The Nervous System and Muscle Control

Front

The neurotransmitter which diffuses across the junction and attaches to the receptor muscle which causes the release of calcium in the sarcomere is called:

Back

Acetylcholine

Front

The region where a motor neuron comes in close contact with a muscle cell is known as:

Back

neuromuscular junction

Front

Axon, axon terminals, dendrites and cell body are all parts to what?

Back

Neurons

Front

A motor unit is made up of _______________.

Back

a motor neuron and the muscle fibers it innervates

Front

All muscle fibers within a motor unit will contract...

Back

if the action potential is above the threshold

Front

Name the nerve which is most responsible for stimulating a skeletal muscle to contract.

Back

motor neuron

Front

What part of the motor neuron transmits an impulse from the cell body towards the motor end plate?

Back

Axon

Front

A neuromuscular junction refers to

Back

Where a motor neuron meets a muscle fiber

Front

The 'all or none' response of muscle action states that

Back

The muscle fibers within a motor unit will only contract if a certain level of electrical impulse (action potential) is reached. When this level/threshold is reached then all the fibers within the motor unit contract will contract at the same time, with the same force.

Front

Within a whole muscle there is: One motor unit, Multiple motor units, each with the exact same action potential thresholds, Multiple motor units, each with different action potential thresholds, Only motor units that can be classified as 'large'

Back

Multiple motor units, each with different action potential thresholds