2. The Cardiovascular System Entertainment Group Presents : The Heart: A Love Story Human A & P J. Allen

3. Stats of the Heart Located in the __________ cavity Shaped like an upside down ______ ________is the top portion, and ________is the bottom left tip Covered by the sac-like membrane _____________ –Prevents overstretching, protects, anchors heart Muscular portion is made up of ___________ muscle tissue, which is involuntary, striated, and contains ______________ disks Myocardium contains many ____________, as the heart needs tons of energy apex base

4. GROOVY

5. STRUCTURE 2 upper chambers called ___________ 2 lower chambers called____________ Divider between R and L sides called the ___________ –Interatrial and Interventricular septa Septum

6. ATRIA AND VENTRICLES RIGHT ATRIUM— RECEIVES ______________ BLOOD FROM THE BODY RIGHT VENTRICLE— PUMPS TO _______ (PULMONARY CIRC) LEFT ATRIUM— RECEIVES ______________ BLOOD FROM __________ LEFT VENTRICLE— PUMPS BLOOD TO ENTIRE _______ (SYSTEMIC CIRC) –THICKER __________________

7. The Pumping Heart What does the blue represent? What does the red represent?

8. Heart Valves REVENT __________OF BLOOD A/V—ATRIOVENTRICULAR –TRICUSPID— 3 flaps-- __________side –BICUSPID (___________)—2 flaps– left side SEMILUNAR—between ventricles and ___________ –PULMONARY—r. ventricle to ____________ artery –AORTIC– l. ventricle to the ______________ CHORDAE TENDINAE –“________________”

9. DIAGRAM chordae tendinae septum papillary muscle

10. ELECTRICAL CONDUCTION 1. ____ node (sinoatrial) – Sets the rhythm – Heart’s natural _____________ 2.___ node (atrioventricular) 3.AV Bundles Along septum 4.________Fibers throughout heart muscle Q) What instrument is used to stop the heart? DEFIBRILLATOR Q) Why stop the heart during a heart attack? TO ALLOW THE PACEMAKER TO RESET

11. ELECTRICAL CONDUCTION CHEMICAL REGULATORS OF THE HEART: 1.Hormones (4 main) Increase: –______________ Decrease: –______________ 2. Ions Increase: –___________ Decrease: –________&________ The ________________ is the cardiac and respiratory center of the brain The nerve responsible for conducting to the heart is called the ________nerve. (10 th Cranial Nerve)

12. Lup dup lup dup lup dup lup Blood Pressure –“LUP” When A/V valves close, and ventricles contract, it is termed _____________ –“DUP” WHEN A/V VALVES OPEN AND VENTRICLES ARE RELAXED, IT IS TERMED ______________ –Bp is measured as ____________ Normal bp is __________ Read as: _______________________ Measured by an instrument called a ______________________

13. Lup dup lup dup lup dup lup Q) WHAT DOES IT LOOK LIKE? http://www.getbodysmart.co m/ap/circulatory/heart/cardi accycle/cardiaccycle.html

14. ELECTROCARDIOGRAM EKG OR ECG Monitors heart rhythm Detects presence of a _______