Compare the reaction times for voluntary vs. involuntary activation of the quadriceps muscle. what might account for the observed differences in reaction times? outline what has to occur in the body for each reaction to occur. refer to your drawing from step 24. information from the flow chart you created in activity 2.2.1 might also be .

By comparing the time it takes to react a voluntary muscle and a involuntary one we see that the voluntary takes more time. This is because it takes time for the information to go to the brain, be processed and then have emitted the response of contracting the quadriceps muscle.
The involuntary contraction occurs without being processed by the brain but instead the spinal cord, and that's called a reflex.
 

Wetlands form where water and land meet. a lake with a wetland fringe can fill in with decayed plant and animal material to become a wet meadow. a pond can fill in to become a bog or fen. sediment can fill in a river marsh to become a swamp.flooding of coastal lowlands from rising sea levels has created broad coastal marshes that are protected from wave action by barrier islands or reefs. coastal wetlands also form when rivers deposit sediment as they reach the ocean. plants then take root and hold the soil firm against the forces of tides and waves.