tissues chapter 2 *you will need your notebook*. tissues groups of closely associated cells that are...
TRANSCRIPT
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TissuesChapter 2
*You will need your notebook*
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Tissues• Groups of closely associated cells that are
similar in structure and perform a common function
• Chapter 2: Cells and Tissues
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• Histology = study of tissue
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1. epithelial tissue–protection
2. connective tissue–supports
3. muscle tissue–movement
4. nervous tissue–control
Types of Tissues
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• squamous– flat
• cuboidal– square
• columnar– tall
Epithelial Cell Shapes
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• simple– one layer
• stratified – more than one layer
• other– transitional• stretchable
Epithelial Cell Arrangement
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Epithelial Glands = secrete substances
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True or False?1. Connective tissue provides support.2. Transitional epithelial stretches.3. Cuboidal cells are flat.4. Stratified means more than one layer. 5. Epithelial glands secrete substances.
Review
TrueTrue
FalseTrue
True
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• functions– strengthens the body and organs– protects internal organs– maintains the shape of organs– provides rigid framework for muscles to pull
• fibers– collagen– reticular– elastic
Connective Tissue
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• connective tissue proper– wide variety of locations and functions– plays a role in immune defenses
• cartilage– provides support and flexibility– minimizes friction
• bone tissue (osseous tissue)– provides framework, protects organs, supports body
• blood– provides transportation, regulation, and protection– carries oxygen and nutrients, and carbon dioxide
Classes of Connective Tissue
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• connective tissue proper– loose– dense
• cartilage• bone • blood
Types of Connective Tissue
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• loose connective tissue– areolar–under epithelium – reticular–spleen– adipose–fat
Loose Connective Tissue
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• dense connective tissue– regular dense–
tendons – irregular dense–
dermis– dense elastic–large
artery walls
Dense Connective Tissue
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• chondroblasts• hyaline– ends of long bones
• elastic – external ear
• fibrocartilage – intervertebral discs
Cartilage
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• osseous tissue– protects organs– supports the body
Bone
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• Skeletal– Attached to bones
• Cardiac– Found in heart
• smooth – Walls of hollow
organs
Types of Muscle Tissue
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• Glial cells (neuroglial) – nonconducting cells that support, insulate, and protect neurons.
• Neurons- generate and conduct nerve impulses.
Nerve Tissue
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Match the following with 1–4 below: skeletal, cartilage, nervous tissue, elastic cartilage.1. muscle tissue type2. external ear 3. fiber4. glial cells
Review and Assessment
Skeletal Elastic cartilage
CartilageNervous tissue
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Assignment
• Complete Tissue Review and turn in for grade