Epsp - Study guides, Revision notes & Summaries

What does the change in membrane voltage depend on? - ️️depends on the ion channels opened, not the neurotransmitter some neurotransmitters can have both excitatory and inhibitory effects; depends on the ligand gated channels in postsynaptic cell and the ion channels determining EPSP or IPSP When are large axons used? - ️️rapid responses- cockroach startle/escape response; sensory filiform hair receptors on back synapse to giant axon that goes to thoracic region and then synapses ...

A postsynaptic potential is excitatory (EPSP) if the ion involved has a reversal potential (Eion) that is more depolarized than the resting membrane potential (Vm or Vrest), even if that Eion is hyperpolarized to the threshold for firing an action potential. - False why?>> For a postsynaptic potential to be excitatory, the reversal potential for the ion involved must be depolarized to the threshold for firing an action potential. An EPSP increases the likelihood of firing. If Eion is...

Secretion definition - the process of converting an electrical signal (presynaptic neuron) to a chemical signal (synapse) and then back to an electrical signal (post synaptic neuron) Synaptic Activity - allows neurons to communicate with one another What happens in Secretion? - the release of neurotransmitters Neurotransmitters - derived from amino acids (dopamine or norepinephrine) - derived from gas (acetylcholine) - carries chemical signal/messages Vesicle - stores neurotransmitters - tra...

Psych 115 Midterm 1 UCLA Exam Questions and Answers 100% Pass What are the three layers of protective layer called? - Answer- Meninges - Dura Mater (thick outer layer) - Arachnoid (Spongy middle layer) - Pia Mater (thin inner layer) What is the organ that constantly manufactures the CSF? - Answer- choroid plexus, which resides in hollow tubes and cavities called ventricles Where does the action potential originate? - Answer- Integration zone (or active zone) What are the three types of ...

In the duodenum, enteropeptidase ________________. correct answers cleaves trypsinogen to form trypsin Which of the three proteins in the ubiquination pathway is the most responsible for recognizing the ubiquinated target protein? correct answers E3 What is the regulatory mechanism by which arginine stimulates flux through the urea cycle? correct answers Arginine stimulates the production of the allosteric activator N-acetylglutamate A person who has alkaptonuria is easily diagnosed fro...

Which statement(s) describe saltatory conduction? - ANSWER Results from action of specialized cells known as Schwann cells. Describes how sodium and potassium ions only flow across the membrane at Nodes of Ranvier. Defined as the "jumping" of an electrical signal down a myelinated neuron. depolarizes the postsynaptic membrane - ANSWER EPSP

Medsci 206 - Module A (Synapses and plasticity, CNS cells, development) Questions And Answers A+ Graded 2024/2025 neuron structure - ANS-polarised cells axon - presynaptic - site of outgoing info, contact other neurons dendrites - postsynaptic - side of synapses (incoming info) synapses - ANS-specialised site of neuron-neuron contact rapid communication form neuronal circuits transform electrical info to chemical then back to electrical information processing units of the ...

NSC Chapter 5 Test with Complete Solutions transporters - Answer-special proteins embedded in the vesicle membrane that concentrate neurotransmitters inside the vesicle once the amino acid and amine neurotransmitters are synthesized in the cytosol and then taken up by the synaptic vesicles. voltage-gated calcium channels - Answer-following the depolarization of the terminal membrane, these channel proteins open and let in Ca++ ions; resulting elevation in the ions is the signal that causes n...

SPLH 620 Quiz #1 questions and answers with complete top solutions Dorsal (Superior) top of brain Ventral (Inferior) bottom of brain Anterior front of brain Posterior back of brain GABA primary inhibitory CNS neurotransmitter Axon Hillock location of action potential initiation Spatial Summation integration of synaptic input from dendrites and cell body areas Node of Ranvier area of axon between myelinated sections with many ion channels ...

c. a limited partner d. none of these - ANSWER C QN=1 (20283) Which of the following does maximizing shareholder wealth not usually account for? a. Risk. b. Government regulation. c. The timing of cash flows. d. Amount of cash flows. - ANSWER B QN=2 (20262) Financial markets in which equity and debt instruments with maturities greater than one year are traded are called a. money markets. b. capital markets. c. stock markets. d. none of these. - ANSWER B QN=3 (20269) Which of the followin...