Transcript William Harvey - Noadswood Science

William Harvey
D. Crowley, 2007
Monday, March 28, 2016
William Harvey
 To know who William Harvey is, and what he did
Circulation
Have a go at the circulation crossword (stick in your book when done)
Across: -
Down: -
2 - Carbon
6 - Oxygen
8 - Up
10 - Limewater
11 - Respiration
1 - Dioxide
2 - Circulatory
3 - Blood
4 - Lungs
5 - Vessels
7 - Glucose
9 - Heart
12 - Pulse
Digestion - the processes involved (both
mechanical and physical) in breaking down food
Galen
 Galen was a Greek physician who dissected animals to see what they were like
inside - he assumed that humans were identical to animals
 He believed that blood passed from one side of the heart to the other through
invisible holes. He believed this because he could see small pits in the wall
separating the two sides of the heart (which he thought had holes in the end)
 He also found that unborn mammals had large holes in their hearts (we now
know these close at birth)
 Galen thought veins and arteries formed two separate systems, and that blood
flowed backwards and forwards in these vessels
William Harvey
 William Harvey was an English doctor who lived from 1578 to 1657. He made
the real breakthrough in our understanding of the circulation. Harvey made
careful observations of the heart and blood vessels and also carried out
experiments.
 He would only say something was a fact if he could prove it in his experiments
and he was not put off by superstitions, as previous scientists had been.
 He discovered that blood was pumped from the heart around the body, then
returned to the heart to be re-circulated.
 He also carried out experiments to prove that there are valves in veins that
allow blood to flow in one direction only.
Task
 Your task is to research how the circulatory system works - you need to create a
poster showing what you know
 Think about: the heart and how it pumps; what blood vessels there are (and
where they flow to / from); what is carried in the blood etc…
 Make a poster showing the key scientific facts - be original how you do this, but
the key is to include the scientific information!
 You could include how our opinions have changed over time / how humans are
different to some other animals etc…
Information
Exploring science, pages 18-20