Squeezes, exerts pressure on organ it surrounds

    22. Cardiac Muscle Found only in the heart. Involuntary Adapted to conduct the electrical impulses necessary for rhythmic contraction. Slow to fatigue

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