U3L2 Review

Front

What are the thin myofilaments in the muscle cell?

Back

Actin

Front

What is the term for a single neuron and all the muscle fibers it stimulates?

Back

Motor unit

Front

What is the name of the neuron that sends signals to muscle fibers?

Back

Presynaptic neuron

Front

What are the small sacs that store neurotransmitters?

Back

Synaptic vesicles

Front

What is the gap between the presynaptic neuron and the postsynaptic neuron called?

Back

Synaptic cleft

Front

What is the pattern of signal transmission from the presynaptic neuron to the postsynaptic neuron?

Back

Electrical --> Chemical --> Electrical

Front

What protein is responsible for muscle contraction along with myosin?

Back

Actin

Front

What is the role of neurotransmitters in the nervous system?

Back

To transmit signals across the synaptic cleft between neurons and muscle fibers.

Front

What is the function of myosin in muscle cells?

Back

Myosin interacts with actin to facilitate muscle contraction.

Front

What is the difference between a motor neuron and a motor unit?

Back

A motor neuron is a nerve cell that sends signals to muscles, while a motor unit includes the motor neuron and all the muscle fibers it controls.