A&P 1 Lab #3 Flashcards
Simple epithelia
A single cell layer
typically found where absorption, secretion, and filtration occur
Four categories of tissues and their functions
Nervous tissue
Muscle tissue
epithelial tissue
connective tissue
Stratified epithelia
Two or more layers of cells stacked on top of each other
common in high abrasion areas ex: skin, lining of mouth
squamous epithelium
Cells that are flattened and scalelike
cuboidal epithelium
Cells that are boxlike or cubelike
columnar epithelial
Cells that are tall and column-like
Simple squamous epithelium
Lung
Function: allows materials to pass by diffusion and filtration in sites where protection is not important; secretes lubricating substances in serosea
Simple cuboidal epithelium
Thyroid, kidney tubules
Function: secretion and absorption
Simple columnar epithelium
Stomach, rectum, uterus, small bronchi
Function: absorption; secretion of mucus, enzymes. Ciliated type propels mucus
Stratified squamous epithelium
Skin, mouth, esophagus
Function: protects underlying tissue in areas subjected to abrasion
Transitional epithelium
Urinary bladder
Function: stretches readily, permits stored urine to descend urinary organ
Pseudostratified ciliated columnar epithelium
Trachea
Function: secrete substances, particularly mucus; propulsion of mucus by ciliary action
Areolar connective tissue
Various locations
Has no obvious structure like layers or rows
Substances outside of cell are unarranged fibers (extracellular matrix)
Adipose tissue
Hypodermal layer of skin
Fat
Reticular connective tissue
Spleen/liver
Dense regular connective tissue
Tendon
Dense irregular connective tissue
Dermal layer if skin
Hyaline cartilage
Tracheal cartilage
Osseous tissue
Compact bone
Nervous tissue
Internal communication:
- brain
- spinal cord
- nerves
Muscle tissue
Contracts to cause movement:
muscles are attached to bones (skeletal)
muscles of heart (cardiac)
muscles of walls of hollow organs (smooth)
Epithelial tissue
Forms boundaries between different environments; protects, secretes, absorbs,filters lining of digestive track organs and other hollow organs
Connective tissue
Supports, protects, binds other tissues together:
Bones
Tendons
Fat and other soft padding tissue
