keratin
The correct answer is NOT keratin... the correct answer is myoglobin. This is the oxygen-binding pigment in muscle.
no
Myoglobin-myoglobin stores oxygen from red blood cells, which are red. The reason myoglobin stores oxygen (if you wanna know) is to have it available when there's muscle activity.
Yes, during periods of intense exercise when oxygen supply is limited, skeletal muscle can produce lactic acid through anaerobic metabolism. This can lead to muscle fatigue and soreness.
Yes
yes
Myoglobin
Oxygen is transported by red blood cells and is released into tissues as they pass through capillaries in the tissue.
When muscle cells are oxygen deprived, the heart must work harder to deliver enough oxygenated blood to the tissues. It may increase heart rate or contractility to compensate for the decreased oxygen supply. If oxygen deprivation persists, it can lead to tissue damage or even a heart attack.
Myoglobin's function is similar to that of hemoglobin, which carries oxygen in red blood cells to various tissues. Myoglobin has even higher affinity for oxygen than hemoglobin and is specific to muscle cells. Myoglobin thus acts as a storage of oxygen, as it holds oxygen inside heart and skeletal muscles.
Myoglobin is synthesized in muscle cells and imparts the reddish-brown color of skeletal muscle tissue. Like hemoglobin, myoglobin can combine loosely with oxygen. This ability to temporarily store oxygen reduces a muscle's requirement for a continuous blood supply during muscular contraction.
It must be able to continue aerobic metabolism when skeletal muscle cannot
Hemoglobin