Any Info on the process of Neurons and Muscle Fibers

>>8630106

Woah. I have that book on my bookshelf from undergrad a few years ago.

"The arrangement of thick myosin and thin actin filaments in the relaxed state is shown in the top diagram. In the presence of ATP and Ca2+, the myosin heads extending from the thick filaments walk toward the (+) ends of the thin filaments. Because the thin filaments are anchored at the Z disks (purple), movement of myosin pulls the actin filaments toward the center of the sarcomere, shortening its length in the contracted state, as shown in the bottom diagram."

Hopes that helps. kekekek.

>>8630134
It does, thanks man, the only reason i lack some confidence for this is because i bombed when we went over vocabulary.

>>8630139

Yeah, you are bringing back many memories of 6+ hour cram sessions. Good luck!

>>8630139
>not using flash cards
Dude, vocabulary is the only thing flashcards are best for in my opinion.

>>8630213
Just adding to >>8630134 IIRC, the presence of Ca2+ free the binding site for myosin on the actin filament, which then walks along the actin due to the alternating presence of ATP and ADP. The action is stopped when ion pumps are used to exchange Ca for Na/K, causing the binding sites to be blocked again. Did this in passing last year. Bio vocab is a pain

Good luck with the test

>>8630106
anatomy prof here: try reading textbook