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6180490
Tissues
Descrição
Unit 2 Tissues note
Sem etiquetas
anatomy
science
notes
12th grade
Mapa Mental por
Andrew Newberry
, atualizado more than 1 year ago
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Criado por
Andrew Newberry
aproximadamente 8 anos atrás
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Resumo de Recurso
Tissues
Intercellular Junction connect cells
Tight Junction closes space between cells by fusing cell membranes
Cells line the small intestine
Desmosomes bind cells by forming "Spot Welds" between cell membranes
Cells of the outer skin layer
Gap Junctions form tubular channels between cells that allow the exchange of substances
Muscle cells of the heart and digestive system
4 Major Types of Human Tissue
Epithelial
Function
protection, secretion, absorption and excretion
Location
covers body surface, covers and lines internal organs, compose glands
Charecteristics
lack blood vessels, cells readily divide, cells are tightly packed together.
Connective
Function
bind, support, protect, fill spaces, store fat, produce blood cells
Location
widely distributed throughout the body
Charecteristics
Mostly have a good blood supply, cells are farther apart than epithelial cells, extracellular matrix in between
Muscle
Function
Movement
Location
attached to bones, in the walls of hollow internal organs, heart
Charecteristics
Able to contract in response to specific stimuli
Nervous
Function
conduct impulses for coordination, regulation, intergration and sensory reception
Location
brain, spinal cord, nerves
Charecteristics
cells communicate with each other and other body parts
Connective
Connective tissue connect, supports, protects, provides frameworks, fills spaces, stores fat, produces blood cells, protects against infection, and helps repair damaged tissues.
Connective tissue cells usually have considerable extracellular matrix between them.
This extracellular matrix consists of fibers and a ground substance (gel-like material).
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