3. The heart
• Pump that moves the blood around the
body
• It is a muscular organ.
• It is made of 4 chambers(rooms).
4. Pulse
• Is a measure of how fast your heart is beating (It is the
number of beats your heart makes in one minute)
• N.B The heart beats faster or slower depending on what
we are doing.
5. How can we measure
pulse?
• You can feel your pulse at certain points on your body .
The easiest pace to feel it is in your wrist :
• 1)Use the first two fingers of your other hand.
• 2)Count the number of beats your heart makes in one
minute.
6.
7. Average heart beat is
about 80 beats/min.
Exercise
Heart rate increase (because
your muscles are working
harder and need more oxygen
to keep going and your lungs
also work harder to get more
oxygen)
Sleep
Heart rate
decreases(because your
muscles need less
oxygen , so your heart
sows down)
8. Stethoscope
• Instrument used by doctors to listen to noises in
our chest
( It funnels the sound into the ears and cuts out
other noises)
