Nerves and Neurons Review

Front

What are cones responsible for in the eye?

Back

Cones are photoreceptor cells in the retina responsible for detecting bright light and color.

Front

When is the potassium channel open during the action potential?

Back

The potassium channel is open during repolarization only.

Front

What is the synaptic cleft?

Back

The synaptic cleft is the small gap between the presynaptic and postsynaptic neurons where neurotransmitters are released.

Front

Which part of the eye contains light-sensitive nerves?

Back

The retina contains light-sensitive nerves.

Front

What is the function of dendrites in a neuron?

Back

Dendrites are extensions of a neuron that receive signals from other neurons.

Front

What is the role of the axon in a neuron?

Back

The axon transmits electrical impulses away from the cell body to other neurons or muscles.

Front

What is myelin and its function?

Back

Myelin is a fatty substance that insulates axons and increases the speed of nerve impulse transmission.

Front

What are rods responsible for in the eye?

Back

Rods are photoreceptor cells in the retina responsible for vision in low light conditions.

Front

What is a neurotransmitter?

Back

A neurotransmitter is a chemical messenger that transmits signals across the synaptic cleft between neurons.

Front

What is the function of the cell body in a neuron?

Back

The cell body contains the nucleus and organelles, and it integrates signals received from dendrites.