Nervous System & Senses Review

What is the ultimate control center and overseer of all communication in the body?

• The circulatory system

• The nervous system

• The digestive system

• The respiratory system

Which process involves receiving stimuli from sensory receptors?

• Motor output

• Sensory input

• Integration

• Digestion

Tags

NGSS.MS-LS1-8

How many processes does a bipolar neuron have?

• One

• Two

• Three

• More than three

What is the role of the Na⁺/K⁺ pump in the conduction of a nerve impulse?

• It moves 3 Na⁺ into the cell and 2 K⁺ out of the cell.

• It moves 3 Na⁺ out of the cell and 2 K⁺ into the cell.

• It moves 2 Na⁺ out of the cell and 3 K⁺ into the cell.

• It moves 2 Na⁺ into the cell and 3 K⁺ out of the cell.

Tags

NGSS.HS-LS1-3

How do voltage-gated channels operate?

• They open and close in response to a specific chemical binding.

• They open and close when the membrane is physically deformed.

• They open and close in response to changes in the membrane potential.

• They open and close randomly without any specific trigger.

What is the function of ligand-gated channels?

• They open when the membrane is stretched.

• They open when a specific chemical binds to the channel.

• They open in response to changes in temperature.

• They open randomly without any specific trigger.

What is the primary function of excitatory neurotransmitters?

• They hyperpolarize the postsynaptic neuron.

• They open ion channels and depolarize the postsynaptic neuron.

• They prevent the action potential from being passed along.

• They close ion channels in the cell membrane.

How do inhibitory neurotransmitters affect the postsynaptic neuron?

• They depolarize the neuron, causing an action potential.

• They open ion channels to pass the message along.

• They hyperpolarize the neuron, preventing the action potential.

• They increase the likelihood of an action potential.

Which part of the nervous system is known as the control center?

• Peripheral Nervous System (PNS)

• Central Nervous System (CNS)

• Autonomic Nervous System

• Somatic Nervous System

What type of nerve fibers are responsible for voluntary movements?

• Sensory nerve fibers

• Motor nerve fibers

• Somatic motor nerve fibers

• Visceral motor nerve fibers