Air enters the body when we _____ and leaves the body when we ____.
Exhale, inhale
Inhale, breath in
Inhale, Exhale
Breath out, Exhale
Veins are ____ in colour.
Red
Blue
Green
White
_______ are the tubes carrying blood which run deeper in the body so we can't see them.
Blood vessels
Arteries
Bronchi
Veins
Heart beats _____ times in a minute.
40-60
60-70
80-90
70-80
Throwing waste outside the body is called_______.
Circulation
Excretion
Respiration
Digestion
There are ___ pairs of ribs.
10
12
14
16
The brain weighs around _________.
5kg
10kg
1kg
500gms
Long thin wires that carry messages are called_______.
Bones
Muscles
Tendons
Nerves
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