a. the Z lines are pulled closer together
b. the I band remains the same
c. the A band becomes shorter
d. the H zone widens slightly
e. all of above

–what is the role of ATP in muscle contraction?
a. to form corss-bridges between thick and thin filaments
b.to break the cross-bridge when it binds to myosin and provide energy to myosin to form its high-energy configuration
c. to remove the tropomyosin-troponin complex from blocking the binding sites on actin
d. to bend the cross-bridge and pull the thin filaments toward the center of the sarcomere
e. to replace the supply of creatine phosphate

–how does calcium affect muscle contraction?
a. released from the T tubules
b. binding of acetylcholine opens calcium channels in the plasma membrane
c. binds to tropomyosin
d. causes tropomyosin to move away from the myosin-biding sites on the actin filament
e. release from sarcoplasmic reticulum cheap drugs without prescription changes the membrane potential of the muscle cell

hello, was wondering something. I know as an enlisted, you do not have to sign if you did not get the mos of your choice. but since I am about to do the last 2 yrs of rotc, can you still deny the contract? or you are pretty much obligated to do that job in your contract

sorry, just makes no sense if i have a professional degree in designing highways, buildings, bridges, and roads (engineering; for the dumb dumb’s, its a prof. degree like a doctor, lawyer, ect. not a construction worker or combat engineer) why they would give me another mos like dentist or aerospace engineering officer. Because a lot of people are telling me you are not guaranteed your mos, even as an officer.
wow… engineering is not a professional degree… so I am guessing a medical degree is not professional then. You must have no knowledge in the educational world paratrooper. That is why they have their own school, and must have an engineering license in order to DESIGN and INSPECT and DETERMINE what materials will be used. Engineers are known as the math/physics wiz, while prescription medicine the doctors are know as the chemi/biology wiz