Nervous System: Semester 2 _Test 1

Neurons have 2 major functional properties. Which is defined as the ability to respond to a stimulus and convert it into a nerve impulse?

• irritability
• conductivity

Which is defined as the ability to transmit the impulse to other neurons, muscles, or glands?

• irritability
• conductivity

The plasma membrane at rest

• polarized
• depolarized

If the stimulus is strong enough and the influx of sodium ions is great enough the depolarization activates a nerve impulse known as -

• depolarization
• action potential
• neurotransmission
• nerve pressure

The impulse is either conducted over the entire axon or it doesn’t happen at all

• depolarization
• action potential
• neurotransmission
• all or none response

K+ ions diffuse out to restore the negative charge on the inside of the membrane, an event known as

• depolarization
• repolarization
• neurotransmission
• all or none response

Chemicals released at the end of an axon terminal that diffuse across the synapse and transfer the nerve impulse to another nerve, muscle, or gland are called -

• axon terminals
• synapse
• neurotransmittters
• sodium-potassium pump

rapid, predictable, involuntary responses to stimuli

• axon terminals
• reflexes
• neurotransmittters
• stimuli

The exchange of ions completely reverses membrane polarity

• polarized
• depolarized

There are 2 basic types of reflexes. Which 1 occurs when pulling your hand away from a hot object

• autonomic reflex
• somatic reflex