1 / 20

Tissue Basics: Structures, Functions, and Types

Explore the world of tissues - group of cells with specialized functions. Learn about epithelial, connective, muscular, and nervous tissues along with their characteristics and functions. Dive into the cell classifications and examples of each tissue type.

jeanhayes
Download Presentation

Tissue Basics: Structures, Functions, and Types

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. Totally Terrific Tissues

  2. Tissues • A group of similar cells that work toward a common structure and function.

  3. Cell Physiologymost cells in a tissue will: • Exhibit irritability (respond to a stimulus) • Digest food • Excrete wastes • Reproduce • Grow • Metabolize Cells of a specific tissue type have additional specialized functions.

  4. THERE ARE 4 TYPES OF TISSUE • 1. EPITHELIAL • 2. CONNECTIVE • 3. MUSCULAR • 4. NERVOUS

  5. I. EPITHELIAL • Makes Linings, coverings, and glandular tissue 4 Functions: 1.Protection: Skin 2.Absorption: Food 3.Filtration: Cilia 4.Secretion: Oil, Sweat

  6. 5 Characteristics 1.Cells fit closely together in sheets or membranes 2.Always have one unattached (free) surface 3. Lower surface rests on a basement membrane 4.No blood supply of their own 5.Can Regenerate easily when nourished

  7. 2 Ways to Classify 2.Cell Shape • Squamous: Flat, like fish scales • Columnar: Columns • Cuboidal: Cubes, dice

  8. 2. Cell Arrangement Simple: one layer Stratified: more than one layer Classification (cont.)

  9. 2. Connective Tissue 3 Functions • Connects body parts • Supports • Binds 2 Characteristics • Most have blood supply • EXCEPT: tendons, ligaments, cartilage • Connective cells make a non-living substance , called the matrix, that can be liquid, soft, or hard

  10. 5 Examples of Connective Tissue 1. Bone (Osseous) • Bone cells live in cavities. • They secrete a hard substance

  11. 5 Examples of Connective Tissue 2. Cartilage • Larynx, attaches ribs to sternum, covers bone ends, external ear, vertebral discs

  12. 5 Examples of Connective Tissue 3. Dense Connective • Strong and rope-like • TENDONS: Connect bone to muscle • LIGAMENTS: Connect bone to bone

  13. 5 Examples of Connective Tissue 4. Loose Connective • Packing tissue, glue, squishy protection, insulation • ADIPOSE = FAT

  14. 5 Examples of Connective Tissue 5. Blood • Blood cells in a fluid (non-living substance) • Transportation

  15. 3. Muscle Tissue • Function : CONTRACT, shortens to produce movement

  16. 3 Types of Muscle Tissue Classification 1.Skeletal: • Voluntary • long cells with stripes, • lots of nuclei (cells look like a slinky in the microscope) • Attached to bones

  17. 3 Types of Muscle Tissue Classification 2. Cardiac: • Involuntary cells (you don’t have to control them) • have stripes, look broken, • each cell has one nucleus

  18. 3 Types of Muscle Tissue Classification 3. Smooth: • Found in walls of hollow organs • Involuntary • Cells have NO stripes, • look like thread, one nucleus

  19. Silly Skeletal Muscle Tissue Slimy Smooth Muscle Tissue Crazy Cardiac Muscle Tissue

  20. 4. Nervous Tissue Functions • Irritability and Conductivity • Receive and send electrochemical impulses Tissue Classification • NEURONS • Found in brain, spinal Cord and nerves

More Related