The answer is step 3. Nerve impulse on a muscle cell induces release of calcium ions
Steps of a muscle contraction are:
1. Nerve impulse travels down the axon and causes a release of acetylcholine.
2. Acetylcholine binds to the receptor of a muscle cell.
3. Nerve impulse on a muscle cell induces a release of calcium ions.
4. Calcium ions induce exposing of myosin to actin.
5. Sliding of actin filaments past myosin filaments.
6. The muscle contract.
Answer:
I don't know, and just to let you know B is not a number its a letter
Explanation:
Stem cell research has and can lead to medical cures.
Answer:
The correct answer is "stress relaxation response."
Explanation:
Smooth muscle cells relaxes after being stretched which is called "stress relaxation response". If we explain it a bit further, smooth muscle cells lack gap junctions and because that contraction of a single cell doesn't spread to adjacent cell resulting with no strong contraction.
