04 - PD2 - Nervous system quiz

The _______________ contains the brain and the spinal cord.

• peripheral nervous system

• autonomic nervous system

• central nervous system

• limbic system

_______________ are structures in a person’s hand that feel heat and pain.

• Nerves

• Vessels

• Sensory receptors

• Reflexes

__________ neurons send messages from the CNS to move muscles, while ____________ neurons send messages to the CNS about what you see, smell, touch, taste, or hear.

• myelinated; unmyelinated

• Quick; slow

• Sensory; Motor

• Motor; sensory

The ____________ are short branches of the neuron that receive messages from other neurons and send these messages to the body.

• dendrites

• cell body

• axons

• axon hillock

The _____________ is a single long extension that transmit messages (nerve impulses or action potentials) to other neurons or to muscles.

• dendrite

• cell body

• axon

• axon hillock

When a neuron gets excited, two molecules, ________ and ___________, move in and out of the neuron.

• calcium; phosphate

• oxygen; carbon dioxide

• sodium; potassium

• adrenaline; acetylcholine

The space between the axon of one neuron and the dendrite of another is called a ______________.

• blood-brain barrier

• synapse

• ventricle

• neurotransmitter

__________ nerves (like the Trigeminal, Facial, Glossopharyngeal, or Vagus nerves) carry nerve impulses in both directions: from and to the brain.

• Sensory

• Motor

• Afferent

• Mixed

_________________ travel between the spinal cord and the rest of the body. There are 31 pairs of them.

• Cranial nerves

• Spinal nerves

• Sensory receptors

• Central nerves

______________ is the dark-colored tissue in the brain or spinal cord where decision-making occurs.

• Neuron

• Gray matter

• White matter

• Axon