- Know
that the function of the circulatory system is to transport nutrients, waste,
oxygen, and carbon dioxide
- Trace
the pathway that blood travels through the heart and to the rest of the body
- Know
that the heart is a pump
- Explain
why heart rate equals pulse rate
- Know
how the structure of a blood vessel is related to its function:
-arteries are thick walled elastic vessels
carrying blood under high pressure away from the heart
-veins are thin walled vessels containing
valves with a larger diameter which carry blood under low pressure toward the
heart
-capillaries are very thin walled (one cell
layer thick) carrying blood from arteries to veins where an exchange of materials
occurs
- Understand
that blood flow is determined by pressure and resistance.
Blood pressure is
determined by:
- the force exerted by the heart
- the frequency of the heart beat
- the vessel diameter
Resistance is
related to the characteristics of the vessel:
- vessel size
- friction
- elasticity
- Know
the four major components of blood which are: plasma, red blood cells, white
blood cells, and platlets
- Explain
the specific jobs of each of the blood components
- Discuss
ways that cardiovascular health is determined by genetics and life style
- Know
that heart attacks and strokes are caused when a blockage prevents blood flow
to the heart or brain tissue
Activities:
Heart handouts
Blood composition lab
Card game about blood facts
Lecture about blood types and diseases
Video- Life Under Pressure/ Nye on Blood and Circulation
Create dough hearts
Dissection of beef hearts
Pulse rate lab
Blood pressure readings
Siphon lab
Flow rate lab
Goldfish capillary lab
Project(s):
In class create a dough heart
Flip book of blood flow through the heart