histology: study of tissues · when groups of cells work together for a common function. ......

Histology: Study of Tissues

When groups of cells work together for a common function

Histology

• Epithelial Tissue

• Connective Tissue

• Muscle Tissue

• Nervous Tissue

I. Epithelial Tissues

• Functions: protection, absorption, secretion, excretion

• Features: lack blood vessels, reproduce rapidly, tightly packed, free edge

Simple Squamous Epithelia

Simple Cuboidal Epithelia

Simple Columnar Epithelia

Pseudostratified Columnar Epithelia

Stratified Squamous Epithelia

Stratified Columnar Epithelium

Stratified Cuboidal Epithelium

Transitional Epithelium

Glandular Epithelium

• Classified based on:

• How secretions move through the body:

• Exocrine vs. Endocrine glands

• How secretions are released from the gland:

• Apocrine, Merocrine, Holocrine secretion

II. Connective Tissues

• Have large intercellular spaces that contain extracellular material (matrix)

Loose Fibrous Connective Tissue (Areolar)

Dense Fibrous Connective Tissue

Adipose Tissue

Cartilage

• Hyaline Cartilage

• Fibrocartilage

• Elastic cartilage

Bone (Osseous Tissue)

Blood

III. Muscle Tissue

• Muscle tissue is conductive

• Muscle tissue is contractile

• Three types:

• Skeletal

• Cardiac

• Smooth

IV. Nervous tissue

• Nervous tissue is conductive

• Composed of:

• 1. neurons which generate and conduct impulses

• 2. neuroglial cells provide anatomical and functional support to the neurons