4. Foundations. Nervous System

What are the two divisions of the nervous system?

• Central and Lower nervous systems

• Central and Peripheral nervous systems

• Lower and Cerebral nervous systems

• Central and Muscular nervous systems

A nerve cell is called a:

• neutron

• nerve

• neuron

• synapse

Dendrites are part of a neuron that carries electrical signals _______ the cell body.

• to

• away

• in between

Axons are part of a neuron that send electrical signals ________ the cell body

• to

• away from

• in between

Which part of the peripheral nervous system generates a motor output response?

• Afferent

• Integration

• Efferent

• Autonomic

Which of the following is under somatic control?

• cardiac muscle

• smooth muscle

• glands

• skeletal muscle

Which section of the neuron insulates the cell?

• Schwann Cells

• Myelin Sheath

• Nodes of Ranvier

• axon

What is the resting membrane potential of a neuron?

• -70mv

• -15mv

• 15mv

• 100mv

What creates the negative charge in the cell at rest?

• the imbalance of ions

• a balance of NA+ and K+ ions

• low levels of ATP

• more Ca+ inside the cell

Depolarisation occurs when NA+ is pumped into the cell and the K+ channel closes?

• True

• False