Excitation threshold of neuron
What is excitation threshold of the neuron? How does this threshold relate to “all-or-nothing” rule of neural transmission?
Expert
Excitation threshold of the neuron is depolarization level which should be caused by the stimulus to be transmitted as a neural impulse. This value is about –50 mV.
The transmission of neural impulse along neuronal membrane obeys the all-or-nothing rule: or it takes place with maximum intensity or nothing takes place.
Always and only when the excitation threshold is reached depolarization continues and membrane reaches its maximum probable positive polarization, about +35 mV. If excitation threshold is not reached nothing takes place.
Write down the typical structures of seed? And also describe the term endosperm?
Objective of Management The basic purpose of management of an enterprise is to achieve enterprise goals. For a business, the main purpose is to earn
Define the term primary mediators in brief?
Name the three portions of small intestine? Answer: The small intestine is classified into three parts as: duodenum, jejunum and ileum.
How circulatory system of the reptiles is characterized? Specify the basic difference between heart of the reptile and the amphibian?
How does intensity of facilitated diffusion differ in relation to the concentration of the moved substance? Also explain the limiting factor?
Explain the relationship between estrogen level and the LH level in menstrual cycle? Specify the function of LH in menstrual cycle and when does its blood concentration reach the peak?
Name the hormones secreted by neurohypophysis? Describe their respective functions?
Objectives of Planning Planning in any organization serves to realize the following objectives: 1 Reduc
Explain how heart contraction triggered?
18,76,764
1949011 Asked
3,689
Active Tutors
1459304
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!