Both muscle relaxation and muscle contraction require ATP.
Calcium
true
Inhalation requires the contraction of the diaphragm, which takes ATP. Exhalation is simply the passive relaxation of that muscle, in which the atmospheric pressure causes the lung to deflate, taking no ATP.
Lack of O2 and blood being provided to the bones
muscle relaxation can help you!
ATP is used for all the processes inside the body that require energy, such as muscle movement, and active transport.
Mitochondria are the cell's power plant, producing ATP. Since muscles require a lot of ATP for contracting, lots of mitochondria are present in muscle cells (myocytes) in order to provide sufficient ATP
Relaxation of a skeletal muscle usually involves the Golgi tendon proprioceptors.
progressive relaxation
Muscle fibers are rich in ATP. All muscle fiber types are rich in ATP (having many mitochondria).
reuptake of calcium by the sarcoplasmic reticulum.
The use of the ATP system uses the P to bond with other P's to allow the chemical reaction where the energy is given off to produce the muscle contraction. The P is separated from the AT and joins with the PC to form PPC. The ATP system does not require oxygen as it's reactant.