A synapse is the microscopic gap between neurons where neurotransmitters facilitate the transfer of nerve impulses.

The medulla oblongata functions as the control center for autonomic vital functions including heart rate and respiration.

Myelin acts as an electrical insulator that allows nerve impulses to jump between nodes of Ranvier, significantly speeding up conduction.

A reflex arc begins with a stimulus at a receptor and travels via sensory neurons to the spinal cord (interneurons) and back through motor neurons to an effector.

The occipital lobe is the visual processing center of the mammalian brain.

The Central Nervous System (CNS) consists strictly of the brain and the spinal cord.

Serotonin is a key neurotransmitter that stabilizes mood, feelings of well-being, and happiness.

The spinal cord acts as the main conduit for signals between the brain and the rest of the body.

Dendrites are the branched structures of a neuron designed to receive synaptic inputs from other neurons.

The olfactory nerve (Cranial Nerve I) is the first cranial nerve and is responsible for the sense of smell.

Astrocytes have projections that wrap around capillaries, playing a crucial role in forming and maintaining the blood-brain barrier.

The thalamus processes and relays sensory information to the appropriate areas of the cerebral cortex, acting as the brain's switchboard.

Depolarization occurs when voltage-gated sodium channels open, allowing an influx of positively charged sodium ions into the cell.

Parkinson's disease is characterized by the loss of dopaminergic neurons in the substantia nigra, leading to motor control difficulties.

Cerebrospinal fluid acts as a cushion, providing buoyancy and protection to the central nervous system against physical trauma.

The parasympathetic nervous system promotes energy conservation and restorative functions, commonly referred to as the 'rest and digest' state.

The conus medullaris is the terminal, tapered end of the spinal cord, typically occurring around the L1 or L2 vertebrae.

The hippocampus is part of the limbic system and plays a vital role in memory consolidation and spatial navigation.

Saltatory conduction describes how nerve impulses 'jump' from one node of Ranvier to the next in myelinated axons, significantly increasing conduction speed.