Nervous System Overview

Flashcards covering key concepts related to the structure and function of the nervous system.

What is the primary function of the nervous system?

To generate electrical signals that facilitate communication and responses within the body.

What are the two major divisions of the nervous system?

Central Nervous System (CNS) and Peripheral Nervous System (PNS).

What is the primary function of the nervous system?

To generate electrical signals that facilitate communication and responses within the body.

What are the two major divisions of the nervous system?

Central Nervous System (CNS) and Peripheral Nervous System (PNS).

What components make up the Central Nervous System (CNS)?

The brain and spinal cord.

What is the role of afferent nerves in the nervous system?

They bring sensory information to the central nervous system.

What is the role of efferent nerves in the nervous system?

They carry motor commands from the central nervous system to the body.

What are the main supporting cells in the nervous system?

Neuroglia including astrocytes, microglial cells, oligodendrocytes, and Schwann cells.

What is the main role of the cerebellum?

To coordinate fine motor movements and timing of muscle contractions.

What is the function of the thalamus?

To act as a relay center for sensory information going to the cerebral cortex.

How do cranial nerves differ from spinal nerves?

Cranial nerves primarily innervate the head and neck and emerge from the brainstem, whereas spinal nerves arise from the spinal cord.

What fluid protects and nourishes the brain?

Cerebrospinal fluid (CSF).

What is the role of the hypothalamus?

To regulate homeostasis, including temperature and hormone secretion.

Which part of the nervous system processes reflex actions?

The spinal cord can process reflex actions autonomously.

What is the organization of gray and white matter in the spinal cord?

Gray matter is located in the center, while white matter surrounds it.