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Colleen Skin
Integumentary system
Question | Answer |
---|---|
4 main categories of tissues | Nerve, Epithelial, Connective, Muscular |
2 categories of membranes | Epithelial membranes and Fibrous connective tissue |
Produce a more watery, lubricating substance | Serous membranes |
3 types of skeletal membrane | Periosteum (bone), Perichondrium (cartilage), Synovial (joints) |
3 types of muscle tissue | Skeletal, smooth, cardiac |
Skeletal/voluntary | Attach to bone or other muscle by way of tendons and controlled by conscious effort |
Epithelial | Thin tissue layer that forms the skin, organ coverings and inner lining of all the hollow organs |
Fascia | Areolar connective tissue that forms a fibrous network that is continuous from top of skull to the tips of the toes and is throughout the body. Fibrous tissue between muscle bundles |
Synovial | Membrane lines the inner joint cavities |
Tendons | Bands that attach muscles to bones |
Epithelial tissue | Thin protective layer or covering that functions in the process of absorption, excretion, secretion and protection. |
Structures closely associated with epithelial tissues | Membranes |
Function of muscle tissue fibers | Contract their elongated cells which pulls attached ends closer together causing body part to move |
Smooth muscle tissue | Lacks striation and cannot by stimulated by contract by conscious effort |
Nervous tissue | Composed of neurons and is found in the brain, spinal cord and associated nerves; initiates, controls and coordinates the body adaptation to its surroundings; neurons for a nerve pathway |
Connective Tissue | Binds structures together, provides support and protection and serves as a framework |
Hemopoietc | Tissue found in bone marrow and vascular system |
Areolar | Loose connective tissue abundance of collagen and elastic fibers |
Adipose | Loose connective tissue containing fat cells |
Reticular | Loose connective tissue that provides framework of liver and other lymphoid organs |
Fibrocartilage | found between the vertebrae and in the pubic symphysis where strong support and minimal ROM is required, damage tissue is slow because of low vascularity |
Hyaline | Cartilage consisting of fine white fibers |
Elastic | Elastic fibers in the matrix |
Deep Facia | Covers each muscle fiber (endomysium), muscle fascicles (perimysium) the muscle (epimysium) and groups of muscles (investing fascia) |
Bone | Tissues is connective in which intercellular substance is rendered hard by being impregnated with mineral salts |
Dentne | Substance beneath the enamel fo the teeth. no distinct cells or blood vessels |
Liquid connective tissue | Is represented by blood, lymph and interstitial fluid |
Skin | largest organ of the body and serves as an interface with the environment and protection for the body. |
Principle functions of skin | Protection, heat regulation, sensation, secretion/excretion, absorption and respiration |
Epidermis | outermost layer of the skin; thickest on hands/feet, thinnest inside of limbs |
Dermis | Deeper layer that extends to form the subcutaneous tissue |
Collagen | Makes up 70% of dry weight of the skin and gives it strength , form and flexibility |
Subcutaneous tissue | continuation of the dermis varies in thickness according to age, sex and general health of the person |
% of blood supply to body distributed to the skin | half |
2 types of glands of the skin | Sudoriferous (skin) and Sebaceous (sweat) |
It is controlled by the Autonomic system and is located in the dermis | Sweat glands |
Name 2 appendages of the skin | Hair and nail composed of hard keratin a protein that in its soft form is found in the skin |
Arrector pili muscles | fan like muscles that react to cold or emotional stimuli i.e. goosebumps |
Scar | Forms after the healing of an injury or skin condition that has penetrated the dermal layer |
Ulcer | Open lesion on skin or mucous membrane of the body accompanied by pus and loss of skin depth |
Acne | Chronic inflamatory disorder of the skin related to hormonal changes and overactive sebaceous glands during adolescence |
Basal cell carcinoma | Least malignant and most common skin cancer. |
Contact dermatitis | Abnormal conditions resulting from contact with chemicals or other exterior agents |