1. Mr Muddle! Read these ... Think of some categories
Exchange of materials
Contains valves
One layer, 1 cell think
Endothelium cells surround lumen
Carry blood
Large lumen
Needs action of muscles to keep blood flowing
3 layers; elastic fibres, muscle and endothelium
Stretch and recoil
Pulse found
Smooth muscle contract for vasoconstriction
Smooth muscle dilate for vasodilation
Read these ...
Think of some categories
Place the statements in the correct category.

2. Learning Outcomes Examine the structure of the blood vessels
Compare the structures

3. Cardiovascular System What do you know already?
Needed for?
Includes ....
Controlled by?
Affected by?

4. Evaluate the procedure .....
Sources of error?
Effectiveness of the procedure?
Improvements of the apparatus?

5. Improvements ....
Future use string rather than paperclips - as paperclips more susceptible to breaking

6. How do we know this?
Look under the microscope and examine the differences

7. All have a central cavity; LUMEN
An endothelium lines the central lumen of each of the different blood vessels

8. Arteries (EME) Arteries have;
an outer layer of connective tissue containing elastic fibres
a middle layer containing smooth muscle with more elastic fibres.
inner endothilium layer.

9. The elastic walls of the arteries stretch and recoil to accommodate the surge of blood after each contraction of the heart.
The smooth muscle can contract or relax causing vasoconstriction or vasodilation to control blood flow.

10. Veins
Veins have an outer layer of connective tissue containing elastic fibres but a much thinner muscular wall than arteries.

11. Veins
Valves prevent the back flow of blood (by eddy currents)

12. Capillary
Capillaries allow exchange of substances with tissues. (more next week)

13. Capillary Observe your capillary bed!
Squeeze you nail (no polish) what happens?

14. True or False?
Carotid vein returns deoxygenated blood from the head to vena cava
Renal artery carries blood to the kidneys to be purified
Pulmonary vein carries deoxygenated blood from the heart to the lungs
Hepatic portal vein carries deoxygenated blood from gut to liver
Coronary vein carries oxygenated blood from lungs to the heart
Hepatic artery carries deoxygenated blood from the liver to the vena cava

15. True or False? F jugular T F artery T F pulmonary F vein
Carotid vein returns deoxygenated blood from the head to vena cava
Renal artery carries blood to the kidneys to be purified
Pulmonary vein carries deoxygenated blood from the heart to the lungs
Hepatic portal vein carries deoxygenated blood from gut to liver
Coronary vein carries oxygenated blood from lungs to the heart
Hepatic artery carries deoxygenated blood from the liver to the vena cava
F jugular T
F artery T
F pulmonary
F vein