ANATOMY AND PHYSIOLOGY MUSCLE CONTRACTION CYCLE - LABEL THE ORDER OF SEQUENCES A-J?
Ok here's the question. It wants to know the correct sequence A-J of the muscle contraction cycle. I am having trouble with a few of the steps. Any help on this will be greatly appreciated!! I will give the best answer. Thanks in advanced!
Place the following in the correct sequence.
A) myosin head resets position
B) sarcomere shortens
C) troponin bids Ca++ and reconforms, displacing tropomyosin
D) motor potential travels down motor neuron
E) excitation runs down T tubule to SR
F) SR releases Ca++ onto sarcomere
G) motor neuron releases ACh into NMJ
H) powerstroke drives sliding filaments
I) active pumps drive Ca++ to SR
J) myosin head hydrolyzes ATP, forms crossbridge
- 7 years agoFavorite Answer
DGEFCJHBAISource(s): some pts r missing bt i tried my best, hope its correct.
- MariaLv 44 years ago
If you're doing a powerpoint presentation, I'd start by outlining everything in the beginning; maybe like... I. Intro - Muscle contractions [type of muscle; eg. cardiac?, smooth?, skeletal?] A. Location of muscle - purpose B. Nerves that innervate the muscle type C. 2 Processes - Signal transduction and Force Generation II. Signal Transduction - A. Neurons - Action potentials, IPSP's, EPSP's, etc, B. Neuromuscular Junction - synaptic processes, NT's/receptors, etc C. Muscle cells- post-synaptic signalling, calcium release, etc III. Force - contraction A. Structures and proteins involved B. etc. etc. Hope this helps somewhat, I'm out of steam