Lecture Outlines Chapter 4 Tissues

Objectives:

·        Define histology

·        Identify the shape, function and location of the four main groups of tissue and their subclasses.

·        Explain tissue trauma, repair and regenerative capacity

·        Describe the developmental aspects of the four main groups of tissue

 

Definition of Histology-  pg 118

Tissues

1.  Groups of cells with similar form and function

 

            2.  Groups of Tissues

                        Epithelial-

                       

 

Connective-

                       

Muscle-

                       

Nervous-

 

I.  Epithelial Tissue  pg 118-120

Cellularity-

 

            Polarity- apical surfaced

 

                           basal surface

 

            Supported by connective tissue-  Reticular lamina

 

                        Combination of basal lamina and reticular lamina-basement membrane

            Avascular but innervated-

 

            Regenerative-

 

 Classification of Epithelial by the number of layers

Simple-

 

            Stratified-

 

Classification of Epithelial by the shape of the cells

Squamous-

 

            Cuboidal-

            Columnar-

 

V.  Classification-pg 120-124	Shape	Function	Location
Simple Squamous
Simple Cuboidal
Simple Columnar
Pseudostratified Columnar
Stratified Squamous
Stratified Cuboidal
Stratified  Columnar
Transitional

 

 Gladular Epithelia – pg 124-127

 

            1.  Definition of gland-

 

            2.  Types of classifications of glandular epithelia

 

                        Site of production-

 

                        # of cells forming the gland-

 

Endocrine Glands

 

            1.

 

 

            2.

 

           Exocrine Glands

 

            1.

 

            2.

 

            3.

 

            4.

 

            5.

 

            Multicellular Exocrine Glands

 

                        Classified by-

 

                                    1.

 

 

                                    2.

 

 

           

 

 

 

 

 

 

           

Classification of Multicellular Exocrine Glands		Examples:
Tubular (tube –like) Secretory Structure	Simple tubular
	Simple branched tubular
	Compound tubular
Aveolar (Flask-like) Secretory Structure	Simple Aveolar
	Simple branched Aveolar
	Compound Alveolar
	Compound Tubuloaveolar

 

 

 

Modes of Secretions by Glands

 

            Merocrine

 

            Halocrine

 

 

II.  Connective Tissue  pg 126

 

            1.

 

 

            2.  Types of connective Tissue

 

                        Connective tissue proper

 

                        Cartilage

 

                        Bone

 

                        Blood

 

 

Overview of Connective Tissue  pg 128; 127-139

Common embry-onic origin
Cellular Descen- dents
Connec- tive Tissue
Sub- classes	Loose- 1. Areolar             2. Adipose               3. Reticular	Hyaline	Bone	Blood-Red blood cells and white blood cells in plasma
		Fibrocartilage
	Dense- 1.  Regular         2.  Irregular	Elastic

 

 

 

Functions of Connective Tissues pg 127

 

            1.

 

            2.

 

            3.

 

            4.

 

 

Characteristics of Connective Tissue pg 127

 

            Connective Tissue has:

 

            1.

 

            2.

 

            3.        

 

Structural Elements of Connective Tissue pg 127- 130

 

 

            1.

 

 

            2.

 

 

            3.

 

 

Ground Substance-

 

 

 

Fibers

 

 

            1.  Collagen

 

 

            2.  Elastic

 

 

            3.  Reticular

 

Cells

 

            1.  Fibroblasts

            2.  Chondroblasts

            3.  Osteoblasts

            4.  Hemopoietic Cells

 

 

III.  Nervous Tissue    pg 139

           

1.

 

            2.

 

            3.

 

 

IV.  Muscle Tissue  pg 139- 141

Type of Muscle Tissue	Skeletal	Cardiac	Smooth
Description
Function
Location

V.  Tissue Trauma  pg 144

 

           

 

 

 

 

 

VI.  Tissue Repair  pg 143

 

            1.

 

 

            2.

 

           

            3.

 

 

            4.

 

 

 

 

 

 

 

VII.  Regenerative Capacity  pg 143-144

Very Good Regenerative Capacity	Moderate Regenerative Capacity	Weak Regenerative Capacity	No Regenerative Capacity

 

 

 

Nonregenerative tissue-

 

            Serious wounds are replaced by fibrous scar tissue

 

 

 

 

VIII.  Developmental Aspects  pg 145

 

            1.  Primary Germ Layers:

 

 

                        a.

 

 

                        b.

 

 

            2.  Epithelial Tissues

 

 

            3.  Nerve Tissue

 

 

            4.  Muscle, Connective Tissue

 

 

 

Old Age- less collagen, epithelial thins, tissue repair is difficult