Body System Interactions

The digestive and respiratory systems pair together to maintain homeostasis through feedback loops. Which type of feedback loop is primarily involved when these systems work together to bring oxygen and nutrients to cells for cellular respiration?

• Negative feedback loop, which helps regulate and stabilize oxygen and nutrient levels in the body.

• Positive feedback loop, which amplifies changes in oxygen and nutrient levels in the body.

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The immune system fights infections. The circulatory system pairs with the immune system to fight infections through feedback loops. Which of the following best describes how a negative feedback loop is involved in this process?

• blood is made in the bones.

• white blood cells from the circulatory system are delivered to the site of infection.

Why are the lungs, the major organ of the respiratory system, also considered an excretory organ?

• They get rid of carbon dioxide, a cellular waste, which helps regulate levels of carbon dioxide in the blood.

• They get rid of oxygen, a cellular waste, which helps regulate levels of oxygen in the blood.

How do the skeletal and circulatory systems relate to each other?

• Bone marrow produces blood.

• The heart is made of cardiac muscle tissue.

All organ systems have this at its most basic unit.

• Cells

• Tissues

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What body system transports nutrients & oxygen to and carbon dioxide and waste from the cells?

• Circulatory System

• Nervous System

What is a major role of the endocrine system, especially in regulating body functions through negative feedback loops and positive feedback loops?

• release hormones to control many body functions

• digest and absorb food

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Which body system is primarily responsible for removing waste products through a negative feedback loop to maintain homeostasis?

• Excretory System

• Muscular System

How does the respiratory system use a negative feedback loop to maintain the supply of oxygen to cells for cellular respiration?

• By increasing oxygen supply when levels are low and decreasing it when levels are sufficient

• By producing hormones

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Which two systems work together in a negative feedback loop to deliver glucose and oxygen to body cells for energy production?

• Skeletal and Endocrine Systems

• Digestive and Circulatory Systems