BIO 210 Ch. 11-15 Nervous System Flashcard

Front

What is the most common type of chemical synapse?

Back

Axodendritic synapse.

Front

What causes the unequal distribution of ions across the plasma membrane of a neuron?

Back

The presence of ion channels and pumps.

Front

What is the resting membrane potential (RMP) of a neuron?

Back

-70 mv.

Front

How do electrical synapses differ from chemical synapses?

Back

Electrical synapses allow direct flow of ions between neurons, while chemical synapses use neurotransmitters.

Front

What is the primary function of the sympathetic nervous system?

Back

Activates the body for stress responses.

Front

What is the primary function of the parasympathetic nervous system?

Back

Promotes relaxation and recovery.

Front

What role do neurotransmitters play in chemical synapses?

Back

They transmit signals between neurons.

Front

What is the significance of ion channels in neurons?

Back

They facilitate the movement of ions across the plasma membrane, contributing to action potentials.

Front

What is an action potential?

Back

A rapid change in membrane potential that propagates along the neuron.

Front

What is the difference between afferent and efferent neurons?

Back

Afferent neurons carry signals to the central nervous system, while efferent neurons carry signals away from it.