I believe the correct answer would be : D. Keratin
I hope that this helps you !
Muscles are named according to their size, location, function, origin or insertion point. The location of muscles are named on the bases of their size and location such as sternocleidomastoid which is named after its origin ( on ster-num and clavicle) and insertion ( mastoid process).
Naming of the muscles after its function that allows a person to move speak and chew , they can control heartbeat , breathing and digestion.Skeletal muscles are attached to bones and helps in its movement , and perform involuntary function and cardiac contractions.
There are more than 650 muscles in human body such as smooth muscle, they perform variety of vital function.
To learn more about the Muscles here
brainly.com/question/9883108
#SPJ4
Oxygen is an electronic which can be defined as pure substance..we breath in oxygen and breath out carbon dioxide
During acclimatization over a few days to weeks, the body produces more red blood cells to counteract the lower oxygen saturation in blood in high altitudes. Full adaptation to high altitude is achieved when the increase of red blood cells reaches a plateau and stops.Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). ... At the beginning of exercise, your body removes the parasympathetic stimulation, which enables the heart rate to gradually increase.
D)all of them
Triglycerides vary with respect to the number of - C atoms and double bonds in the tails.
Triglycerides are esters derived from glycerol and three fatty acids. These are the main constituents of body fat in humans and other animals, as well as vegetable fat. There are two main types of triglycerides - saturated and unsaturated.