| A | B |
|---|
| ganglia | cell bodies of neurons in the PNS |
| neuroglia | support cells of the PNS |
| microglia | remove cell debris, waste products and pathogens |
| microglia | small type of neuroglia |
| oligodendrocyte | forms the myelin sheath |
| myelin sheath | insulator over the axon- increases the speed of action potential |
| nodes of Ranvier | gaps over the neurons |
| myelinated | having myelin sheath, increases rate of action potential |
| astrocyte | large type of neuroglia, keep the blood brain barrier |
| blood-brain barrier | protects the brain from pathogens, but also hinders in the administration of chemotherapy for brain cancer |
| ependyma cells | make cerebrospinal fluid and helps to circulate it |
| cerebrospinal fluid | filles the spinal cord and ventricles of brain |
| cerebrospinal fluid | protects, cushions the brain and spinal cord |
| cerebrospinal fluid | colorless fluid, if red- there is an infection in brain or spinal cord. |
| interneuron | neuron that connects motor and sensory neuron |
| interneuron | neuron found in the brain and spinal cord, |
| interneuron | neuron involved in memory ,planning and learning |
| visceral neuron | type of motor neuron that innervates smooth muscle, cardiac muscle and adipose tissue |
| somatic motor neuron | type of motor neuron that innervates skeletal muscle |
| motor neuron | also called efferent neuron |
| motor neuron | carry messages from CNS to tissues and organs |
| proprioceptor | monitors position and movement of skeletal muscles |
| exteroceptor | external senses of touch, temperature and pressure |
| interoceptor | provide internal senses of taste, deep pressure and pain |
| sensory receptor | receive stimuli from environment |
| multipolar neuron | has many dendrite and one axon |
| unipolar neuron | h |
