B3c Keep it Moving Questions

B3c Keep it Moving Questions paper

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  • Created on: 02-05-12 09:05
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B3c- Keep it Moving
1. The job of the heart is to p......... blood to the l............. and around the
b...............
2. Patients, who need a heart transplant usually have to wait for a long time. The
reasons for this are:
S............. of d...................
Patients need heart with a matching ................ type, right ................ aand ................
(this is the biological reason!)
3. The functions of the cells in blood
red blood cells transport ................ ;
white blood cells ................ against disease;
platelets help blood ................
4. Blood also carries food and carbon dioxide.
Complete the table to show where oxygen, food and carbon dioxide enter and leave
the blood.
where substance enters where substance leaves
the blood the blood
_
oxygen lungs
_
food body tissues
carbon _
body tissues
dioxide
5. ................ are under pressure, as the heart is ................ blood through these. Arteries
carry blood ................ from the heart and Veins carry blood ................ to the heart so
they are not under ................ .
................ connect arteries to the veins. Exchange of substances, such as ................ ,
g................ , c................ d................ and water happens between the capillaries and the
muscles.
Cutting an artery is more serious than cutting a vein because it bleeds much ................
as they are under ................ .
6. Sometimes bleeding stops from small cut wounds, before any medical treatment.
This is because...
Blood ................
Because of p................
Higher only:
7. During her heart transplant operation, Ciara is given blood.
This makes sure she has enough oxygen travelling around her body.

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What substance travels in the direction show by the arrows?
............................
b) Alveoli are adapted for efficient diffusion. Describe two ways in which
they are adapted:
.......................................................................................................................................................
...............................................................................................................
c) Oxygen combines with haemoglobin in red blood cells. Write a word
equation to show how oxygen combines haemoglobin, in the lungs.
..................................................................................................................................
d) In the muscles and tissues, haemoglobin releases oxygen. Write
another word equation showing this:
..................................................................................................................................…read more

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