Nervous System Part 2

What is a neuron?

• A single nerve cell

• A bundle of nerve cells

• A type of glial cell

• A blood vessel

What is the role of neurons in the nervous system?

• To transmit electrical impulses

• To carry blood

• To form bones

• To contract muscles

What is a plexus?

• A collection of neuron cell bodies

• A network of blood vessels

• An extensive network of axons located outside the CNS

• A type of muscle tissue

What do motor (efferent) receptors transmit?

• Sensory signals to the brain

• Action potentials from CNS to effector organs

• Light and sound signals

• Odour signals to the brain

What is the function of the node of Ranvier in a neuron?

Where are motor neurons located?

• In the CNS or in PNS ganglia

• In the heart

• In the liver

• In the kidneys

What is the primary role of the cell body in a motor neuron?

• To transmit signals

• To process and integrate information

• To insulate the axon

• To connect to muscles

What is the primary function of dendrites in a motor neuron?

• To transmit signals to other neurons

• To receive signals from other neurons

• To insulate the axon

• To produce neurotransmitters

What type of neurons have input and output connections with other neurons?

• Motor neurons

• Sensory neurons

• Central neurons (interneurons)

• Peripheral neurons

Which part of the nervous system is responsible for involuntary activities?

• Autonomic Nervous System

• Somatic Nervous System

• Central Nervous System

• Peripheral Nervous System