Lab 3: Microscopy and Histology

Micro-

small

Scop/e

view/observe

hist/o

tissue

-ology

study of

a-

without

chondr/o

cartilage

oste/o

bone

Microscope parts

• stage

• light source

• light diaphragm

• objective lens

• focus knobs (course/fine)

• field of view

• oil immersion

• Monocular vs. binocular

Epithelial Tissue

• cellular

• no extracellular components

• exposed to external environment/in glands

• Squamous, cuboidal, columnar

Connective tissue

• acellular

• have more extracellular components

• found between other tissue layers

• fluid, fibrous, supportive

Muscle Tissue

• cellular

• extensive cytoskeleton

• contractile tissue influenced by electrical signals

• Skeletal, smooth, cardiac

Nervous Tissue

• equal cellular/extracellular components

• ability to create and conduct electrical signals

Common protein fibers

• collagen

• elastic

• reticular

Skeletal Muscle Tissue

• striated

• “fiberous” cell

• looks like drinking straw

Smooth muscle tissue

• non-striated

Cardiac muscle tissue

• striated

• branched

• intercalated discs

Cartilage/Caondrycytes

• hyoline cartilage

• elastic cartilage

• fibrocartilage

Osseous tissue/osteocytes

• compact bone

• spongy bone