Comparing Body Systems

What is the primary function of the respiratory system?

• To regulate body temperature.

• To digest food.

• To circulate blood.

• To facilitate gas exchange (oxygen and carbon dioxide) between the body and the environment.

How do the digestive and urinary systems differ in waste processing?

• The digestive system processes liquid waste, while the urinary system eliminates solid waste.

• The digestive system filters blood, whereas the urinary system breaks down food.

• Both systems remove solid waste from the body.

• The digestive system eliminates solid waste, whereas the urinary system removes liquid waste.

Which system is responsible for gas exchange in the body?

• Respiratory system

• Circulatory system

• Nervous system

• Digestive system

What role does the nervous system play in digestion?

• The nervous system only affects blood circulation during digestion.

• The nervous system has no impact on digestion.

• Digestion is solely regulated by hormones.

• The nervous system regulates digestive processes by controlling gut motility and secretion through the enteric and autonomic nervous systems.

How do the respiratory and circulatory systems work together?

• They regulate body temperature through breathing.

• They transport nutrients to the lungs for oxygen.

• The respiratory and circulatory systems exchange oxygen and carbon dioxide for cellular respiration.

• They filter toxins from the blood before the heart.

What are the main organs in the urinary system?

• Kidneys, ureters, bladder, urethra

• Brain, spinal cord, nerves, muscles

• Stomach, intestines, spleen, gallbladder

• Lungs, heart, liver, pancreas

How does the nervous system affect respiratory rate?

• No effect on respiratory rate.

• It regulates breathing through the medulla oblongata and pons based on chemoreceptor feedback.

• Breathing is regulated by the heart.

• Controlled solely by the lungs.

How do the lungs' structure help their function?

• The lungs filter out pollutants.

• The large surface area and thin-walled alveoli of the lungs facilitate efficient gas exchange.

• The lungs have a rigid structure that prevents expansion.

• The lungs primarily store air.

What is the main purpose of the digestive system?

• To break down food and absorb nutrients.

• To filter toxins from the blood.

• To store food.

• To regulate body temperature.

How do the kidneys contribute to homeostasis?

• The kidneys filter toxins from the blood only during sleep.

• The kidneys are responsible for digestion and nutrient absorption.

• The kidneys produce hormones that increase appetite.

• The kidneys help maintain homeostasis by regulating water balance, electrolytes, and blood pressure.