Answer:the 1st one is 2 1/2 ml the 2nd is um 1ml the 3rd is 4 1/4ml and the 5th is
23ml
Explanation:
Answer:
The answer is B: All the muscle cells innervated by a single motor neurorn.
Explanation:
It is called a motor unit, all muscle fibers that are innervated by a motor neuron cell. A motor neuron cell can establish contact with up to 150 muscle fibrils, which when activated causes their simultaneous contraction, therefore, all the muscle fibers of a motor unit contract and relax at the same time.
