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Internal communication within the body is carried out through the activities of the…

Which of the following systems has major roles in both transport and defence of the human body ?

Which of the following is primarily a transport system ?

Which of the following is NOT a component of a negative feedback loop?

Which of the following is true about intracellular fluid?

In the body, positive feedback loops

Movement of substances against their concentration gradient is known as

Osmosis is movement of

The sodium-potassium pump is an example of

The serous membrane covering the stomach is the