Organisms, Muscles & Tissues Flashcards
Hierarchy of Structure
Atom
Molecule
Cell
Tissue
Organ
Organ System
Organism
4 Types of Tissue
Epithelial
Connective
Muscular
Nervous
2 Functions of Epithelial Tissue
Provide covering (skin)
Produce secretions (glands)
Characterisitics of Epithelial Tissue
- no blood supply
- usually occurs in sheets
- dependent on duffusion from capillaries for food/oxygen
- easy regneration (if well nourished)
- classified by # cell layers & shape
3 Shapes of Epithelial Tissue
squamous
cuboidal
columnar
Epithelial Cell Layer Names
Simple (one layer)
Stratified
Simple Epithelium Function
Structures with: Absorption
Secretion
Filtration
Stratified Epithelium Function
Protection
Function of Connective Tissue
Serves to connect different structures of the body
Features of Connective Tissue
Usually has own blood supply (ligaments are exception)
Bone
Cartilage
Adipose
Blood Vessel
Function of Muscle Tissue
Provide Movement
Supports voluntary movement since connected to bones
3 Types of Muscle Tissue
Skeletal
Cardiac
Smooth
Characteristics/Location of Smooth Muscle
Under involuntary control
Found in walls of hollow organs like intestines, blood vessels, bladder, & uterus
Characteristics/Location of Cardiac Muscle
Involuntary
Found only in the heart
Nervous Tissue Function
Provides structure for the brain, spinal cord & nerves