Which of the following is most accurate when discussing the sliding filament theory?
1. Nerve impulse (action potential) arrives at the neuromuscular
junction triggering the release of the neurotransmitter acetycholine
2. Sodium binds to the protein troponin which is located on the actin
myofilament
3. When energy (ATP) is released, troponin slides over actin and the
muscle shortens
4. Actin heads bend (cross bridge) to attached to the exposed binding
sites on the myosin myofilament

[content deleted] - user123802726recklesschicken

answer: oof wait

explanation:

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

no u