Download Respiration

Respiration
Life processes
Breathing
Gas exchange
Digestion
Circulation
Lungs
Oxygen
Blood
Heart
Nutrition
Diaphragm
Carbon dioxide
Blood vessels
Haemoglobin
Enzymes
Artery
Capillary
Vein
Energy
Glucose
alveoli – tiny air sacs in the lung across which gas exchange occurs
(singular = ‘alveolus’)
large intestine – a final part of the digestive system; absorbs water from the remaining
indigestible food matter
amino acid – individual components that make up proteins
lungs – a pair of organs in the chest that serve to remove carbon dioxide and
anus – the final opening of the digestive tract through
provide oxygen to the blood
which indigestible material is removed
minerals – chemical elements required by living organisms to grow, develop and stay
artery – a blood vessel that carries blood away from the heart
breathe – draw air into (inhale), and expel out of (exhale), the lungs
healthy, e.g. calcium, magnesium, potassium, sodium, zinc
obese – very overweight; a medical condition in which excess body fat has built up to the
extent that it may have an adverse effect on health
capillary – minute blood vessels connecting small arteries with small veins
oxygen – colourless gas required for aerobic respiration, O2
carbohydrate – essential component of living cells and a source of
energy; includes sugars and starch
plaque – a mixture of fat, cholesterol and blood cells that stick to the walls of blood vessels;
makes the arteries narrower so less blood can flow through
carbon dioxide – colourless gas formed during respiration, CO2
diaphragm – thin, dome-shaped muscle helps you breathe and separates the
lungs from your stomach and intestines
diffusion – the spreading out of particles through random motion from regions
protein – large group of compounds that are essential constituents of living cells; consist of
polymers of amino acids; essential in the diet of animals for growth and for repair
of tissues; can be obtained from meat and eggs and milk
rectum – final straight portion of large intestine, ending with the anus
of higher concentration to regions of lower concentration
respiration – chemical reactions that occur in the cells of living organisms;
enzyme – special proteins that can break
takes glucose and oxygen to release energy
large molecules into small molecules
small intestine – part of the digestive tract between the stomach and large intestine;
fat – a kind of body tissue used to provide energy and to store energy in the body and
insulate it against the cold
gas exchange – the transfer of gases contained in an organism; in a human, gases
contained in the blood exchange with gases contained in the air
glucose – a type of carbohydrate, obtained through digestion of the food we eat; human
body's key source of energy; important for respiration
gullet – the tube between the mouth and the stomach that food passes along
haemoglobin – oxygen-transport protein in the red blood cells of most vertebrates;
contains iron
heart – a muscular organ that pumps blood to your body
where much of the digestion and absorption of food takes place
stomach – a muscular, hollow organ that is part of the digestive system;
between the gullet and small intestine; secretes enzymes
and acid to aid food digestion
valves – allows blood flow in only one direction
vein – a blood vessel that carries blood towards the heart
villi – microscopic, finger-like projections in the lining of the small
intestine that absorb nutrients into the body
vitamin – compound required as a vital
nutrient in tiny amounts by an organism