The main function of ___ is to take in oxygen and give out carbon dioxide.

Digestive system

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Respiratory system

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Reproductive system

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Excretory system

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Solution

The correct option is B
Respiratory system

The respiratory system includes the nose, pharynx, larynx, trachea, bronchi, and lungs. It brings oxygen to our bodies which is needed for our cells to live and function properly and it also helps to get rid of carbon dioxide which is a waste product of cellular function.

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Similar questions

Q. Explain the functional correlation of circulatory system with respiratory, digestive, and excretory system.

The life processes in humans are controlled and regulated by:
A. Reproductive and endocrine systems.

B. Respiratory and nervous systems.

C. Endocrine and digestive systems.

D. Nervous and endocrine systems.

Trace the passage of oxygen and carbon dioxide in human respiratory system?

Question 33
In humans, the life processes are controlled and regulated by

(a) reproductive and endocrine systems
(b) respiratory and nervous systems
(c) endocrine and digestive systems
(d) nervous and endocrine systems

Q. Which of these is not an organ system?
(a) heart
(b) respiratory
(c) digestive
(d) excretory

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