Tissues Chapter 2 *You will need your notebook*. Tissues Groups of closely associated cells that are...

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