Answer:
The muscular system is composed of specialized cells called muscle fibers. Their predominant function is contractibility. Muscles, attached to bones or internal organs and blood vessels, are responsible for movement. Nearly all movement in the body is the result of muscle contraction
Explanation:
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Crown me as brainliest:)
Ventilation is the act of moving/pushing air into and out of the lungs.
I think the answers is the first one
Answer:
Where does the dna in our cells come from? it comes through inheritance from parents
Explanation:
Every living organism has its genetic make-up which is located in the DNA and resides in the nucleus of a cell. DNA is unique to an individual without having a similar or carbon copy, it is inherited from the parents.
