BIOL 4510 Lecture : lec 14

62 views37 pages
4 Jan 2013
Department
Course
Professor

Document Summary

Now that we have discussed the molecular properties of some key contractile proteins we will now discuss several important functional properties of the contractile system. These properties are very relevant with respects to both normal physiological function of muscle as well as the changes in function that occur in disease. In the document below, the text written in red represents additions made to original notes (i. e. these are the supplements). Contractile proteins determine the rate of relaxation of force (and pressure) As mentioned in previous lectures, a rise in ca2+ is responsible for the activation of the contractile system. Therefore, it is natural to assume that the relaxation of muscle is also controlled by ca2+. Although reductions in ca2+ are necessary for relaxation, under normal physiological conditions, the decline in ca2+ (cid:76)(cid:86)(cid:3)(cid:82)(cid:81)(cid:79)(cid:92)(cid:3)(cid:179)(cid:83)(cid:72)(cid:85)(cid:80)(cid:76)(cid:86)(cid:86)(cid:76)(cid:89)(cid:72)(cid:180)(cid:3)(cid:73)(cid:82)(cid:85)(cid:3)(cid:85)(cid:72)(cid:79)(cid:68)(cid:91)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:87)(cid:82)(cid:3)(cid:82)(cid:70)(cid:70)(cid:88)(cid:85)(cid:17)(cid:3)(cid:44)(cid:81)(cid:3)(cid:82)(cid:87)(cid:75)(cid:72)(cid:85)(cid:3) words, while ca2+ must fall for relaxation to occur, the actual speed of relaxation is dictated by the contractile proteins.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents

Related Questions