Dentistry Nervous System Organization Quiz

Definition of Ganglion

• A ganglion is a collection of nerve cell bodies located outside the central nervous system.
• They serve as relay points in the peripheral nervous system, facilitating communication between different parts of the body.

Pairs of Spinal Nerves

• There are 31 pairs of spinal nerves in the human body.
• These nerves are categorized into cervical, thoracic, lumbar, sacral, and coccygeal regions, contributing to the peripheral nervous system.

Nerve Supply to Organs

• The vagus nerve supplies respiratory and digestive organs.
• It plays a key role in autonomic control, impacting functions such as heart rate and digestion.

Dorsal Root Ganglia

• Dorsal root ganglia are carried along the dorsal roots of spinal nerves.
• They contain the cell bodies of sensory neurons, contributing to sensory information processing.

Definition of the Brain

• The brain is a complex organ within the central nervous system responsible for processing sensory information, controlling motor functions, and coordinating cognitive activities.
• It is the central hub for thoughts, emotions, memory, and overall bodily regulation.