BIOC32H3 Lecture Notes - Lecture 6: Cardiac Muscle Cell, Purkinje Fibers, Atrioventricular Node

78 views7 pages
22 Oct 2016
School
Course
Professor

Document Summary

We discussed the heart and the cardiac cycle and the functioning of the valves. We discussed the structure of cardiac muscle- emphasis on intercalated discs, boundary between one cardiac muscle cell and the next. At the intercalated disc, we find two noteworthy structures- desomosomes. They link one cardiac muscle cell to the adjacent muscle cell. We don"t have the coming apart of cardiac muscle cells. They also permit the transmission of contractile force to one cardiac muscle cell to another. If one heart muscle cell is contracting, it takes the force of that contraction and applying it to an adjacent cell and pulling it towards it. We have this ability to transmit the contractile forces among these cells. We also have gap junctions, structures that allow for cytoplasmic connection between 2 adjacent muscle cells. These allow for ions to freely pass from one cardiac muscle cell to the next.

Get access

Grade+
$40 USD/m
Billed monthly
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
10 Verified Answers
Class+
$30 USD/m
Billed monthly
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
7 Verified Answers

Related Documents

Related Questions