Biology Exam #3

Animal Form and Function

anatomy

the biological form of an organism

physiology

the biological functions an organism performs

Simple cell arrangement

tissue only has one layer

Stratified Cell arrangement

tissue has multiple cell layers

Psudostratified

cell arrangement where tissue appears to have multiple layers due to varying cell heights but actually has only one layer.

Epithelial Tissue function

covers body surfaces, lines cavities, and forms glands.

Squamous cell shape

flat- areas if abrasion or gas/nutrient exchange

cuboidal cell shape

dice shape - secretion

Columnar Cell Shape

brick shape- secretion and absorbing

Simple Squamous Epithelium

• Lines blood vessels and airsacks in lungs

• exchange materials vie diffusion

Simple Cuboidal Epithelium

• lines glands and kidney tubules and ovaries

• specialized for secretion and absorbtion

Simple columnar Epithelium

• lines digestive tract, uterus, reproductive organs

• provides protection, secretion, and absorbtion

Pseudostratified columnar epithelium

• lines passageway of resperatory tract

• secretes mucus

• beating cilia sweep and film mucaus along surface

stratified squamous epithelium

• out layer of skin, mouth

• provides protection

Exocrine

secrete products directly to target

Endocrine

secrete products to bloodstream