Animal Tissues

May 10, 2018 | Author: Anonymous | Category: Каталог , Презентации
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Categories of Tissues

Animal Tissues

Jenna Hellack Jan 2001

Categories of Tissues

Categories of Tissues Epithelium Connective Muscle Nervous Jenna Hellack Jan 2001

Categories of Tissues

Epithelium Lines, covers, and protects other tissues and organs. Characterized by: Cells tightly junked together The presence of a cell secretion called the basement membrane.

Named by: Cell shape Other characteristics of the cells.

Squamous, Cuboidal, and Columnar Jenna Hellack Jan 2001

Categories of Tissues

Squamous Epithelium Cells very thin, much wider than they are thick. Simple Squamous Epithelium  Air sacs of respiratory  Lining of blood vessels, heart and lymphatic tubes

Stratified Squamous Epithelium  Skin  Vagina  Esophagus  Mouth Jenna Hellack Jan 2001

Categories of Tissues

Examples of Simple Squamous Epithelium

Jenna Hellack Jan 2001

Categories of Tissues

Stratified Squamous Epithelium

Jenna Hellack Jan 2001

Categories of Tissues

Cuboidal Epithelium  Cells cube shaped- secretion and absorption. Kidney tubules Duct and small glands Surface of ovary

Jenna Hellack Jan 2001

Categories of Tissues

Columnar Epithelium Elongated cells, much longer than they are wide. Simple Columnar Epithelium  A single layer of cells that line the digestive tract, gallbladder and excretory ducts of some glands. Has microvilli at surface for absorption.

Pseudostratified ciliated columnar epithelium  Lines the bronchi, trachea, uterine tubes and some of the uterus. Propels mucus or reproductive cells by ciliary action. Jenna Hellack Jan 2001

Categories of Tissues

Simple Columnar epithelium

Jenna Hellack Jan 2001

Categories of Tissues

Pseudostratified Ciliated Columnar Epithelium

Jenna Hellack Jan 2001

Categories of Tissues

Connective Tissue  Characterized by the cells widely separated from each other in a matrix that is produced by the cells.  Tissue protects and supports.  Cell Matrix composed of two regions Ground  Liquid (sol), Gel, Gum or solid

Fibers  Non-elastic (= white or Collagen)  Elastic (= yellow fibers)

 Types of Connective tissue Jenna Hellack Jan 2001

Categories of Tissues

Types of Connective Tissue Loose (Areolar) Connective Tissue Dense Connective Tissue Adipose Cartilage Bone Blood

Jenna Hellack Jan 2001

Categories of Tissues

Loose Connective Tissue (Areolar)  Gel like ground with both elastic and non-elastic fibers running though the ground in many directions. Wraps and cushions organs Under the skin

Jenna Hellack Jan 2001

Categories of Tissues

Dense Regular Connective Tissue  Nuclei and fibers arranged in parallel rows. Tendons and ligaments Fibers mostly non-elastic

Jenna Hellack Jan 2001

Categories of Tissues

Adipose (Fat)  Function as storage cells for adipose (lipids)  Adipose cells contain a large vacuole which in the live cell contains lipids.  Cell nucleus and cytoplasm are pushed out to edge of cell membrane.

Jenna Hellack Jan 2001

Categories of Tissues

Cartilage  Ground of matrix is gum like.  Cells are found in Lacunae within the matrix.  Fibers may be elastic or non-elastic, or a form of non-elastic called reticular(where the non-elastic fibers of very thin) Hyaline Cartilage-example on the ends of bones Elastic Cartilage- example ear cartilage Non-elastic Cartilage- example nose cartilage.

Jenna Hellack Jan 2001

Categories of Tissues

Hyaline cartilage

Jenna Hellack Jan 2001

Categories of Tissues

Elastic Cartilage

Jenna Hellack Jan 2001

Bone

Categories of Tissues

Ground of matrix is Solid (Calcium carbonate). Has blood supply and nerves running through the Haversian canal systems.

Jenna Hellack Jan 2001

Categories of Tissues

Vascular Tissue (Blood)  Liquid matrix = plasma 90% water 10%Plasma proteins, electrolytes, hormones, oxygen, glucose etc.

 Formed elements Erythrocytes -48billion(female) to 54 billion (male) cell / ml of blood in humans. Mammals are enucleated while rest of the vertebrates they have nuclei Leukocytes -about 7.5 million / ml of blood Platelets -blood clotting Jenna Hellack Jan 2001

Blood

Jenna Hellack Jan 2001

Categories of Tissues

Categories of Tissues

Muscle Tissue  Tissue with cells having fibers specialized for contraction. Skeletal Muscle (Striated, voluntary)  Parallel elongated cells (fibers)  multinucleated and each cell is the length of the muscle.  Light meat, Dark meat—Slow twitch, fast twitch muscle

Smooth Muscle (Visceral, involuntary)  Cells are long and tapered.  Organized into sheets of muscle.

Cardiac Muscle  Intercalated disc  Myogenic  branched Jenna Hellack Jan 2001

Categories of Tissues

Skeletal Muscle

Jenna Hellack Jan 2001

Categories of Tissues

Smooth Muscle

Jenna Hellack Jan 2001

Cardiac Muscle

Jenna Hellack Jan 2001

Categories of Tissues

Categories of Tissues

Nervous Tissue Cells specialized to polarize and depolarize. Cell is a neuron

Jenna Hellack Jan 2001

Categories of Tissues

End of Tissue presentation

Jenna Hellack Jan 2001

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