13 Jun Action potentials normally travel along an axon in either direction depending
Question
5.Action potentials normally travel along an axon in either direction depending on the needs of the animal. (Points : 1)
True
False
Question 6.6.The thalamus relays information to the body. (Points : 1)
True
False
Question 7.7.The resting membrane allows much more potassium than sodium to diffuse across so that the concentration of potassium inside of the cell is greater than outside of the cell. (Points : 1)
True
False
Question 8.8.A sponge is a bilateral animal and so has a central nervous system. (Points : 1)
True
False
Question 9.9.Scientists have determined that exposure to aluminum causes alzheimer’s disease. The treatment for alzheimer’s is to avoid aluminum which is found in cook,ware, canteens and some deodorants. (Points : 1)
True
False
10.Areas of the brain in the cerebrum play major roles in memory, learning speech and emotions. (Points : 1)
True
False
Question 11.11.A synapse is a site of communication between two different cells. (Points : 1)
True
False
Question 12.12.The neurons in your body can only receive information from one other neuron cell at a time. (Points : 1)
True
False
Question 13.13.Once the threshold potential is reached an action potential is inevitable. (Points : 1)
True
False
Question 14.14.Nicotine binds and activates acetycholine receptors, caffeine counters inhibitory signals and amphetamines and cocaine increase the release and availability of norepinephrine. (Points : 1)
True
False
Question 15.15.Neurotransmitter molecules bind to receptors in the receiving cell’s plasma membrane. (Points : 1)
True
False
Question 16.16.When you do not have 20/20 vision and wear contact lenses or eye glasses, they work to improve your sight because they bend the light rays to correct your vision. (Points : 1)
True
False
17.If an animal is diurnal (active during the day) it probably has more cones in its eyes to distinguish more colors because its prey may have evolved to be camouflaged in the daylight. (Points : 1)
True
False
Question 18.18.The auditory nerve in your ear functions in a similar way to the optic nerve in your eye. (Points : 1)
True
False
Question 19.19.Compound eyes are accurate motion and color detectors and have multiple light foucsing lenses. (Points : 1)
True
False
Question 20.20.My aunt lived to be 106 years old. Once she was about 95 she started to complain the the food in the “home” just did not have much taste or flavor. There is a physical reason for this to occur in the elderly population. (Points : 1)
True
False
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