Search found 4 matches

by MohammedAmer
Wed Apr 22, 2009 4:45 pm
Forum: Physiology
Topic: Regulation of a heartbeat
Replies: 2
Views: 16503

ANS connects to SA node via dual innervation: First from sympathetic nervous system (Spinal nerve T1-4) Second from parasympathetic nervous system(Cranial nerve CN-X) Sympathetic stimulation lead to increase rate of SA impulses so increase heart rate Parasympathetic stimulation lead decrease rate of...
by MohammedAmer
Wed Dec 03, 2008 5:41 am
Forum: Zoology Discussion
Topic: The Endocrine System
Replies: 3
Views: 4424

Pig insulin is almost human insulin with difference of only one amino acid.The cause for immune response isn't the insulin itself,but impurities in the insulin.Even "DNA-recombinent" synthesized insulin_which is referred as human insulin_can cause allergy because of impurities of bacteria ...
by MohammedAmer
Fri Nov 28, 2008 7:22 am
Forum: Human Biology
Topic: Calcium ions
Replies: 2
Views: 5512

In fact,they don't......the free-bound proportion of the vesicles at synapse are in a continous Brownian movement.So as the vesicles come close to membrane with excess calcium ion...that induce fusion of vesicle with membrane and exocytosis occurs.
I hope I have answered ur question.:)
by MohammedAmer
Wed Nov 26, 2008 3:05 am
Forum: Molecular Biology
Topic: Carbon rearrangement in the citrate to isocitrate step
Replies: 2
Views: 2846

Confirm your question.......The isolated isocitrate, was it labeled at 2,5 or 2,4 ?????
Because from my knowledge,the usual isn't 4,5 !!!!!!
please,Confirm...........So,I can help u