Nervous System and Neurons (Ch. 3 Lesson 1)
These two structures make up the central nervous system.
What are the brain and spinal cord?
This system consists of glands that produce and secrete hormones.
What is the endocrine system?
like sound, light is this form of energy.
What is electromagnetic energy?
Of the five traditional senses, this one is especially powerful at triggering memories.
What is smell?
This term means awareness of what is happening inside and outside ourselves.
What is consciousness?
Billions of these cells carry messages throughout the nervous system.
What are neurons?
Known as the master gland, this small gland produces human growth hormone.
What is the pituitary gland?
This opening in the eye controls how much light enters.
What is the pupil?
Kinesthesis and the vestibular sense help us do this.
Sleep, meditation, and biofeedback may each produce this kind of consciousness.
What is an altered state of consciousness?
Neurons release these chemical messengers to communicate with other cells.
What are neurotransmitters?
The brain is commonly divided into these three major sections: Forebrain, midbrain, and this _____________.
What is the hindbrain?
This part of the eye changes thickness to focus images at different distances.
What is the lens?
This is the weakest amount of a stimulus that a person can detect.
What is the absolute threshold?
These types of drugs slow down the activity of the nervous system.
What are depressants?
This nervous system includes the nerves outside the brain and spinal cord.
What is the peripheral nervous system?
This term describes the transmission of traits from parents to offspring.
What is heredity?
These retinal photoreceptors allow people to see color.
What are cones?
This process occurs when receptors become less responsive to constant, unchanging stimulation.
What is sensory adaptation?
These types of drugs speed up the activity of the nervous system.
What are stimulants?
Pulling your hand away from a hot surface before consciously deciding to move illustrates this rapid response pathway.
What is a spinal reflex?
Accident studies, electrical stimulation, brain imaging, and animal lesion studies are all used by psychologists for this purpose.
What is studying the brain and determining the functions of its different regions?
A sound wave with greater frequency has more cycles per second and is perceived as having more of this quality.
What is a higher pitch?
According to this pain theory, rubbing an injured area may reduce pain because the nervous system has a limited capacity for sensory messages.
What is gate theory?
This is the final stage and in the sleep cycle and one of the most important. It is when most dreams occur and not getting enough of it can impair learning and memory.
What is REM?