Answer:
The correct option is C. Motor neuron does not fire action potentials
Explanation:
During contraction, the motor nerve passes down an action potential. A neuromuscular junction is formed by the motor neuron which stimulates the entry of calcium ions. The calcium ions bind to structures called as troponin which stimulates the binding of the filaments, actin and myosin. The filaments begin to contract by using ATP.
During relaxation, the action potential is stopped. Calcium is taken back into the sarcoplasmic reticulum. As a result, actin and myosin filaments do not link and hence, the contraction is stopped.
The esophagus is a long, thin tube that connects the throat to the stomach. It forms the important piece of the gastrointestinal tract and functions as the conduit for food and liquids that have been swallowed into the throat to reach the stomach
Your answer would be conductor. Hope this helps :)
Answer:
The stage happens in cutoplasm
Explanation:
In this step, enzymes split a molecule of glucose into two molecules of pyruvate, which releases energy that is transferred to ATP. The organelle called a mitochondrion is the site of the other two stages of cellular respiration.
