u3v2 Flashcards
pituitary gland
the endocrine system’s most influential gland. Under the influence of the hypothalamus, the pituitary regulates growth and controls other endocrine glands
occipital lobe
the portion of the cerebral cortex lying at the back of the head, includes areas that receive information from the visual fields
somatosensory cortex
an area at the front of the parietal lobes, registers and processes body touch and movement sensations
lesion
Scientists can also selectively lesion (destroy) tiny clusters of normal or defective brain cells, leaving the surrounding tissue unharmed
temporal lobe
the portion of the cerebral cortex lying roughly above the ears, includes the auditory areas, each receiving information primarily from the opposite ear
medulla
Base of the brainstem, controls heartbeat and breathing
corupus callosum
the large band of neural fibers connecting the two brain hemispheres and carrying messages between them
parietal lobes
the portion of the cerebral cortex lying at the top of the head and toward the rear, receives sensory input for touch andbody position
CT (computed tomography) scan
a series of X-ray photographs taken from different angles and combined by computer into a composite representation of a slice of the brain’s structure, AKA CAT SCAN
MRI (magnetic resonance imaging)
a technique that uses magnetic fields and radio waves to produce computer-generated images of soft tissue, these display brain anatomy
(PET) positron emission tomography scan
a visual display of brain activity that detects where a radioactive form of glucose goes while the brain performs a given task, rather like weather radar showing rain activity, PET-scan “hot spots” show the most active brain areas as the person does mathematical calculations, looks at images of faces, or daydreams
MEG (madnetoencephalography)
a brain imaging technique
that measures magnetic fields from the brain’s natural electrical activity
frontal lobes
the portion of the cerebral cortex lying just behind the forehead, involved in speaking and muscle movements and in making plans and judgments
electrocephalogram (EEG)
an amplified recording of the waves of electrical activity sweeping across the brain’s surface, These waves are measured by electrodes placed on the scalp
adrenal glands
a pair of endocrine glands that sit just above the kidneys and secrete hormones (epinephrine and norepinephrine) that help arouse the body in times of stress (FOF)