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Body Tissues

This guide explores the four fundamental types of tissues in the human body: epithelial, connective, muscle, and nervous tissues. Epithelial tissue covers surfaces and lines cavities, serving key functions such as protection and secretion. Connective tissue provides support, binds other tissues, and stores fat. Muscle tissue enables body movement, while nervous tissue facilitates communication within the body. Each tissue type exhibits unique characteristics and functions, essential for maintaining overall health and well-being.

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Body Tissues

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  1. Body Tissues pp. 85-97

  2. Epithelial Tissue • Locations: • Cover free body surfaces • Skin • Lines body cavities • Glands • Functions: • Protection • Absorption • Filtration • Secretion

  3. Epithelial Tissue, cont’d • Characteristics: • Cells are tightly packed • Two surfaces: • Free (apical) surface • Basement membrane – nonliving mat • Avascular • No blood supply • Mitotic

  4. Epithelial Tissue Types • Number of layers • Simple - one • Stratified – multiple • Shape • Squamous – flat tiles • Cuboidal - dice • Columnar - columns • Other • Pseudostratified columnar • Transitional - stretching • Glandular - secretion

  5. Connective Tissue • Location: • Widely distributed throughout the body – most abundant tissue • Functions: • Protection • Support • Binds together other tissues • Other • Stores fat and minerals • Produce blood cells • Transport

  6. Connective Tissue, cont’d • Characteristics: • Extracellular matrix – nonliving matter • Ground substance (glue) • Fibers (strength) • Varied blood supply • Mitotic

  7. Connective Tissue Types • Bone (osseous) • Cartilage • Dense connective tissue • Loose connective tissue • Areolar tissue • Adipose tissue • Reticular connective tissue • Blood

  8. Muscle Tissue • Locations: • Attached to bones • Heart • In the walls of hollow internal organs • Function: • Movement

  9. Muscle Tissue, cont’d • Characteristics: • Voluntary or involuntary • Mitotic or amitotic • Striated or not striated • One nucleus or several

  10. Muscle Tissue Types Skeletal Smooth Cardiac

  11. Nervous Tissue • Locations: • Brain, spinal cord, & nerves • Functions: • Irritability • Conductivity

  12. Nervous Tissue, cont’d • Characteristics: • Neurons have long processes • Amitotic

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