Â 1. What role does a play in the actual contraction of a muscle ber (skeletal...

80.2K

Verified Solution

Question

Medical Sciences

Â 1. What role does a play in the actual contraction of a muscle ber (skeletal and cardiac)?
Â 2. How do cardiac muscle and skeletal muscle differ in the role of Cain stimulation of muscle fibers? How does this difference affect the changes in membrane potential in cardiac muscle?
Â 3. Based on the information in questions 1 and 2 explain why cardiac muscle does not demonstrate tetanic muscle contractionsÂ

Answer & Explanation Solved by verified expert

4.4 Ratings (948 Votes)

1Skeletal muscleA signal comes and relaeasesthe neurotransittor at the neuromuscular junctionACh it binds tothe receptor present on the muscle cell membraneThe signal travelsdeep into the muscle through thr TtubulesSurrounding theTtubule there is sarcoplasmic reticulum presentIt stores theCa2 ionsOn the Ttubule thre are receptors calledDihydropuridine receptor and on the surface of the sarcoplasmicreticulum there are Ryanidine receptorBoth of these channelsinteract with each other resulting in the opening of the channelsand allow Ca2 ions flow out into the cell out of the sarcoplasmicreticulum This inititaes the muscle contractionThe calcium bindsto the troponina proteinThe activated troponin causes theconformational change in the protein See Answer

Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:

Unlimited Question Access with detailed Answers
Zin AI - 3 Million Words
10 Dall-E 3 Images
20 Plot Generations
Conversation with Dialogue Memory
No Ads, Ever!
Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!

Become a Member