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Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings
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Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings
Important Announcements
Last week (33)… • Lab: Measuring Lung Capacity • The Heart • Vocabulary Quiz – The Respiratory System This week (34)… • Lab: Heart Rate and Recovery • Lab: Measuring Blood Pressure • Vocabulary Quiz – The Heart and Lungs
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings
Important Announcements
Upcoming Labs (Week 34 - 36)… 1. Heart Rate and Recovery 2. Measuring Blood Pressure 3. ECG 4. Heart Dissection 5. Cardiologist
Start the Final Project = Wednesday May 17th
Thursday May 18th and Friday May 19th = Unit #3 Test Heart and Brain
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings
Notes: The Heart
Glue this picture on the next blank page of your notebook and take notes.
Go to Ms. Fine’s PBS-HSA website
and watch the …
Heartbeat video
Write all text in BLUE in your notebook!
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings
The Heart
Figure 11.2a
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The Heart Wall § Three layers (cardio/cardium = heart)
1. Epicardium (epi = outer/outside) § Outside layer § Connective tissue layer
2. Myocardium (myo = muscle) § Middle layer § Mostly cardiac muscle
3. Endocardium (endo = inside) § Inner layer
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings
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/Pumping chambers (blood)
§ Right ventricle § Left ventricle
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Discussion Question: 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?
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings
The Heart Valves § Allows 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
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The Heart: Associated Vessels (arteries or veins) § Arteries (away from the heart)
§ Aorta
§ Leaves left ventricle
§ Pulmonary (lungs) arteries
§ Leave right ventricle
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The Heart: Associated Vessels (arteries or veins) § Veins (toward the heart)
§ Superior and inferior venae cavae
§ Enter right atrium
§ Pulmonary veins (four)
§ Enter left atrium
Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings
Classwork Packet: The Circulatory System Work with your lab group to complete..
1. Diagram of the heart (choose any two colors)
#13 = aortic valve (textbook page 345) (30 min)
2. Classwork Packet: The Circulatory System
#1 – 5 and SELF SCORE
3. Classwork Packet: The Circulator System
#6 – 14 and SELF SCORE
Resources – heart model, textbook, notes, diagram in yellow folder