P5 Human Circulatory System (Concept Map)
Primary 5 Science — Concept Map
Created by Miss Clarissa Ng · www.clartutors.com
Circulatory System
transports substances to all parts of the body
three components
Heartmuscular pump · between the lungs · protected by the ribcage
Blood vesselsarteries · veins · capillaries
Bloodplasma · red and white blood cells · platelets
Red cells carry oxygenRed blood cells carry oxygen to all parts of our body.
flow of blood
Lungs → heart → body → heart → lungsrich in oxygen on the way out · poor in oxygen on the way back
humans vs fish · humans vs plants
Fish — single circulationblood passes through the heart once
Plants — no heartfood-carrying and water-carrying tubes instead
Double circulationblood passes through the heart twice in one circuit
Single circulation in fishblood passes through the heart once in one circuit
exercise & heart rate
BE PORED — Body needs Energy → heart Pumps faster → more Oxygen → greater Respiration → more Energy → Dioxide removed faster
Narrowed blood vessels → fatty deposits → smaller opening → heart pumps faster to deliver the same oxygen and digested food
the heartbeat
A rhythmic cycleThe heart contracts and relaxes in a rhythmic cycle.
One beatone full contraction and relaxation
Beats per minuteheartbeats in one minute, written as bpm
systems working together
With the digestive systemdigested food and water enter it to travel around
With the respiratory systemoxygen from the lungs enters it to be circulated
getting rid of carbon dioxide
Blood carries it to the heartCarbon dioxide enters the blood, which flows to the heart.
The heart pumps it to the lungsThe heart pumps the blood rich in carbon dioxide to the lungs.
Out through the nosecarbon dioxide leaves the body through the nose
Transports digested food, oxygen and water · removes waste like carbon dioxide · protects the body from infection