1 / 27

Cells are organized into tissues Epithelial- protection, secretion, absorption surfaces (of body, organs) glands Conne

Cells are organized into tissues Epithelial- protection, secretion, absorption surfaces (of body, organs) glands Connective- support, adhesion widely distributed Muscle- movement heart; internal organs; attached to bone Nervous- sensory input and output

jerome
Download Presentation

Cells are organized into tissues Epithelial- protection, secretion, absorption surfaces (of body, organs) glands Conne

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Cells are organized into tissues Epithelial- protection, secretion, absorption surfaces (of body, organs) glands Connective- support, adhesion widely distributed Muscle- movement heart; internal organs; attached to bone Nervous- sensory input and output brain, spinal cord, peripheral nerves

  2. Epithelial tissues “sheets of cells” form barriers Secretion (exocrine glands) Absorption (specialized membrane) Transport Classified by shape

  3. Squamous epithelium Simple- single layer of flattened cells diffusion (alveoli) filtration (blood vessels)

  4. p. 93

  5. Simple cuboidal Cells are more “cubelike” than squamous cells Cover ovaries; line kidney tubules; various endocrine glands Secretion, absorption

  6. Simple columnar epithelium Uterus, digestive tract Absorption (of food) Secretion (of digestive enzymes, acids, etc.) Goblet cells secrete mucus May have microvilli Glandular epithelium generally is columnar or cuboidal (exocrine, endocrine)

  7. Pseudostratified columnar epithelium Cilated; also contains goblet cells Lines respiratory passageways Specialized to trap and remove airborne particles

  8. Stratified epithelium Where “wear and tear” occur Stratified squamous outer layers are keratinized in skin not on internal surfaces: mouth, throat, vagina, anus Stratified cuboidal- certain glands Straitified columnar- urethra, vas deferens Transitional epithelium- bladder allows bladder to stretch

  9. Connective tissues are the most diverse in form and function Generally a few cells scattered in an extracellular matrix Matrix: fibers and ground substance, either fluid, flexible or rigid (Fluid: blood, lymph Flexible: loose connective tissue, adipose, dense Rigid: bone, cartilage)

  10. Fibroblasts: produce fibers that anchor the matrix Macrophages, mast cells- involved in immune response What kind of fibers? collagen, esp. in tendons and ligaments elastic fibers- in “stretchy” parts of body reticular fibers

  11. Loose connective tissue Underneath most epithelium Well vascularized

  12. Dense connective tissue Tendons, ligaments, deep layers of skin Poorly vascularized

  13. Adipose tissue Energy storage, insulation, cushioning

  14. Cartilage Hyaline-associated with bones Elastic cartilage- larynx, ears Fibrocartilage- vertebrae, knees, pelvis

  15. Bone-matrix is mineralized Well nourished nonetheless

  16. Membranes comprised of epithelium and connective tissue (usu. loose) Cutaneous- outermost membrane (skin) Serous- sealed body cavities (thoracic, abdominal, etc.) Mucous- line structures with access outside the body (respiratory, digestive, repro- ductive Synovial- between/within joints

  17. Blood- liquid matrix Supportive, in a way Important for homeostasis

  18. Muscle is specialized for contraction Three types- skeletal, smooth voluntary Differ in distribution, mechanism of contraction and regulation

  19. Skeletal muscle- voluntary, striated

  20. Smooth muscle- internal organs Involuntary, not striated

  21. Cardiac muscle Cells are branched and striated Involuntary control

  22. Nervous tissue Neurons, glial cells Neurons transmit electrical signals Glial cells provide support functions

  23. Organs contain all the tissues Epithelium- protective surface, absorption, secretion where appropriate Connective tissue- hold organ together Muscle (depending on organ) – whatever type of contraction or movement Nervous- sensory and motor response

More Related