BIOS 251 EXAM 3 REVIEW QUESTIONS AND
DETAILED ANSWERS
◉ axodendritic synapse. Answer: between axon terminal of one
neuron and dendrite of another
◉ presynaptic. Answer: neuron that conducts impulse towards
synapse (sends)
◉ postsynaptic. Answer: neuron that transmits impulse away from
synapse (receives)
◉ excitatory. Answer: synpases where neurotransmitter binding
increases postysynaptic neuron's ability to generate AP
depolarizes post synaptic membrane & approaches threshold
◉ inhibitory. Answer: synapses where neurotransmitter binding
reduces postsynaptic neuron's ability to generate AP
hyperpolarizes post synaptic membrane & moves away from
threshold
, ◉ receptor. Answer: neurotransmitter function depends on its...
◉ secondary vesicles. Answer: includes: telecephalon, dicephalon,
mesencephalon, met/myelencephalon
◉ fore, mid, hind brain. Answer: three primary divisions of the brain
◉ telecephalon. Answer: Part of forebrain that has cerebrum
◉ diencephalon. Answer: part of forebrain that has hypothalamus
and thalamus
◉ mesencephalon. Answer: midbrain
◉ met/myelencephalon. Answer: part of hindbrain containing brain
stem
◉ CSF (cerebrospinal fluid). Answer: a clear fluid (similar to plasma)
found in the brain and spinal cord that is lined with ependymal cells
◉ lateral ventricles (2). Answer: Ventricles located in each cerebral
hemisphere.
DETAILED ANSWERS
◉ axodendritic synapse. Answer: between axon terminal of one
neuron and dendrite of another
◉ presynaptic. Answer: neuron that conducts impulse towards
synapse (sends)
◉ postsynaptic. Answer: neuron that transmits impulse away from
synapse (receives)
◉ excitatory. Answer: synpases where neurotransmitter binding
increases postysynaptic neuron's ability to generate AP
depolarizes post synaptic membrane & approaches threshold
◉ inhibitory. Answer: synapses where neurotransmitter binding
reduces postsynaptic neuron's ability to generate AP
hyperpolarizes post synaptic membrane & moves away from
threshold
, ◉ receptor. Answer: neurotransmitter function depends on its...
◉ secondary vesicles. Answer: includes: telecephalon, dicephalon,
mesencephalon, met/myelencephalon
◉ fore, mid, hind brain. Answer: three primary divisions of the brain
◉ telecephalon. Answer: Part of forebrain that has cerebrum
◉ diencephalon. Answer: part of forebrain that has hypothalamus
and thalamus
◉ mesencephalon. Answer: midbrain
◉ met/myelencephalon. Answer: part of hindbrain containing brain
stem
◉ CSF (cerebrospinal fluid). Answer: a clear fluid (similar to plasma)
found in the brain and spinal cord that is lined with ependymal cells
◉ lateral ventricles (2). Answer: Ventricles located in each cerebral
hemisphere.
