Medicine
Medicine, 07.10.2019 16:20, thisusernameistaken2

At rest in muscle cells, the em is not constant but shows seemingly random fluctuations that appear to be in units of about 0.5 mv. these are called miniature endplate potentials (mepp) and are due to the fusion of a single vesicle containing acetylcholine with the presynaptic nerve terminal membrane.
(a) if the muscle cell is 50 μm in diameter and 10cm long, and its specific capacitance is 1 μf/cm2, how much charge must flow for this 0.5mv change due to a single vesicle fusion event?
(b) if ena = +66mv and em = -85mv, and the mepp rises in 0.5 ms, what is the average conductance increase in the membrane due to the single fusion event? assume the current is all carried by na+.
(c) how many channels do you think open during the mepp? use 40 ps for the unitary conductance of the acetylcholine receptor.

answer
Answers: 2

Other questions on the subject: Medicine

image
Medicine, 03.07.2019 14:10, heyitseddie06
Give the names of the following body motions produced by muscle actions: increases the angel of a joint. turns the palm downward. decreases the angle of a joint. points the toes.
Answers: 3
image
Medicine, 04.07.2019 02:10, cindyc1103
Females who lift weights are not going to develop large, bulky muscles because a. they have more muscle fibers than men b. they have thicker muscle fibers than men c. they have lower testosterone levels than men d. all of the above does not change length
Answers: 2
image
Medicine, 04.07.2019 05:10, Joshghopper
Answers to the concentration of medication question
Answers: 3
image
Medicine, 09.07.2019 19:10, help1219
An african american young adult is admitted to the emergency department in sickle cell crisis with a report of 10/10 pain. the patient is known to several of the nurses and physicians in the department who have labeled the patient as a “drug seeker”. initial discussion post: identify one (1) intervention that can be taken by the rn to reduce the stigma and improve management of acute and chronic pain associated with sickle cell disease. does the intervention apply only to the patient? does it apply only to the interprofessional team? does it apply to both the patient and the members of the interprofessional team? explain and support your answer.
Answers: 2
Do you know the correct answer?
At rest in muscle cells, the em is not constant but shows seemingly random fluctuations that appear...

Questions in other subjects:

Konu
English, 20.01.2021 22:00
Konu
Mathematics, 20.01.2021 22:00