Histology
Groups of closely related associated cells that are similar in structure and perform a common function are tissue. Cytology – the study of cells Histology – the study of tissue
Components of Tissues Cells Extracellular matrix may be fluid or protein fibers Matrix Cell
4 Basic Types of Tissue in Humans Epithelial tissue Connective tissue 3. Muscle tissue 4. Nervous tissue
Muscle Tissue
Characteristics highly cellular vascular contractibility
3 Types of Muscle Tissue: 3. Smooth 2. Cardiac 1. Skeletal
1. Skeletal Muscle Tissue Movement Voluntary Multinucleated Striated – banded
2. Cardiac Muscle Tissue Heart only Pumps Involuntary
2. Cardiac Muscle Tissue Striated Intercalated disks – connects cell to cell
3. Smooth Muscle Tissue lacks striations involuntary
3. Smooth Muscle Tissue walls of hollow organs ex: - GI tract - urinary tracts - uterus - arteries