Health

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  • Created by: sree2002
  • Created on: 29-02-16 15:05
what is health?
state of complete mental, physical and social well-being + absence of sickness
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what are the four factor of fitness? (The 4 s)
speed, stamina, strength and suppleness (flexibility)
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what does the respiratory system consist of?(7)
trachea, lungs, alveoli, bronchi, bronchioles, diaphragm and ribs
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respiration word equation?
oxygen+glucose---> carbon dioxide+water+energy
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what happens when you inhale?
rib muscles contract (up+out), diaphragm contracts (flat), volume of thorax (chest), pressure in lungs decreases.
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what happens when you exhale?
ribcage relaxes (down+in), diaphragm relaxes (dome shape upwards), thorax volume decreases, pressure in lungs increses.
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Where does gaseous exchange take place?
alveoli
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adaptations of alveoli?
Thin walls for gas to pass through, large surface area, good/easy blood supply, moist lining for gases to dissolve.
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what is the cillia for?
tiny hairs that trap dust particles in the trachea
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what is mucus for?
carrying the dirt trapped by cilia to the mouth/nose to be snorted/ swallowed. hydrochloric acid kills bacteria in the stomach after mucus is swallowed.
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what substances does tobacco smoke contain?
nicotine (addictive stuff), carbon monoxide (poisons red blood cells), tar (blocks alveoli, paralyses cilia)
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organs in the circulatory system?
blood vessals, heart, arteries, veins, capillaries.
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blood vessals
transports substances
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heart
a double pump that pumps blood
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arteries
carries blood away from the heart
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veins
carries blood to the heart
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capillaries
carries food, waste, oxygen into body cells.
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right heart
pumps deoxygenated blood to lungs
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left heart
pumps oxygenated blood to the rest of the body
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atrium
- located at the top of the heart -contracts and forces blood into ventricles- has one way valves to force blood
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ventricle
below atrium- contracts and pumps blood out of the heart
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red blood cells
carries oxygen - no nucleus - biconcave (surface area)-red pigment (haemoglobin)
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white blood cells
fights infections-large nucleus
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platelets
helps cloth the blood-tiny fragments of cells- no nucleus
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plasma
carries food, waste and water etc.- looks like nothing (water)
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what is a drug?
a chemical substance that alters the way your body works -pleasure and medicinal
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stimulant
drugs that speeds the release of chemicals across the synapse
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depressant
drugs that slow down the release of the chemicals across the synapse
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analgesis
drugs that block the release of chemicals across the synapse
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hallucinogen
drugs that change the release of chemicals across the synapse
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functions of the skeleton
support, movement, protection
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fixed
cannot move eg skull
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hinge
move in one direction e.g elbow
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ball socket
move almost in all direction e.g hip
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pivot
allows to nod and turn e.g head
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gliding
bone that have flat surfaces which van slide over each other to move eg finger
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synovial joint
joints that contain synovial fluid
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ligamnets
holds bone in place to prevent dislocation
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how do muscles work
by contracting and pulling on bones
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Other cards in this set

Card 2

Front

what are the four factor of fitness? (The 4 s)

Back

speed, stamina, strength and suppleness (flexibility)

Card 3

Front

what does the respiratory system consist of?(7)

Back

Preview of the front of card 3

Card 4

Front

respiration word equation?

Back

Preview of the front of card 4

Card 5

Front

what happens when you inhale?

Back

Preview of the front of card 5
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