350 likes | 364 Views
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.
E N D
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. • Most numerous blood cell. • Carries enzymes. • Involved in blood clotting. • Carries oxygen. • Largest blood cell. • Made up of 90% water. • Involved in blood clotting. • Protect the body against disease. • 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!
Capillaries Arteries Veins
Capillaries Arteries Veins
Capillaries Arteries Veins
Artery Vein
ARTERIES CAPILLARIES VEINS
Arteries of the lower leg & blood supply to the face & skull
Let’s summarize… • Identify the three types of blood vessels. • Why are arteries very muscular? • Identify where each type of blood vessel carries blood? • Why are capillaries so thin? • Why do veins have valves? • In which blood vessel is your pulse felt? Explain why.
Review: Identify the type of blood vessel being described. • Low blood pressure • Where diffusion of substances occurs. • Contains valves • Carry blood away from the heart • Connects arteries and veins • Carry blood away from the heart • Red blood cells move in single file • Elastic and flexible. • Used to feel pulse.