The heart is the system’s pump and the blood vessels are like the delivery routes and it is a muscle. The pumps are the beat.
The heart is a muscle about the size of a fist and it is the muscle in the body that works the hardest.
The statement that the heart muscle rests only between beats is true.
The answer is false because you don’t have to advocate everything
Answer:
Flu
Explanation:
That's called a flu shot.
Answer: don’t know how I could really answer this question but okay.
“ljnj jknjkln jlnlkn jnjn jnjnjknjnkjnk jnkj jkn k kj jk kjkjn jknkjkjnjk kjnkjn kjnkjnkjn jknjknn jk jk kjn kjnjkn”
what is this lol
