Nervous System

Front

What type of neurons have their axons and dendrites fused with the soma to the side?

Back

Unipolar neurons.

Front

What is the refractory period in neurons?

Back

The refractory period is the time during which a neuron cannot generate another action potential.

Front

What structure separates the two cerebral hemispheres in the dura mater?

Back

Falx cerebri.

Front

What are the major parts that make up the brain stem?

Back

Medulla oblongata, pons, midbrain.

Front

Which cells help with immune defense in the CNS?

Back

Microglia.

Front

What is the function of oligodendrocytes?

Back

Oligodendrocytes provide support and insulation to axons in the central nervous system by forming myelin.

Front

What is the role of ependymal cells?

Back

Ependymal cells line the ventricles of the brain and produce cerebrospinal fluid (CSF).

Front

What is the primary function of the cerebellum?

Back

The cerebellum coordinates voluntary movements and maintains posture and balance.

Front

What is the difference between the central nervous system (CNS) and peripheral nervous system (PNS)?

Back

The CNS consists of the brain and spinal cord, while the PNS includes all the nerves outside the CNS.

Front

What is an action potential?

Back

An action potential is a rapid rise and fall in voltage or membrane potential across a cellular membrane.