1
vote
0answers
42 views

Calcium levels and nerve hyperexcitation

Why does lower blood calcium levels (or lower calcium levels in ECF) cause nervous hyperexcitaton? Why does it cause over stimulation of nerves and muscles and spasmic contractions of muscles? This is ...
3
votes
1answer
61 views

How do muscle relaxants work?

Do they act directly on the muscle and actually relax muscle tissue and ease spasms, or do they just prevent your brain from receiving signals that inform you of tight muscles? In the latter case, ...
1
vote
1answer
552 views

Molecular cause of cramps, spasms and strengthening in muscles? (incl. intro to muscle contraction)

When motor neurons are stimulated to trigger an action potential, this potential propagates down the spine, eventually reaching a neuromuscular junction, causing the release of acetylcholine (ACh). ...