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!
Q. How do calcium ions participate in muscle contraction? Why do both muscle relaxation and muscle contraction spend energy?
In the muscle cells calcium ions are stored within the sarcoplasmic reticulum when a motor neuron emits stimulus for the muscle contraction neurotransmitters called acetylcholine are released in the neuromuscular junction and the sarcolemma is excited, The excitation is conduced to the sarcoplasmic reticulum that then realeases calcium ions into the sarcomeres.
In the sarcomeres the calcium ions bind to troponin molecules associated to actin activating myosin binding sites of actin the myosin, then able to bind to actin, pulls this protein and the sarcomere shortens. The summation of simultaneous contraction of sarcomeres and myofibrils constitutes the muscle contraction during muscle relaxation the calcium ions return back to thesarcoplasmic reticulum.
For myosin to actin to bind, and thus for the contraction to occur, hydrolysis of one ATP molecule is necessary. During relaxation the return of calcium ions to the sarcoplasmic reticulum is an active process that spends ATP too. So both muscle and relaxation contraction is energy-spending processes.
Q. Requirements of various nutrients in constipation? The requirements of various nutrients are not altered in constipation. It is essentially a normal balanced diet (normal RD
Rough and Smooth Endoplasrnic Reticulum (RER and SER) ER is differentiated into two regions, granular or rough endoplasrnic reticulum (RER) and agranular or smooth endoplasrni
How much Minerals should be taken for management of obesity? A diet high in sodium may promote retention of fluid in the body. Moderate restriction in the use of common/table s
Q. Define High Density Lipoproteins ? High density lipoproteins (HDL) are the smallest of the lipoprotein species and transport approximately 20 to 30 per cent of plasma choles
what is the composition of enzymes ?
which was the first harmone discovered#
how to explain an example from each class of vertebrate
state 5 advantages and disadvantages of protozoa
Describe the DistaE Dissection Techniques of Surgery? DistaE Dissection (De Bakey Type ZII or Stanford Type B) : Techniques of Surgery : The approach is through a left p
Ask quesWhat type of antigenic agents may constitute vaccines? tion #Minimum 100 words accepted#
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: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd