Describe how muscle contraction occurs. Use all of the following words in your explanation--be specific. Word Bank: Sarcomere, Neuromuscular Junction, Sarcoplasmic Reticulum, Myosin, Troponin, Actin, Tropomyosin.
Motor Neuron, Acetylcholine, Calcium, ATP, Myosin Head, Hydrolysis, Shorten/Elongate, Contract

Increased use of cocaine can reduce the period of stimulation. true or false

Asoccer mom is driving her 75 year old grandmother and her 9 year old daughter home after the game. the grandmother and daughter were both in the back seat and both were wearing their seat belts. a car ran a red light in front of them, causing them to t-bone that car on the passenger side. fortunately there were no serious injuries, but the grandmother did sustain several rib fractures. the mother, daughter and driver of the at-fault car were shaken up but unhurt. what are some possible reasons that the grandmother sustained rib fractures while the other victims did not?

During polarizacion potassium has a blank charge sodium has a blank charge and calcium has a blank charge