chapter 6:
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Chapter 6:. Tissues and Membranes. A. 4 types of tissues. Epithelial tissue Connective tissue Nervous tissue Muscular tissue. I. Epithelial Tissue (p. 33). Covers the body - “sheets” (except for glands) Lines organs and body cavities No blood supply Apical Surface – free surface - PowerPoint PPT PresentationTRANSCRIPT
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Chapter 6:
Tissues and Membranes
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A. 4 types of tissues Epithelial tissue Connective tissue Nervous tissue Muscular tissue
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I. Epithelial Tissue (p. 33) Covers the body - “sheets” (except for glands) Lines organs and body cavities No blood supply Apical Surface – free surface Basement Membrane – acts as a anchor to
cells Function: protects, absorbs, secretes, filters Examples: skin, glands, lining of the digestive
and respiratory tracts
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Types of Epithelial Tissue Classified
according to shape
1. Squamous – thin and flat cells
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Cuboidal Epithelium Cells are cube-like
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3. Columnar Epithelium Cells are tall and
narrow (kidney)
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Classified also by layersSimple – one layer
Stratified – multi layered
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Ciliated Pseudostratified columnar
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Epithelial Tissue Practice
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II. Connective Tissue (p. 34) Most abundant Supports and joins various part of
the body Good blood supply except tendons
and ligaments Examples: cartilage, bone, blood,
ligaments, tendons
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Connective Tissue Intercellular matrix – fills area
between cells (non-living) able to bear weight
may be liquid, semi-solid, gel, hard able to bear weight, stretch,
withstand abuse
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Connective Tissue B. Classification of Connective
Tissue 1. Bone (Osseous tissue) a. Bone cells are in tiny
cavities called lacunae surrounded by layers of calcified matrix
b. Protect and Support
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Connective Tissue - Cartilage
1. Hyaline Cartilage: rubbery & smooth; somewhat hard
found in larynx, attaches ribs to sternum, covers ends of bone
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2. Fibrocartilage Discs in the spinal
column
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3. Elastic Cartilagea. found in external
ear and nose
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Dense Fibrous Tissue Makes up tendons
and ligaments
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Loose Connective Tissue Areoler tissue
Anchors body parts
Surround organs
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Connective – Adipose Tissue
Stores Fat Protection from
extreme temperatures
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III. Nervous Tissue Carry an impulse Two types of cells:
Neurons: Neuroglia: support the neurons
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Nervous Tissue Receive and
conduct impulses Neuron – nerve
cells
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IV. Muscle Tissue (p. 33) Made of specialized cells that can
contract. 3 types of :
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a. Skeletal Muscle Voluntary Striated Movement Multi-nucleated
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2. Smooth muscle Not voluntary Found in various
organs Non- striated
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3. Cardiac muscle Heart Striated Involuntary One nuclei per
cell Intercalated discs
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Membranes: 3 Types: (p. 38) 1. Cutaneous
Membranes Skin Epidermis:
Stratified epithelium tissue
Dermis: connective tissue
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2. Mucous Membrane (muscosa) - Simple epithelium
tissue Line cavities that are
open to the external environment
Many produce mucous Lining of mouth, digestive
tract, reproductive tract, urinary tract, respiratory tract
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3. Serous Membrane (Serosa) Named according to location Line cavities that are not open
to the external environment Visceral layer: the layer
against the internal organs (organs=viscera)
Parietal layer: the layer against the inside wall of the cavity
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