1. Do Now: Wrinkles on the Brain

2. Do Now: Wrinkles on the Brain
According to the New York Times, recent studies of Albert Einstein’s preserved brain suggest that his intelligence may actually have been due in part to the absence of a fissure in the inferior frontal lobe which is an area involved in mathematical thinking.
OPINION QUESTION:
Do you think a human brain has MORE or LESS wrinkles compared to a sheep brain? Justify or explain your answer!

3. Whiteboard Activity: Opinion Questions about the Cardiovascular System
Team leader - Discuss with your group.
(every group members shares their opinion)
Recorder – Write on the whiteboard.
How does the heart deliver oxygen and nutrients to all parts of the body?
Why does your heart beat faster when you exercise?

4. Whiteboard Activity: Opinion Questions about the Cardiovascular System
How does the heart deliver oxygen and nutrients to all parts of the body?
Why does your heart beat faster when you exercise?

5. Whiteboard Activity: Opinion Questions about the Cardiovascular System
Recorder – write on the whiteboard
What does your group want to learn in this unit?
Write at least 2 question about the heart.

6. Notes: The Heart
Glue this picture on the next blank page of your notebook and take notes.
Heartbeat video

7. The Heart
Figure 11.2a

8. The Heart Wall Three layers (cardio/cardium = heart)
Epicardium (epi = outer/outside)
Outside layer
Connective tissue layer
Myocardium (myo = muscle)
Middle layer
Mostly cardiac muscle
Endocardium (endo = inside)
Inner layer

9. The Heart Chambers Right and left side act as separate pumps
Four chambers
Atria (2) superior
Receiving chambers (blood)
Right atrium
Left atrium
Ventricles (2) inferior
Discharging chambers (blood)
Right ventricle
Left ventricle

10. Differences in Right and Left Ventricles
Make an observation about the left and right ventricles.
Why do you think the left ventricle has more muscle tissue?
Figure 11.4

11. The Heart Valves
Allow blood to flow in only one direction to prevent backflow
Four valves
Atrioventricular (AV) valves—between atria and ventricles
Open during heart relaxation and closed during ventricular contraction
Semilunar valves—between ventricle and artery
Closed during heart relaxation but open during ventricular contraction

12. The Heart: Associated Great Vessels
Arteries (away from the heart)
Aorta
Leaves left ventricle
Pulmonary (lungs) arteries
Leave right ventricle

13. The Heart: Associated Great Vessels
Veins (toward the heart)
Superior and inferior venae cavae
Enter right atrium
Pulmonary veins (four)
Enter left atrium

14. Classwork Packet: The Circulatory System
Work with your lab group to complete..
Diagram of the heart (choose any two colors)
#13 = aortic valve (textbook page 345) (30 min)
Classwork Packet: The Circulatory System
#1 – 5 and SELF SCORE
Classwork Packet: The Circulator System
#6 – 19 and SELF SCORE
Resources – heart model, textbook, notes, diagram in yellow folder

15. EXIT SLIP: THE HEART On your own… Open note
You will Turn in the EXIT SLIP
The Circulatory System Packet (1 – 5)