This system facilitates communication between body parts and coordinates responses to stimuli.
What is the nervous system?
The natural process that regulates the sleep-wake cycle and other physiological processes.
What is the circadian rhythm?
Substances that slow down the central nervous system, often resulting in relaxation, sedation, or sleepiness.
What are depressants?
This part of a neuron receives signals from other neurons or sensory receptors.
What is a dendrite?
This lobe of the brain is associated with higher-level cognitive functions such as reasoning, planning, and problem-solving.
What is the frontal lobe?
These glands and hormones regulate physiological processes without direct neural involvement.
What is the endocrine system?
This term refers to the overall state of reduced consciousness and decreased responsiveness during which the body rests and restores itself.
What is sleep?
Drugs that increase alertness, attention, and energy, often leading to enhanced cognitive and physical performance.
What are stimulants?
The long, slender projection of a neuron that conducts electrical impulses away from the cell body.
What is an axon?
The lobe primarily responsible for visual processing.
What is the occipital lobe?
The part of the nervous system responsible for connecting the central nervous system to the rest of the body.
What is the peripheral nervous system?
This term refers to a sequence of events experienced during sleep that often unfolds like a story.
What is a dream?
A widely consumed depressant that affects the central nervous system, leading to relaxation, impaired coordination, and decreased inhibition.
What is alcohol?
A fatty substance that surrounds and insulates the axon of some neurons, speeding up the transmission of electrical signals.
What is the myelin sheath?
This lobe of the brain is involved in processing sensory information and spatial awareness.
What is the parietal lobe?
It comprises the brain and spinal cord, controlling most functions of the body and mind.
What is the central nervous system?
A stage of sleep characterized by rapid eye movement, dreaming, and physiological arousal.
What is R.E.M. sleep?
Drugs that alter perception, thoughts, and feelings, often leading to sensory distortions and hallucinations.
What are hallucinogens?
The cell body of a neuron, which contains the nucleus and other organelles.
What is the soma?
The lobe responsible for processing auditory information and memory.
What is the temporal lobe?
Activated in times of stress or danger, this system prepares the body for "fight or flight" responses.
What is the sympathetic nervous system?
This stage of sleep is associated with alertness and active mental engagement when the brain exhibits beta wave activity.
What is waking beta?
The physiological and psychological symptoms experienced when someone abruptly stops or reduces their intake of a substance after prolonged use.
What is withdrawal?
The central organelle of a neuron that contains genetic material and controls cellular functions.
What is the nucleus?
The outer layer of the brain responsible for higher-level brain functions such as thinking, perceiving, and planning.
What is the cerebral cortex?