1 / 40

Chapter 5: Tissue

Chapter 5: Tissue. Types of Tissues. A tissue is composed of specialized cells that perform a function in the body. The human body has four major types of tissues:. The 4 types are: Epithelial Connective Muscle Nervous. Some Cancers that occur in tissue are:.

jabigail
Download Presentation

Chapter 5: Tissue

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. Chapter 5: Tissue

  2. Types of Tissues • A tissue is composed of specialized cells that perform a function in the body. • The human body has four major types of tissues:

  3. The 4 types are: • Epithelial • Connective • Muscle • Nervous

  4. Some Cancers that occur in tissue are: • Carcinomas – cancers of epithelial tissue • Sarcomas – cancers of connective tissue • Leukemia – cancer of blood • Lymphomas – cancers of lymphatic tissue

  5. 1. Epithelial Tissue Characteristics of epithelial tissue: • Epithelial tissue is made of highly packed cells that line the body surface and inner body cavities. • Epithelial tissue functions in protection, secretion, absorption, excretion, and filtration.

  6. Obj. #1: Describe the types of Epithelial Tissue • Simple Squamousepithelium • a single layer of of flattened cells • is found lining the lungs and blood vessels. • Allows substances to pass into and out of tissue…when oxygen enters blood stream

  7. Simple squamous epithelium These flatten cells allow diffusion into and out of the cell.

  8. 2. Cuboidalepithelium • contains cube-shaped cells • is found lining the kidney tubules and glands • functions to store secretions

  9. Simple Cuboidal Ttissue

  10. 3. Simple Columnar epithelium • has elongated cells with nuclei at the bottom of cells • is found in the digestive tract. • secretes digestive fluid • absorbs nutrients • cells have microvilli on ends to increase absoption • has goblet cells that make mucus

  11. Simple Columnar Epithelial

  12. Pseudostratified Columnar epithelial- • Long cells with cilia on end • Lines respiratory tract and reproductive tract • Promotes movement of mucus in repiratory tract • Promotes movement of egg in oviducts

  13. Pseudostratified ciliated columnar epithelium

  14. Stratified Squamous • Found in outer skin and lines the mouth • Occurs in layers- stacks of flatten cells • Oldest layer is on top…youngest on bottom • Protects body from invasion • Outer layer sloughs off as cells die

  15. Stratified Squamous Epithelium • Topmost layer is dead cells • They flatten out and form a protective layer • Skin

  16. Transitional epithelial tissue • Stretches • Found in bladder

  17. Transitional Epithelial

  18. Obj. #2 Describe Connective Tissue Characteristics: • binds organs together, provides support and protection, fills spaces, produces blood cells, and stores fat. • matrix material is the material that fills the cell. It is a semifluid or solid. • Different types of fibers float in matrix

  19. Types of Connective Tissue . 1. Loosefibrous-supports epithelium and many internal organs. • Wrinkles form when loose fibrous tissue ages. • Sun exposure cause fibers in loose to break much like a rubber band breaks.. this leads to wrinkles forming

  20. Loose fibrous connective tissue

  21. 2. Dense fibrous-is found in tendons and ligaments. • Very tightly packed cells • Has very little blood supply..so when a person injures a ligament or tendon…it will take a long time to heal

  22. Dense Connective Tissue

  23. 3.Adipose tissue is found beneath the skin and around certain internal organs. Functions: • Cushions • Insulates • Stores energy-cells look empty…but contain fat droplets

  24. Adipose (fat) Connective Tissue • Lipid (fat) droplet • nucleus • collagen fibers

  25. 4. Cartilage Cartilage found in outer ear, nose, and between bones. Function: Flexible Protects

  26. Cartilage

  27. 5. Bone • Bone is the most rigid connective tissue with its matrix of calcium and other inorganic salts and protein fibers. • Compact bone makes up the shafts of long bones and consists of ring-linke circels called osteons which contain blood vessels and nerves.

  28. Compact bone

  29. 6. Blood • Blood is a fluid connective tissue containing blood cells in liquid plasma. • Blood has many functions: • Keeps body chemistry within limits • Transports nutrients and wastes to cells • Distributes heat

  30. Blood, a fluid tissue

  31. Formed elements of blood

  32. There are 3 types 1. Skeletal muscle, under voluntary control, is attached by tendons to bones and allows for movement. - have striations which are bands of fibers Obj. #3 Describe Muscle Tissue

  33. Skeletal muscle

  34. 2. Smooth (visceral) muscle is involuntary and nonstriated. Long, tapered cells, Smooth muscle is found in walls of organs. Smooth muscle contracts more slowly than skeletal muscle but can remained contracted for a longer period.

  35. Smooth muscle

  36. 3. Cardiac muscle is found only in the walls of the heart and functions to pump blood. Cardiac muscle has striations but is involuntary. Cardiac muscle fibers are branched and have a single nucleus.

  37. Cardiac muscle

  38. 4. Nervous Tissue • Nervous tissue found in the brain and spinal cord is made up of cells called neurons. • Neurons have three parts: • Dendrites – carry impulses to the neuron • Cell body – houses nucleus • Axon – carries impulse away from cell

  39. Nerve Tissue • Neuron • process • nucleus • nucleolus • Neuroglia

  40. A neuron and some types of neuroglia

More Related