Create an account
Neurons that carry incoming information from teh sensory receptors to the brain and spinal cord
Neurons tha carry outgoing information fromt he brain and spinal cord to the muscles and galnds
Neurons within the brain and spinal cord that communicate internally and inetervene between the sensory inpyuts and motor outputs
The busy, brabnching extensions of a neuron that recieve messages and conduct impulses toward the cell body
The extension of a neuron, ending in branching terminal fibers thorugh which emssages pass to other neurons tr to muslces or glands
A layer of fatty tissue segmentally encasing the fibers of many neurons enables vastly greater tranjsmission speed of neural impulses as the impuls hops from one node to the next
The junction between the axon tip of the sending neuron and the dendrite or cell body of the recieving neuron. TH etiny gap at this junction is called the synaptic gap or synaptic cleft.
Chemical messengers that cross the synaptic gaps between tneurons. When released by teh sending neuron, neurotransmitters travel across the synapse and bind to receptor sites on the reicieving neuron, thereby influencing whether that neuron will generate a neural impulse
The body's speedy, electrochemical communication netwokr, consisting of all hte nerve cells of the peripheral and central nervous systems
Bundled axons that form nerual cables connectin gthe central nervous syutem with muslces, glands, and sense organs
Somatic nervous system
The division of the peripheral nervous system that controls the body's skeletal muscles
Autonomic nervous sytem
The part of the peripheral nervous system that controls the gland and the muscles of the internal organs. Its sympathetic division arouses; its parasympathetic division calms
Sympathetic nervous system
The division of the authonomic nervous system that arouses the body, mobilizing its energy in stressful situations
Parasympathetic nervous system
Th edivision of the authonomic nervous system tha calms the body, conserving its energy
The body's slow chemical communcaition system, a set of glands that secret hormones into the bloodstream
Chemical messengers that are manufactured by the endocrine glands, travle through the bloodstream, and affect other tissues
A pair of endocrine glands that sit just above the kidneys and secret hormones that help arouse the body in times of stress
The endocrine system's most influential gland. Under the influence of the hypothalamus, the pituitary regulates the growth and controls other endocrine glands
Tissue destruction. A brain lesion is a naturlal or experimentall caused destruction of brain tissue
An amplified recording of the waves of electrical activity that sweep across the brain's surface. These waves are measured by electrodes placed on the scalp.
PET (position emission tomography) scan
A visual display of brain activity that detects wehre a radioactive form glucose goes while the brain performs a given task
MRI (magnetic resonance imaging)
A technique that uses magnetic fields and radio waves to produce computer generated images of soft tissue. MRI scans show brain anatomy.
fMRI (functional MRI)
A technique for revealing blooflow and, therefore, brain activity by comparing uccessive MRI scans. fMRI scans show brain function
THe oldest part and central core of the brain, beginning where the spinal cord swells as it enters the skull; the brain stem is responsible for authomatic survival functions
A nerve network in the brainstem that plays an important role in controlling arousal
The brain's sensory switchoard, located on top of the brainstem; it directs messages to the sensory recieving areas in the cortex and transmits replies to the cerebellum and medulla
The "little brain" at the rear of the brainstem; functions include processing sensory imput and coordinating movement output and balance
Neural system (including the hippocampus, amygdala, and hypothalamus) located below the cerebral hemispheres; associated with emotions and drives
A neural structure lying below the thalamus; it directs several maintance activies (eating, drinking, body temperature) helps govern the endocrine system bia the pitutiaaary gland and is linked to emotion and reward.
The intricate fabirc of interconnected neural cells covering the cerebral hemispheres; the body's ultimate control and information-processing center
Portion of the cerebral cortex lying just behind the forehead; involved in speaking and muscle movements and in making plans and judgements
Portion of teh cerebral cortex lying at teh top of the head and toward the rear; recieves sensory imput for touch and body position
Portion of the cerebral cortex lying at the back of the head; includes areas that recieve information from the visual fields
Portion of the cerebral cortex lying roughly above the ears; includes the auditory areas, each receiving information primarily from the opposite ear
Area at the front of the parietal lobes that registers and processes body touch anbd movement sensation
Areas of the cerebral cortex that are not involved in primary motor or sensory functions; rather, they are involved in higher mental functions such as learning, remembering, thinking, and speaking
The brain's abililty to change. especially durring the childhood by reorganizing after damange by building new pathways based on experience
The large band of neural fibers connecting the two brain hemispheres and carrying messages between them
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together