Transcript TOPIC: Transport AIM: What are the 3 types of blood vessels?

Topic: Circulatory System
Aim: Describe the structure and function of
the 3 types of blood vessels.
Do Now: Practice Questions…
HW: Read pgs.525-526. Write a paragraph
describing enzymes, their role in digestion
and their role in other life processes.
(Packing Fat Reading Comprehension due on
Monday!)
Review: Identify the part of blood being
described.
1. Most numerous blood cell.
2. Carries enzymes.
3. Involved in blood clotting.
4. Carries oxygen.
5. Largest blood cell.
6. Made up of 90% water.
7. Involved in blood clotting.
8. Protect the body against disease.
9. Carries hormones.
Did you know…
• The body of an adult contains over
60,000 miles of blood vessels!
• An adult's heart pumps nearly 4000
gallons of blood each day!
• The average three-year-old has two
pints of blood in their body. The
average adult has at least five
times more!
Arteries
Capillaries
Veins
http://www.youtube.com/watch?v=A-HfDPJ3R00
Capillaries
Arteries
Veins
Branching arteries in the eye
Capillaries
Arteries
Veins
Capillaries
Arteries
Veins
Arteries
Capillaries
Veins
Arteries
Capillaries
Veins
-AWAY from heart
-THICK and ELASTIC
-Experiences most pressure (PULSE)
Arteries
-AWAY from heart
-THICK and ELASTIC
-Experiences most pressure (PULSE)
Capillaries
-SMALLEST
-Connect arteries to veins
-Exchange (diffusion) of materials bw
blood and cells
- O2: from alveoli into capillaries
- CO2 and H2O vapor: capillaries  alveoli
Veins
Arteries
-AWAY from heart
-THICK and ELASTIC
-Experiences most pressure (PULSE)
Capillaries
-SMALLEST
-Connect arteries to veins
-Exchange (diffusion) of materials bw
blood and cells
- O2: from alveoli into capillaries
- CO2 and H2O vapor: capillaries  alveoli
Veins
-TO the heart
-THIN and NOT VERY ELASTIC
-VALVES (prevent backflow of blood)
http://www.youtube.com/watch?v=A-HfDPJ3R00
Artery
Vein
ARTERIES
CAPILLARIES
VEINS
Blood vessels in the right arm
and shoulder
Arteries
of the
lower leg
& blood
supply to
the face
& skull
Let’s summarize…
1. Identify the three types of blood vessels.
2. Why are arteries very muscular?
3. Identify where each type of blood vessel
carries blood?
4. Why are capillaries so thin?
5. Why do veins have valves?
6. In which blood vessel is your pulse felt?
Explain why.
Review: Identify the type of blood vessel being
described.
1. Low blood pressure
2. Where diffusion of substances occurs.
3. Contains valves
4. Carry blood away from the heart
5. Connects arteries and veins
6. Carry blood away from the heart
7. Red blood cells move in single file
8. Elastic and flexible.
9. Used to feel pulse.