IU PHYSIOLOGY EXAM 2 WITH
CORRECT QUESTIONS AND
QUARANTEED ANSWERS.
What do electrical synapses do? - CORRECT ANSWERS.✔️✔️-Gap Junctions
-allow direct transmission of graded or action potentials
-synchronization
What do voltage-gated calcium ion channels do? - CORRECT ANSWERS.✔️✔️High [Ca} outside and flows
in
-depolarizes
What do synaptic vesicles do and where are they made? - CORRECT ANSWERS.✔️✔️-store
neurotransmitters
-Made in cell body by protein synthesis
What are SNAREs? - CORRECT ANSWERS.✔️✔-️ Proteins located on axon terminal
-Increase efficiency of neurotransmitter release
What are the phases of the SNAREs - CORRECT ANSWERS.✔️✔T️ ethering→Docking→Priming
What is the function of a neurotransmitter? - CORRECT ANSWERS.✔️✔-️ Messenger
-Cross synapse to bind to receptor
What triggers the release of a neurotransmitter? - CORRECT ANSWERS.✔️✔️When Calcium comes into
terminal
What is a post-synaptic receptor? - CORRECT ANSWERS.✔️✔️Ligand-gated channels
, What is the result of opening ion channels on the post-synaptic membrane - CORRECT
ANSWERS.✔️✔️Membrane Potentials
What are the steps for a chemical synapse to remove NT from synaptic cleft? - CORRECT
ANSWERS.✔️✔️1. Reuptake by pre-synaptic neuron (usually secondary AT)
2. Enzymatic degradation (acetylcholene & histomene)
3. Removal by support [glial] cells (Create surrounding cap around Nerutoransmitter)
4. Diffusion out of the synapse
What is divergence in the integration of synaptic contacts? - CORRECT ANSWERS.✔️✔️-Pre-synaptic
neuron is having a larger impact
-Intensity of AP is NOT SPLIT
-Does NOT increase AP intensity
What is convergence in the integration of synaptic contacts? - CORRECT ANSWERS.✔️✔-️ Multiple pre-
synaptic neurons trying to influence a SINGLE post-synaptic neuron
What is spatial summation? - CORRECT ANSWERS.✔️✔️-Adding graded potentials together(A+B)
-Multiple pre-synaptic neurons converging on a postsynaptic neuron
What is temporal summation? - CORRECT ANSWERS.✔️✔️One pre-synaptic neurons transmit multiple
graded potentials
What are sensory neurons? - CORRECT ANSWERS.✔️✔️Afferent (Towards CNS)
What are motor neurons? - CORRECT ANSWERS.✔️✔️Efferent (away from CNS)
What are interneurons functions? - CORRECT ANSWERS.✔️✔️Make decisions
CORRECT QUESTIONS AND
QUARANTEED ANSWERS.
What do electrical synapses do? - CORRECT ANSWERS.✔️✔️-Gap Junctions
-allow direct transmission of graded or action potentials
-synchronization
What do voltage-gated calcium ion channels do? - CORRECT ANSWERS.✔️✔️High [Ca} outside and flows
in
-depolarizes
What do synaptic vesicles do and where are they made? - CORRECT ANSWERS.✔️✔️-store
neurotransmitters
-Made in cell body by protein synthesis
What are SNAREs? - CORRECT ANSWERS.✔️✔-️ Proteins located on axon terminal
-Increase efficiency of neurotransmitter release
What are the phases of the SNAREs - CORRECT ANSWERS.✔️✔T️ ethering→Docking→Priming
What is the function of a neurotransmitter? - CORRECT ANSWERS.✔️✔-️ Messenger
-Cross synapse to bind to receptor
What triggers the release of a neurotransmitter? - CORRECT ANSWERS.✔️✔️When Calcium comes into
terminal
What is a post-synaptic receptor? - CORRECT ANSWERS.✔️✔️Ligand-gated channels
, What is the result of opening ion channels on the post-synaptic membrane - CORRECT
ANSWERS.✔️✔️Membrane Potentials
What are the steps for a chemical synapse to remove NT from synaptic cleft? - CORRECT
ANSWERS.✔️✔️1. Reuptake by pre-synaptic neuron (usually secondary AT)
2. Enzymatic degradation (acetylcholene & histomene)
3. Removal by support [glial] cells (Create surrounding cap around Nerutoransmitter)
4. Diffusion out of the synapse
What is divergence in the integration of synaptic contacts? - CORRECT ANSWERS.✔️✔️-Pre-synaptic
neuron is having a larger impact
-Intensity of AP is NOT SPLIT
-Does NOT increase AP intensity
What is convergence in the integration of synaptic contacts? - CORRECT ANSWERS.✔️✔-️ Multiple pre-
synaptic neurons trying to influence a SINGLE post-synaptic neuron
What is spatial summation? - CORRECT ANSWERS.✔️✔️-Adding graded potentials together(A+B)
-Multiple pre-synaptic neurons converging on a postsynaptic neuron
What is temporal summation? - CORRECT ANSWERS.✔️✔️One pre-synaptic neurons transmit multiple
graded potentials
What are sensory neurons? - CORRECT ANSWERS.✔️✔️Afferent (Towards CNS)
What are motor neurons? - CORRECT ANSWERS.✔️✔️Efferent (away from CNS)
What are interneurons functions? - CORRECT ANSWERS.✔️✔️Make decisions
