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| Question | Answer |
|---|---|
| What are the two cell types in the nervous system? | Neurons and neuroglia |
| What are the two main divisions of the nervous system? | CNS and PNS |
| What structures make up the CNS? | Brain and spinal cord |
| What structures make up the PNS? | Cranial nerves and spinal nerves |
| What does the PNS do? | Connects the CNS to other parts of the body |
| What insulates the neuronal axon? | Myelin sheath |
| What is white matter? | Groups of myelinated axons in the CNS |
| What is gray matter? | Groups of unmyelinated axons in the CNS |
| What is a synapse? | Site where a neuron transmits a nerve impulse to another neuron |
| What is the synaptic cleft? | Small space between the presynaptic and postsynaptic neurons |
| What does the presynaptic neuron release? | Neurotransmitters |
| What do neurotransmitters bind to? | Receptors on the postsynaptic neuron |
| Name three neurotransmitters. | Acetylcholine, dopamine, and serotonin |
| What are the meninges? | Three protective membranes surrounding the brain and spinal cord |
| What are the three layers of the meninges? | Dura mater, arachnoid mater, and pia mater |
| What is meningitis? | Inflammation of the meninges, usually caused by infection |
| What does the corpus callosum do? | Connects the two cerebral hemispheres |
| Where is the cerebellum located? | Inferior to the occipital lobes and dorsal to the pons and medulla oblongata |
| What does the cerebellum do? | Coordinates skeletal muscle activity and maintains posture |
| What is the midbrain involved in? | Vision, hearing, and motor control |
| What does the pons do? | Connects parts of the brain and regulates sleep and breathing |
| What does the medulla oblongata control? | Heart rate, blood pressure, and breathing |