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Gre Psychology: Experimental/natural Science Biology

Subjects : gre, psychology
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Is used as an anaesthetic for children and animals but causes psychosis in adults






2. Midbrain - medulla and the pons






3. States that performance is worst at extremely low or extremely high levels of arousal and optimally at an intermediate level






4. Includes the tectum and tegmentum






5. Colored part of the eye






6. SCN = controls circadian rhythms - located directly above the optic chasm in the anterior portion of the hypothalamus - receives input from the eyes which is why light exposure affects our sleep-wake cycles






7. Adenine - Guanine - Thymine - Cytosine






8. Refers to both the somatosensory cortex and motor cortex (they are a little different but very interrelated)






9. AKA the striate cortex - located at the back of the brain - and contains the visual cortex






10. Are direct antagonists; binds with a receptor but does not activate it - but prevents the natural ligand from binding with the receptor






11. Begins where spinal cord ends - 3 structures: the medulla - the pons - the cerebellum






12. Part of limbic system; protrusion of the bottom of the brain at the posterior end of the hypothalamus - contains some hypothalamic nuclei






13. When a neuron reaches its excitation threshold - the neuron will produce an action potential of FIXED amplitude regardless of the magnitude of the stimulation






14. Junction of the sagittal and coronal sutures of the skull; often used as a reference point for stereotaxic brain surgery






15. Sleepwalking - sleep talking






16. Automatic and rapidly acquired reactions - not attributable to reinforcement or conditioning






17. Having two copies of each chromosomes in most cells (except the gametes) - e.g. most mammals






18. Occurs under drug-induced conditions - including excessive use of marijuana; high body temperature - autonomic instability and muscle rigidity






19. Stimulates bone growth and produces the hormones: somatotropin - prolactin - thyroid-stimulating - adrenocorticotropic (ACTH) - follicle-stimulating - luteinnizing






20. Found in the hypothalamus - function to maintain the water balance in the body






21. Found that developmental changes occurring in puberty make the brain more susceptible to the psychotic effects of NDMA antagonist and therefore also related to the emergence of symptoms of schizophrenia






22. Is characteristic of indirect antagonists






23. The maintenance of water balance in the body






24. Research indicates that the expressing of negative emotions is associated with increased immune function; inhibiting negative emotions with decreasing immune function






25. Is found between the arachnoid mater and Pia mater; this is where CSF cushions (and bathes) the brain - giving it the floating quality (and keeping it moist/circulating)






26. Functions as both a hormone and a neurotransmitter in the brain






27. Contains receptors to detect when the body needs food or fluids; the hunger center; lesions lead to aphagia






28. Part of a glial cell that wraps around the axon of a neuron - providing insulation that facilitates speed of propagation of action potential






29. Controls circadian rhythms - produces melatonin (daylight signals go to the eyes to the hypothalamus to the pineal gland)






30. Hormone secreted during the night by the pineal body; role in circadian and seasonal rhythms






31. 'little brain'






32. Pass the easiest through the blood-brain barrier






33. Motor neurons found in the Somatic (voluntary) and Autonomic (involuntary) Nervous Systems






34. Short bursts of waves 12-14 Hz that occur 2-5 times a minute during stages 1-4 of sleep; most characteristic of sleep Stage II; some believe sleep spindles are involved in keeping one asleep (decline in older people)






35. The slowing and eventual cessation of estrous cycles in groups of female animals that are housed together; caused by a pheromone in the animals urine and first observed in mice






36. Skin senses that register the sensations of pressure - warmth and cold






37. Include tolerance (possible withdrawal) and sensitivity






38. Controls sexual activity; lesions inhibit sexual behavior; stimulation increases aggressive sexual behavior






39. Is found at the base of the brain - underneath the thalamus (**remember hypo-below)






40. Means 'Savory' in Japanese and is a taste receptor found on the tongue; activated by glutamate present in meats - cheese and other protein heavy foods






41. These cells perform a variety of functions but do not transmit information; one type forms the myelin sheath






42. Occurs for body temperature - blood glucose levels - blood concentration - etc -hormones are important






43. An axon of a neuron in one region of the brain whose terminals form synapses with neurons in another region






44. Synchronized EEG activity during its deeper stages






45. A single - unfertilized cell created during conception; the combined egg + sperm






46. Hormones that reduce pain






47. Olfactory Nerve - smell






48. 1. Stage I (non-REM sleep) 2. Stage II (non-REM sleep 3. Stage III (non-REM sleep - slow-wave sleep) 4. Stage IV (non-REM sleep - slow-wave sleep) 5. Rapid Eye Movement Sleep (REM sleep) ~takes about 90 minutes for one full sleep cycle






49. Bunch of dopaminergic neurons starting in the ventral tegmental area and ending in prefrontal cortex






50. Forebrain -band of nerve fibers connecting the two cerebral hemispheres