Human Nervous System Flashcards

Flashcards about the human nervous system, brain, and spinal cord.

Nervous System

The system made by a group of specific organs that allows us to react to stimulus and changes in the environment.

Central Nervous System

Brain and Spinal cord.

Peripheral Nervous System

Sensory and Motor

Autonomic Nervous System

Sympathetic and Parasympathetic

Neuron

The basic cell of the nervous system.

Brain

The largest and uppermost part of the central nervous system that controls and coordinates all parts of the body.

Meninges

The three layers of membrane covering the brain.

Three layers of meninges

Dura matter, pia matter, and arachnoid.

Function of Cerebrospinal Fluid (CSF)

Protection and nutrition to the brain.

Cerebrum

The largest part of the brain, responsible for coordinating and controlling various activities of the body.

Functions of Cerebrum

Controls speech, memory, hearing, consciousness, thought, and stimulus.

Cerebellum

The second largest part of the brain, responsible for coordinating timing of muscular movement and maintaining equilibrium.

Functions of Cerebellum

Controls muscular movement and maintain equilibrium.

Medulla Oblongata

Located on the lower part of the brain, it controls involuntary actions.

Functions of Medulla Oblongata

Regulates respiration and controls vomiting, coughing, sneezing, and swallowing.

Spinal Cord

A long, jelly-like structure that passes from the base of the medulla oblongata to the second lumbar vertebrae; communicates between body and brain.

Nerve fibers

Act as a messenger to brain or spinal cord

Afferent or Sensory Nerve

Transmits the nerve impulse from receptor to brain or spinal cord.

Efferent or Motor Nerve

Sends the message or nerve impulse from brain or spinal cord to different parts of the body.

Reflex Action

A sudden and involuntary response to the stimulus shown by our body when touched to any object.