Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
All or None Response
A very weak stimulus does not result in an action potential. The stimulus must have a certain strength to evoke an excitation. This is the threshold value below which no action potential results. Once generated the size of the action potential is not influenced by the magnitude or amplitude of the stimulus. Even if we double or triple the stimulus, the action potential remains the same. The stimulus causes either a full response or none at all. In physiology, this type of response is called all-or-none response.
When a greater stimulus strength is applied to a neuron identical action potentials are produced more frequently. When an entire collection of axons is stimulated as in a nerve, different axons will be stimulated at different frequencies. A low intensity stimulus will activate fibres with low threshold values and as the stimulus intensity is increased more and more fibres will be activated. This process is known as recruitment. Another important property of nerve impulse to be noted is that during the time that a patch of axon membrane is producing an action potential, it is incapable of responding to another stimulus i.e. it is refractory to further stimulation. If the second stimulus is applied when the Na+ gates are open the membrane remains in absolute refractory period but if the stimulus is applied when the K+ gates are open the membrane is in relative refractory period and can be depolarised only if the stimulus is very strong.
Use the genetic code table Assignment34 The codon GCA specifies which amino acid?
BLOOD - Blood is a mobile connective tissue composed of a fluid, the plasma and the cells, the blood corpuscles. Blood is basis of life. Blood is the softest tissues
Explain the issues related to food production? Let us now understand some issues related to food production, these are: Factors influencing food production, Analysi
Q. What are the cells responsible for the production of antibodies? The cells that produce antibodies that is the cells of the humoral immune system are the B lymphocytes (B ce
Each of the three eukaryotic RNA polymerases has more subunits or 12 and so these are big complex enzymes. The genes encoding some of the subunits of each eukaryotic enzyme show
Population Dispersal Population dispersal is the movement of individuals into or out of the population or the population area. It occurs in three following ways in a popu
BACK CROSS When F 1 individual (Tt) is crossed with one of the two parents, either tall (TT) or dwarf (tt), such a cross is called the back cross. There are two possibilities
Define Body Building functions of proteins? The primary functions of proteins, as you might be aware, is tissue growth and maintenance. Protein contains amino acids - the build
Explain Technical factors influencing food production? Improvement in technology has a significant impact on productivity. Improvements may occur in seed production, fertilizer
Estimation of minerals in foods The minerals in foods are determined by ashing or incineration at temperatures in the region of 500°C following standard procedure. This destroy
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd