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Tissue Classification
Topic: Types of tissue, function and structure
Objective: Identify different types of tissues and their functions within the human body from pictures.
Tissue Flashcards
Tissues are groups of cells that work together to perform specialized function
Four major types
Epithelial
Connective
Muscle
Nervous
Tissues in order of most to least diverse
Connective = Most diverse
Epithelial
Muscle
Nervous = Least diverse
Classifying Epithelial Tissues
Shape
Squamous = Flat
Cubodial = Cube-Shaped
Columnar = Elongated cells
Layers
Simple = One layer
Stratified = More than one layer
Transitional = Mixture of layers between parts
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Epithelial Tissues
Cells fit closely together and often form sheets
Avascular (meaning they have no blood supply)
Regenerate easily
Function
diffusion, filtration ,or secretion
Location
inside organs, membranes, and fluids that protect and support body tissues.
transitional layers are good for areas like bladder because they allow for flexibility and absorb shock while maintaining structural integrity.
Connective tissue
Most abundant and widely distributed tissue
Some have blood supply, some do not
Most diverse group of tissues in the human body.
Function
Binds tissue together
Supports the body
Provides protection
Location
Found everywhere in the body
Bone (osseous), Blood, Hyaline cartilage(Ribs), Elastic cartilage, Fibrocartilage (Spine), Tendons, Bottom layer of skin, Fat cells
fat cells are mostly water (vacuole) and nuclei, which is why its squishy and bouncy
white blood cell = neutrophil
monocyte = white blood cell
white blood cells play a crucial role in the immune response by identifying and destroying pathogens.
Muscle Tissues
3 types
Smooth
Cardiac
Skeletal
Function
movement, posture, and heat
Location
Smooth: inside the lining of organs
Cardiac: heart, skeletal
Skeletal: on skeletal system
more stripes on muscle = more movement (because they can expand and contract)
Nervous Tissue
Cells are called Nerves, Neurons, Neuroglia
Function
send impulses to other areas of the body
Location
Brain, Spinal cord, nerves