Tissues Chapter 2 *You will need your notebook*
Dec 23, 2015
TissuesChapter 2
*You will need your notebook*
Tissues• Groups of closely associated cells that are
similar in structure and perform a common function
• Chapter 2: Cells and Tissues
• Histology = study of tissue
1. epithelial tissue–protection
2. connective tissue–supports
3. muscle tissue–movement
4. nervous tissue–control
Types of Tissues
• squamous– flat
• cuboidal– square
• columnar– tall
Epithelial Cell Shapes
• simple– one layer
• stratified – more than one layer
• other– transitional• stretchable
Epithelial Cell Arrangement
Epithelial Glands = secrete substances
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
• 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
• 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
• connective tissue proper– loose– dense
• cartilage• bone • blood
Types of Connective Tissue
• loose connective tissue– areolar–under epithelium – reticular–spleen– adipose–fat
Loose Connective Tissue
• dense connective tissue– regular dense–
tendons – irregular dense–
dermis– dense elastic–large
artery walls
Dense Connective Tissue
• chondroblasts• hyaline– ends of long bones
• elastic – external ear
• fibrocartilage – intervertebral discs
Cartilage
• osseous tissue– protects organs– supports the body
Bone
• Skeletal– Attached to bones
• Cardiac– Found in heart
• smooth – Walls of hollow
organs
Types of Muscle Tissue
• Glial cells (neuroglial) – nonconducting cells that support, insulate, and protect neurons.
• Neurons- generate and conduct nerve impulses.
Nerve Tissue
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
Assignment
• Complete Tissue Review and turn in for grade