opening of Question 24 0.68 pts Which stabement is true regarding action potenti
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opening of Question 24 0.68 pts Which stabement is true regarding action potential propagstion? ? 'The acion poemaLallarottone tha anon ,.neter graded PO-tuldert neceu kon ment ran. In salutatory nducton, te myer, aganst soaum ion composed of fat, which nadatn across the membrante ? The active transport of sodum and polassun troon sooampoasaan en Oare, aun depolarization of the aon membrane 0.66 pts Question 25 A stimulus that opens gated potassium ion channels, moving the membrane voltage value below the resting potential value, results in which of the following? O repolarization O summation O depolarization O refracton o/n VED (p, 256Explanation / Answer
Hi Answer:
Q.24.Which statement is true regarding action potential propagation
Answer : Option D
Q.25A stimulus that opens gated potassium on channels, moving the membrane voltage value below the resting potential value, results in which of the following
Answer: Option A [Hyperpolarization ] hyper polarization took place when the membrane potential become ore negative at a particular spot on the neuron’s membrane.
Q.16.The main job of the sodium potassium exchange pump is to
Answer: Option A [Put Na+ out of the cell and K+ into the cell]
Explanation: The Na+/K+ pump is very much important for the cells. It maintains acid-base balance in the cell and also maintain the healthy functioning of the kidney. With the help of ATP sodium-potassium pump moves three sodium molecules out side the cell and two potassium ions into the cell. The major aim of this whole movement of ions is to keep the cell at resting state.
Q.17.Which of the following would be found only on the posterior of the spinal cord
Answer: Option B. [Gray horn]
Explanation: It is the projections of the gray matters towards the outer surface of the spinal cord ad known as Gray horn. It is of 3 types: posterior gray horn, lateral gray horn and anterior gray horns.
Q.13. What happens to a nerve once it first responds to a stimulus
Answer: Option A [Allow Na+ into the cells]
Explanation: When ever the nerve get stimulus it the action potential is generated and this opens the ion channels allowing Na+ to move into the cell.
Q.14.What happens in a neuron when it becomes hyperpolarized?
Answer: Option D.[Allow K+ out of the cell]
Explanation: The hyper polarization took place when the membrane potential become ore negative at a particular spot on the neuron’s membrane. During this condition the K+ are efflux means goes out through K+ channels while the negative Cl- ions are influx means come in through Cl- channels.
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