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Chapter 3 Circulatory System, lungs - Coggle Diagram
Chapter 3 Circulatory System
components of blood
circulatory system
the bodes transport system that consist of the lung, heart vessels and blood
blood
a liquid containing four components each with a specific function
plasma
contans mostly water so can be transported easily
red blood cells
contains HAEMOGLOBIN which reacts with the oxygen to create OXYHAENOGLOBIN
platelets
they have enzymes to cause blood to clot when there is damage to the blood vassals
whites blood cells
part of the immune system
fights pathogens
by engulfing them or creating antibody's to attack them
blood vessels
three different types of vessels that carry blood
arteries
pump blood away from the heart
thick walls and big
narrow lumen
pump blood at high pressure
veins
thin wall
carrying blood at low pressure
wider lumen
capillaries
walls one cell thick
allows substance to pass into and out of the cell
e.g.
oxygen
CO2
lumen
the name given to the passages ways inside the tube
Heart Structure and Function
key terms
double cirulation
the heart has a double pump and circulation
the PUMULARY CIRCUIT (right side) pumps blood to the lungs and back to the heart
the SYSTEM CIRCUIT (left side) pumps blood to the body and back to the heart
oxygen left deoxygenated right
Cardiac output
key terms
cardiovascular fitness
the ability to exercise continuously for extended periods without tiring
heart rate
measure the heart beats per minute (bpm) when the ventricles are contracting
stroke volume
the volume of blood pumped out of the heart by each ventricle in one heart rate
an average person has a stroke volume of around 70ml whereas an athlete is 90ml
equations
heart rate x stroke volume = cardiac output
lungs
heart
body
