Question

i) Why is lymph called an
extra cellular fluid?
ii) Sam went for jogging in
the morning. After he
came back his heart beat
was 100 per minute. Can you
explain why?​

Answer 1

Explanation:

1)Lymph is a fluid produced by the immune system which contains white blood cells that fight off infectious substances that have entered the body. ... Extracellular means outside of the cells. Lymph is extracellular because it does not travel inside the cells, but instead travels free of the cells.

2)When you are exercising, your muscles need extra oxygen—some three times as much as resting muscles. This need means that your heart starts pumping faster, which makes for a quicker pulse. Meanwhile, your lungs are also taking in more air, hence the harder breathing.

therefore heartbeat increases to 100 per minute