Upstroke of action potential would lead to________________?
Correct answer: D. Cell interior becomes less negative
- A. Net current in an outward direction
- B. Cell interior becomes more negative
- C. None of the above
- D. Cell interior becomes less negative
Explanation
The upstroke results mainly from rapid Na+ entry, making the cell interior progressively less negative and then positive. This is depolarization, not an outward net current.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Neurophysiology
64 free Neurophysiology MCQs from Physiology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physiology questions like this
Physiology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Neurophysiology questions
Small packets of acetylcholine released randomly from the nerve cell membrane at rest Produces_______________?
Which is caused by acetylcholine through nicotinic receptors_____________?
The absolute refractory period of an action potential is due to _______________?
Increase in threshold level on applying subthreshold, slowly rising stimulus is known as ___________?
The number of muscle fibers in a motor unit are least in______________?
Succinyl choline acts to block neuromuscular transmission by_______________?