We need nutrients and oxygen to be supplied to our cells at a very fast rate as our cells need a lot of energy to keep us alive. Therefore we must have an efficient transport system to transport nutrients and oxygen to the billions of cells in our body. The transport system in man is known as the circulatory system.
pulmonary - lungs -- circulatory helps transport as well.
pulmonary - lungs -- circulatory helps transport as well.
by the cardiovascular system (in blood)
then you can not transport blood threw out the body.
The respiratory system is most directly involved in the transport of oxygen in humans. Oxygen enters the body through the lungs during inhalation and is then transported by the circulatory system via red blood cells to tissues and organs where it is needed for cellular respiration.
because they just cant
As for seeds, we humans eat fruit and sometimes drop them. so when a squirrel comes and sees the seed, it will dig a hole onto the dirt and in a couple of days the plant will grow and give food to other plants which are in need of it.
mammals have closed circulatory system and further double circulatory system.
The electron acceptor for humans in the electron transport chain is oxygen.
why is circulatory system known as transport system
The main transport medium in humans is blood.
An extensive transport system that runs through the body would be the circulatory system. It travels blood throughout the body and passes the oxygen that muscles need.