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Tissues of the Body

Tissues of the Body. Classified by shape and arrangement. Types of tissue. Epithelial. Epithelial. Functions:

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Tissues of the Body

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  1. Tissues of the Body

  2. Classified by shape and arrangement

  3. Types of tissue

  4. Epithelial

  5. Epithelial • Functions: • 1) Protection:  covers body and lines all body cavities;  provides a protective shield for underlying tissues         (e.g.  epidermis) 2) Absorption:  in some parts of the body it takes in certain materials (e.g. digestive tract) • 3) Secretion:  in some parts of the body epi. tissue is specialized to secrete certain products         E.g. small intestine:  some cells are specialized to secrete mucus • 4) Excretion:  in the kidney cells rid the body of materials • 5) Surface transport:  cilia on cells in the lungs move mucus and particles up and out • 6) Sensory functions:  Ex. taste buds in the mouth

  6. Epithelial • Stratified Transitional – many layers of cuboidal cells that flatten when stretched. Found in ureters, bladder and urethra. • Pseudostratified columnar – cells are long and thin, look stratified but aren’t. Has cilia. Makes and secretes mucus. Found in Trachea, bronchi, nasal cavity, auditory tube.

  7. Connective

  8. Areolar – matrix of soft, sticky glue

  9. Adipose – matrix of space and lipids

  10. Bone – matrix of calcium and osteons

  11. Fibrous – loose – matrix of collagen

  12. Hemopoietic – matrix is liquid (plasma)

  13. Connective • Most have some sort of matrix, an intercellular material found between the cells consisting of fluids, fibers, and proteins. • Function: varies depending on the structure and appearance of the tissue. Most help with support framework and transport.

  14. Muscle Tissue • Cardiac Smooth Skeletal

  15. Cardiac • Striated • Branched • Inrercalated disks • Involuntary

  16. Smooth • Involuntary • Not striated • Long, narrow fibers • Single nuclei

  17. Skeletal • Multinucleated • Striated • Voluntary

  18. Muscle Tissue • Function: movement of the body. Have the ability to shorten.

  19. Nervous • Functions in rapid • Communication and • Control of the body

  20. Neuron • Conducting units

  21. Neuroglia • Connecting and supporting cells

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