You didn't really provide us with any options? It must be noted that generally, the structure of the skeletal system also dictates its function. With that I mean that having bones and a skeletal system enables us to move more efficiently and to have the pose which we have.
Myofibrils are bundles of contractile filaments which are arranged in parallel groups in thecytoplasm of striated muscle cells.
The statement that myofibrils do the actual movement during exercise is true. because the main function of the myofibril is to perform muscle contraction, and muscle contractions are the actual movements of the muscles.
low density lipoproteins are the principal transport vehicle for what in the blood
cholesterol
Weight training has many beneficial effects on body composition.
It increases muscle mass which increases your metabolism, which makes you burn more calories during a day while doing nothing. Moreover, there are several documented and known health benefits such as increased mental performance a few hours after weight training, improved cardiovascular functioning, etc.
Weight training is an excellent was of exercising.
Short term: Your heart beats harder and faster and your blood vessels dilate, pushing more blood into your large muscles and raising your blood pressure.
Long term: Consistently elevated heart rate, blood pressure, and stress hormones can increase your odds of heart attack, stroke, and hypertension.
<u>hope this helped and please mark as brainliest <3</u>
