Abbreviations/Drugs
What would NS stand for in this chapter?
Nervous System
Another name for a nerve cell
Neuron
The largest part of the brain
Cerebrum
The neurons that receive information from your senses and send the impulses to the brain
Sensory Neurons
Receptor cells that respond to bright light and allows you to see color
Cones
What does CNS stand for in this chapter?
Central Nervous System
The branches of the neuron that receive messages from other neurons
Dendrite
The part of the brain behind and under the cerebrum that has to do with voluntary movement and balance
Cerebellum
Nerve cells that send impulses from the brain or spinal cord to the muscles
Motor neurons
Receptor cells that respond in dim light and help you detect shapes and things in "gray scale"
Rods
What does PNS stand for in this chapter?
Peripheral Nervous System
The part of the neuron that sends (transmits) messages away from the cell body
axon
The cerebrum is divided into 2 _______________
Hemispheres
Interneurons
The fluid filled structure in your inner ear that contains the nerve endings (receptor cells) that allow you to receive sound vibrations.
Cochlea
A type of drug that slows down activities of the CNS and affects reasoning, memory and concentration
Depressant
The small space between nerve cells where the messages pass from one neuron to another
Synapse
The part of the brain that connects to the spinal cord
Brain Stem
The division of the PNS that consists of cranial and spinal nerves that controls VOLUNTARY movements
Somatic System
The sensory receptors on your tongue
Taste buds
A type of drug that speeds up the activities of the CNS such as increasing the heat rate and causing restlessness.
Stimulant
The protective covering of the axon that controls the speed of the messages
Myelin sheath
cortex
The division of the nervous system that controls automatic responses such as heart rate, breathing, etc.
Automatic System
The sensory cells in your nose that are stimulated by gas molecules
Olfactory Cells