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Understanding Tissues in the Human Body: Types and Functions

Learn about the various types of tissues in the human body, including epithelial, connective, muscle, and nervous tissues, and their functions. Explore the classification of tissues based on shape and arrangement. Discover how tissues play essential roles in protection, absorption, secretion, excretion, and more.

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Understanding Tissues in the Human Body: Types and Functions

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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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