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Types of Tissues Highlight: Headings Vocabulary Important Information.

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Presentation on theme: "Types of Tissues Highlight: Headings Vocabulary Important Information."— Presentation transcript:

1 Types of Tissues Highlight: Headings Vocabulary Important Information

2 Terminology ● Tissues – group of cells that carry out specialized activities ● Histo = Tissue ● …ology = study of ● Pathologists – Study cells and tissue; diseased ● Patho = disease

3 Four Main Types ● Epithelial ● Body surfaces, hollow organs, glands ● Connective ● Binds organs together, energy reserves for fat ● Muscle ● Movement and force application ● Nervous ● Stimulates action potential to activate body functions

4 1. Epithelial Tissue 1.Covering and Lining 2.Glandular Epithelium Protection, Filtration, Secretion, Absorption, and Excretion Divisions: Functions:

5 Tissue Arrangements Layer Arrangement SimpleStratifiedPseudostratified Single LayerTwo or More layersOne layer of mixed cells Osmosis, Diffusion, Absorption, Secretion Protect underlying tissues In areas of wear and tear Mucus Secretion And Movement

6 Cell Shapes SquamousCuboidalColumnarTransitional FlatThick CubedTall, CylindricalVaries

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8 A. Simple Squamous ● Function: Filtration, diffusion, osmosis, and secretion in serous membranes ● Location: Kidneys Glomeruli (water, glucose, and wastes), Air Sac (Alveoli) of Lungs (Gas Exchange), Heart and Blood Vessels (Nutrients & Medicine)

9 B. Simple Cuboidal ● Function: Secretion and Absorption ● Location: Kidney Tubules (Wastes), Ovary Surface (Ova)

10 C1. Ciliated Simple Columnar ● Function: Moves fluids and particles along passageways ● Location: Found in respiratory tract (mucosal Movement), fallopian tubes (Ova movement), sinuses (Pathogen removal → Runny Nose) Cilia

11 C2. Non-Ciliated Columnar ● Function: Microvilli secretion and Absorption ● Location: GI tract lining (Absorption of nutrients and water) & Gallbladder (Secretion of Bile)

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14 A. Pseudostratified Columnar Epithelium ● Functions: Mucus movement by cilia action ● Location: Found in upper respiratory tract and urethra, and gonads of males (Sperm maturation)

15 B. Stratified Squamous ● Functions: Protection of superficial layers of skin; vagina, mouth, esophagus, tongue ● Location: ● Keratinized = Superficial Layers of Skin ● Non-Keratinized = Wet Surfaces (Mouth, Vagina, Tongue)

16 C. Stratified Cuboidal ● Functions: Protection and limited secretion of sweat glands ● Location: Sudoriferous Glands (SWEAT)

17 D. Transitional Epithelium ● Function: Accommodate Distension in the urinary tract and vaginal walls as fluid pressures vary. ● Stretched = Squamous ● Relaxed = Cuboidal ● Location: Lining of the ureters, urethra, and bladder

18 3. Connective Tissue Binds organs together, energy reserves for fat

19 Areolar Loose Con. Tissue Cardiac Muscle Hyaline Cartilage Skeletal Muscle Tissue Simple Cuboidal Epithelium Nervous Tissue Adipose Loose Con. Tissue Stratified Squamous Epithelium Smooth Muscle Tissue Bone Connective Tissue

20 Bone Tissue Compact vs. Spongy ● Provides for support, Movement, Marrow (blood-forming) Haversian Canal Calcium

21 Cartilage

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23 Hyaline Cartilage ● Extremely strong, but very flexible and elastic ● Smooth surface for reduction of friction ● Movement of Joints, Flexibility ● Support (Trachea), Ossification of bones Ground Substance Chondrocyte Lacuna

24 Fibrocartilage ● Extremely tough ● Acts as a shock absorber ● Ex: ball and socket joints, intervertebral disc, meniscus

25 Elastic Cartilage ● Abundance of elastin for stretching capability ● Nose, Ears, epiglottis, larynx

26 Dense Fibrous Connective Tissue

27 ● Dense, Closely packed collagen fibers that provide high tensile strength ● Strong attachment for Tendons (Muscle to Bone), Ligaments (Bone to Bone)

28 Loose Connective Tissue

29 Areolar Connective Tissue ● Provides strength, elasticity, and support to subcutaneous layer and papilary regions of skin ● Consists of Collagen, Elastic, Reticular fibers Fibroblasts Elastin Collagen

30 Adipose Insulation Energy Reserves Fat Storage Blood Vessel Nucleus

31 Adipose Fat (White): ● Used for insulation, energy reserve, fat storage

32 Adipose Fat (Brown): ● Generates body heat in newborns that do not shiver ● After infants grow up, most of the mitochondria (gives the brown color) disappears, becomes similar to white fat. ● Recent Research=brown fat is related not to white fat, but to skeletal muscle

33 Loose Conn. Tissue Reticular Cartilage ● Reticular – Form covering of many internal organs (Stroma)

34 Blood ● Oxygen Transport ● Clotting (platelets) ● Immunity (WBC’s) ● Nutrient delivery

35 3. Muscle Tissue Movement and force application

36 ● Composes the heart wall ● Functions in pumping blood to all parts of the body ● Intercalated discs contain Gap Junctions (Communication) & Desmosomes (Anchor)

37 Skeletal Muscle Tissue ● Attached to bones by tendons ● Functions in body movements, posture, thermogenesis ● Only Muscle tissue controlled voluntarily

38 Smooth Muscle Tissue ● Forms walls of many internal organs ie: Stomach, GI tract, Uterus, Anus ● Functions in motion of internal organs

39 4. Nervous Tissue

40 Nucleus AxonDendrite ● Consists of Neuron and Neuroglia ● Neuron – Processes and transmits information through electrical and chemical signals (Sensory, Motor, Interneuron) ● Dendrites – Reacts to stimuli ● Axons – Conductor of impulse

41 Sad? Need a Tissue?

42 Areolar Loose Con. Tissue Cardiac Muscle Hyaline Cartilage Skeletal Muscle Tissue Simple Cuboidal Epithelium Nervous Tissue Adipose Loose Con. Tissue Stratified Squamous Epithelium Smooth Muscle Tissue Bone Connective Tissue

43 SIMPLE SQUAMOUS SIMPLE COLUMNAR EPITHELIUM TRANSITIONAL EPITHELIUM PSEUDO- STRATIFIED CILIATED COLUMNAR EPITHELIUM DENSE REGULAR FIBROUS TISSUE (TENDON)


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