Anatomy and Physiology The Microscope and Tissues Calculation

Anatomy and Physiology: The Microscope and Tissues

Calculation of Total Magnification • Multiply the magnification of the ocular lens with the magnification of the objective lens ? 10 X

Calculation of Total Magnification • Multiply the magnification of the ocular lens with the magnification of the objective lens ? 10 X 40 X

Calculation of Total Magnification • Multiply the magnification of the ocular lens with the magnification of the objective lens ? 10 X 100 X

Field of View 1 X

Field of View 10 x

Field of View 50 x

The Classification of Tissues • What is a tissue? – A group of cells working together – 4 types of tissues: • Epithelial Tissue • Muscle Tissue • Connective Tissue • Nervous Tissue

Epithelial Tissue • Covers surfaces of the body – Functions: • Protection • Absorption • Filtration • Excretion • Sensory reception • 3 types: – Squamous – Cuboidal – Columnar * Can be Simple or Stratified

Simple Squamous

Stratified Squamous

Simple Cuboidal

Stratified Cuboidal

Simple Columnar

Muscle Tissue • 3 types: –Smooth –Skeletal –Cardiac

Smooth Muscle: • Found in the walls of hollow organs: – Digestive tract • No striations are visible • Uninucleate

Skeletal Muscle • Attaches to skeleton • Under voluntary control • Moves the limbs and other external body parts • Multinucleate • Obvious striations • Nuclei lie on the periphery of the cells

Cardiac Muscle • Found only in the heart • Striations • Branching and uninucleate • Intercalated discs

Connective Tissue • Numerous kinds of connective tissues: • Cells spaced out in a non-living matrix

Connective Tissue • Numerous kinds of connective tissues: • Areolar • Cartilage • Bone • Blood

Nervous Tissue

• Neurons –Axon –Dendrite –Cell Body