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Chapter 4 Coggle (4.7 Nervous Tissue ((((((regeneration-fibroblast produce…
Chapter 4 Coggle
4.7 Nervous Tissue
Primary cells=neurons which respond to changes in their surroundings(stimuli)
cell body;containing a large nucleus
dendrites: numerous branching projections
axon:tail
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locations: brain and spinal cord(CNS- Central Nervous System) Nerves(PNS- Peripheral Nervous System)
Function: 1. Coordination or integration of body parts( to transmit signals from body parts to brain and from brain back to body parts) No reproduction of neurons,only neuroglia can divide.
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Mast cells release histamine and heparin swelling warmth,redness,pain
4.6 Muscle tissue
Skeletal muscle tissue- structure: long thin cells(fibers) with many nuclei;alternating areas of light and dark(striations) location; attached to bones function:move bones of skeleton control:voluntary=conscious
Cardiac Muscle Tissue- Structure:network of cells with one centrally located nucleus; intercalated discs(where 2 cells meet); striations location: heart function: to pump blood from heart----lungs
to pump blood from heart-----body
control: involuntary=unconscious
Smooth Muscle Tissue- Structure: spindle-shaped cells with one centrally located nucleus; no striations
Location: walls of hollow visceral organs
walls of blood vessels
attached to hair follicles in the dermis
Function: movement of food through digestive tract; vasoconstriction
Control:involuntary=unconscious
CONNECTIVE TISSUE- are the most diverse tissues of the body.
Connective tissue proper- consits of many types of cells and fibers within a matrix containing a syrupy ground substance. Examples are the tissue that underlies the skin,fatty tissue, and tendons, and tendons, and ligaments.
Fluid connective tissues- have a distinctive population of cells suspended in a matrix of watery ground substance containing dissolved proteins. The two fluid connective tissues are blood and lymph.
Supporting connective tissues- have a less diverse cell population that connective tissue proper, and a matrix of dense ground substance and closely packed fibers. The body contains two supporting connective tissues: cartilage and bone. The fibrous matrix of bones is said to calcified because it contains mineral deposits(primarily calcium salts) that give the bone strength and rigidity.
Cells of connective tissue proper- fibroblasts,fibrocytes,macrophages,fat cells or adipocytes, and mast cells.
connective tissue fibers are- collagen,elastic,a reticular fibers.
Kahoot 4-4 Chapter Quiz
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types of connective tissue include bone,elastic connective, and blood
why does damaged cartilage heal slowly? cartilage is avascular,so nutrients and other molecules must diffuse ti the site of the injury.
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this type of tissue typically makes up the internal framework of organs such as the spleen. reticular
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