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