The Nervous System

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5 Questions

Which part of the Central Nervous System is responsible for controlling basic functions such as breathing and heart rate?

Medulla Oblangata

Which part of the nervous system is responsible for transmitting signals between the brain and the rest of the body?

Peripheral Nervous System

How many pairs of spinal nerves are there in the Spinal Cord?

31

Which part of the spinal nerves contains unipolar neurons?

Dorsal Root Ganglion

What type of neurons are found in the motor fibers of the spinal nerves?

Multipolar Neurons

Study Notes

Overview of the Nervous System and Spinal Nerves

  • The Nervous system is composed of the Central Nervous System (CNS) and Peripheral Nervous System (PNS).
  • The CNS consists of the Spinal Cord and the Brain, including the cerebral hemisphere, diencephalon, mesencephalon, pons, medulla oblongata, and spinal cord.
  • The Spinal Cord is divided into 31 pairs of Spinal Nerves, categorized as Cervical, Thoracic, Lumbar, Sacral, and Coccygeal.
  • Each Spinal Nerve has both an Anterior and a Posterior route.
  • The Posterior route contains Motor Fibers, while the Anterior route contains Sensory Fibers.
  • The Sensory Fibers in the Spinal Nerve's Anterior route are found in the Dorsal Root Ganglion, which contains Unipolar Neurons.
  • The Motor Fibers in the Spinal Nerve's Posterior route are composed of Multipolar Neurons.
  • The Cervical Spinal Nerves are the first 8 pairs, labeled as C1-C8.
  • The Thoracic Spinal Nerves are the next 12 pairs, labeled as T1-T12.
  • The Lumbar Spinal Nerves are the next 5 pairs, labeled as L1-L5.
  • The Sacral Spinal Nerves are the next 5 pairs, labeled as S1-S5.
  • The Coccygeal Spinal Nerve is the last pair, labeled as 1.

Test your knowledge of the Nervous System with this quiz! Explore the divisions of the Central Nervous System (CNS) and the Peripheral Nervous System (PNS). Learn about the components of the CNS, including the spinal cord, brain, and cranial nerves. Discover the different parts of the brain, such as the cerebral hemisphere, diencephalon, mesencephalon, pons, and medulla. Challenge yourself and expand your understanding of this fascinating system.

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