histology Flashcards
Tissue
A group of similar cells working together to perform common functions.
Nervous Tissue Characteristics
Cell body
Axon
Dendrites
Nervous Tissue Function
Sense stimuli
Send electrical impulses
Nervous Tissue Locations
Brain
Spinal cord
Nerves
Muscle Tissue
Skeletal, Cardiac, and Smooth
Skeletal Muscle Tissue Characteristics
Visible striations
Multiple nuclei
Skeletal Muscle Tissue Functions
Movement
Maintain Posture
Skeletal Muscle Tissue Locations
Attached to skeleton by tendons
Cardiac Muscle Tissue Characteristics
Large number of mitochondria
Visible striations
Intercalated discs
Cardiac Muscle Tissue Functions
Heart contractions
Cardiac Muscle Tissue Locations
Heart
Smooth Muscle Tissue Characteristics
Uninucleate
Smooth
Smooth Muscle Tissue Functions
Move substances around body
Smooth Muscle Tissue Locations
Digestive organs
Respiratory organs
Blood vessels
Bladder
Uterus
Epithelial Tissue
Classification based on cell shape and number of layers.
Simple Squamous Epithelium Characteristics
Single layer
Thin, flattened cells
Simple Squamous Epithelium Functions
Diffusion
Filtration
Simple Squamous Epithelium Locations
Air sacs of lungs
Blood and Lymph Vessels
Simple Columnar Epithelium Characteristics
Single layer
Longer than they are wide
Simple Columnar Epithelium Functions
Secretion
Absorption
Simple Columnar Epithelium Locations
Uterus
Digestive tract
Pseudostratified Columnar Epithelium (Ciliated) Characteristics
Single layer of irregularly shaped columnar cells
Pseudostratified Columnar Epithelium (Ciliated) Functions
Filtration
Pseudostratified Columnar Epithelium (Ciliated) Locations
Trachea
Stratified Squamous Epithelium Characteristics
Many cell layers
Stratified Squamous Epithelium Functions
Cover
Protection
Stratified Squamous Epithelium Locations
Outermost layer of skin
Oral cavity
Connective Tissue
Most abundant tissue in body.
Areolar Characteristics
Delicate, thin
Areolar Functions
Binds cells and fibers together
Allows for movement
Areolar Locations
Between skin and organs
Spaces between muscles
Adipose Characteristics
Contain fat droplets
Adipose Functions
Stores nutrients
Insulates and protects organs
Adipose Locations
Beneath skin
Around kidneys
Hyaline Cartilage Characteristics
Fine collagen fibers
Pliable
Hyaline Cartilage Functions
Support
Provide framework
Hyaline Cartilage Locations
Ends of bones/joints
Soft part of nose
Elastic Cartilage Characteristics
Flexible
Elastic Cartilage Functions
Support
Provide flexible framework
Elastic Cartilage Location
External ears
Voicebox
Fibrocartilage Characteristics
Tough
Many collagen fibers
Fibrocartilage Functions
Absorbs shock
Fibrocartilage Locations
Between bony parts of spinal column
Bone (Osseous) Characteristics
Hard tissue
Many collagen fibers
Bone (Osseous) Functions
Support
Protection
Bone (Osseous) Locations
Bone
Blood Characteristics
Formed elements (cells and platelets) suspended in plasma
Blood Functions
Transports substances
Blood Locations
Enclosed within blood vessels and heart