Create an account
a group of severe disorders characterized by disorganized and delusional thinking, disturbed perceptions, and inappropriate emotions and actions
false sensory experiences, such as seeing something in the absence of an external visual stimulus
a progressive disease that destroys brain cells and is identified by muscular tremors, slowing of movement, and partial facial paralysis
drugs that combat depression by affecting the levels or activity of neurotransmitters in the brain
Central nervous system
the portion of the vertebrate nervous system consisting of the brain and spinal cord
Somatic Nervous System
the division of the peripheral nervous system that controls the body's skeletal muscles
Autonomic nervous system
the part of the nervous system of vertebrates that controls involuntary actions of the smooth muscles and heart and glands
Sympathetic Nervous System
the division of the autonomic nervous system that arouses the body, mobilizing its energy in stressful situations
Parasympathetic nervous system
the division of the autonomic nervous system that calms the body, conserving its energy
The oldest part and central core of the brain, beginning where the spinal cord swells as it enters the skull; the brainstem is responsible for automatic survival functions
the "little brain" attached to the rear of the brainstem; it helps coordinate voluntary movement and balance
the middle division of brain responsible for hearing and sight; location where pain is registered; includes temporal lobe, occipital lobe, and most of the parietal lobe
a nerve network in the brainstem that plays an important role in controlling arousal
top of the brain which includes the thalamus, hypothalamus, and cerebral cortex; responsible for emotional regulation, complex thought, memory aspect of personality
the brain's sensory switchboard, located on top of the brainstem; it directs messages to the sensory receiving areas in the cortex and transmits replies to the cerebellum and medulla
a neural structure lying below the thalamus; directs eating, drinking, body temperature; helps govern the endocrine system via the pituitary gland, and is linked to emotion
a system of functionally related neural structures in the brain that are involved in emotional behavior
a neural center located in the limbic system that helps process explicit memories for storage
the intricate fabric of interconnected neural cells that covers the cerebral hemispheres; the body's ultimate control and information-processing center
the large band of neural fibers connecting the two brain hemispheres and carrying messages between them.
the portion of the cerebral cortex lying at the back of the head; includes the visual areas, which receive visual information from the opposite visual field
the portion of the cerebral cortex lying at the top of the head and toward the rear; receives sensory input for touch and body position
a brain area at the front of the parietal lobes that registers and processes body sensations
the portion of the cerebral cortex lying just behind the forehead; involved in speaking and muscle movements and in making plans and judgments
an area of the brain, near the rear of the frontal lobes, that controls voluntary movement
the portion of the cerebral cortex lying roughly above the ears; includes the auditory areas, each of which receives auditory information primarily from the opposite ear
a method of examining body organs by scanning them with X rays and using a computer to construct a series of cross-sectional scans along a single axis
using a computerized radiographic technique to examine the metabolic activity in various tissues (especially in the brain)
a technique that uses magnetic fields and radio waves to produce computer-generated images that distinguish among different types of soft tissue; allows us to see structures within the brain
study of the brain w/ EEG, single-unit recording, brain damage, sleep, epilepsy, happiness
A technique for exploring the cerebral cortex with weak electric current to observe motor responses.
controls language expression-an aread of the frontal, usually in the left hemisphere, that directs the muscle movements involved in speech
the extension of a neuron, ending in branching terminal fibers, through which messages pass to other neurons or to muscles or glands
the junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron
the bushy, branching extensions of a neuron that receive messages and conduct impulses toward the cell body
neurons that carry incoming information from the sense receptors to the central nervous system
neurons that carry outgoing information from the central nervous system to the muscles and glands
A cell, a group of cells, or an organ that produces a secretion for use elsewhere in the body or in a body cavity or for elimination from the body.
Chemical messengers, mostly those manufactured by the endocrine glands, that are produced in one tissue and affect another.
Central nervous system neurons that internally communicate and intervene between the sensory inputs and motor outputs
a layer of fatty tissue segmentally encasing the fibers of many neurons; enables vastly greater transmission speed of neural impulses as the impulse hops from one node to the next
a chronic progressive nervous disorder involving loss of myelin sheath around certain nerve fibers
the potential difference between the two sides of the membrane of a nerve cell when the cell is not conducting an impulse
refers to the fact that the action potential in the axon occurs either full blown or not at all
(neurology) the time after a neuron fires or a muscle fiber contracts during which a stimulus will not evoke a response
Chemical messengers that do not act directly on synapses but modify neuron sensitivity to synpatic stimulation or inhibition.
controls language reception-a brain area involved in language comprehension and expression;usually in the left temporal lobe
a sudden loss of consciousness resulting when the rupture or occlusion of a blood vessel leads to oxygen lack in the brain
the system of glands that produce endocrine secretions that help to control bodily metabolic activity
gland that produces hormones that regulate blood sugar; produces enzymes that break down carbohydrates, proteins, lipids, and nucleic acids; and produces sodium bicarbonate, a base that neutralizes stomach acid
A condition of abnormal use of glucose, usually caused by too little insulin or lack of response to insulin.
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
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