Nervous System 2

Front

What part of the neuron is responsible for receiving signals?

Back

Dendrite

Front

What part of the neuron conducts action potentials?

Back

Axon

Front

True or False: Sensory stimuli that generate reflexes are processed by the brain before signals are sent to effectors.

Back

False

Front

What happens when a neurotransmitter enters the post-synaptic cell?

Back

It causes depolarization.

Front

How does a neurotransmitter cause depolarization in the post-synaptic membrane?

Back

By opening up Na+ channels.

Front

What is the role of dendrites in a neuron?

Back

To receive incoming signals from other neurons or sensory receptors.

Front

What is an action potential?

Back

A rapid rise and fall in voltage or membrane potential across a cellular membrane.

Front

What is the function of the axon in a neuron?

Back

To transmit action potentials away from the cell body to other neurons or muscles.

Front

What is the significance of neurotransmitters in neural communication?

Back

They transmit signals across synapses between neurons.

Front

What is depolarization in the context of neuron signaling?

Back

A decrease in the membrane potential, making the inside of the cell more positive.