Summer Lecture Circulation 1 final

The ekg is due to the large voltage difference that

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: demands on the heart. Friday, July 20, 12 Cardiac output • Average contrac(on at rest: 135 ml - 60 ml = 75 ml, a typical stroke volume at rest – Stroke volume not constant maximum ~100 ml during strenuous exercise • Es(mate of Cardiac output 72 beats/min x 75 ml/beat 5400 ml/min, or about 5.4 liters average total blood volume is only 5 liters! Friday, July 20, 12 Supplying O2 to Myocardium O2 demands of the myocardium second only to the brain Friday, July 20, 12 Different Ways We can Track the Heartbeat: Electrical Proper(es • The Electrocardiogram (ECK or EKG): – Track the powerful electrical events occurring in the heart using electrodes on the surface of the body – The depolarizations do not occur evenly. – The EKG is due to the large voltage difference that develops between the different regions of the heart during the cycl...
View Full Document

This note was uploaded on 10/10/2013 for the course BIO 1440 taught by Professor Booker during the Spring '13 term at Cornell University (Engineering School).

Ask a homework question - tutors are online