Question

42 both the respiratory system and the digestive system involve the uptake of necessary molecules from an animals surroundings. alveoli are tiny sacs that aid in the exchange of carbon dioxide and oxygen in the lungs. intestinal villi are tiny projections along the lining of the intestines used to take in nutrients from food passing through. which system must interact with the respiratory and digestive systems to transport gases and nutrients throughout the body? a immune system b integumentary system c endocrine system d circulatory system

Explanation:

The circulatory system is responsible for transporting gases (such as oxygen and carbon - dioxide) and nutrients throughout the body. It interacts with the respiratory system for gas exchange in the alveoli and with the digestive system for nutrient uptake in the intestines. The immune system defends against pathogens, the integumentary system is the body's outer covering, and the endocrine system regulates body functions through hormones.

Answer:

a. Circulatory system