Circulatory and Respiratory Systems

What are the main components of the circulatory system?

• Heart, blood vessels (arteries, veins, capillaries), and blood.

• Lungs, trachea, and bronchi.

• Kidneys, ureters, and bladder.

• Stomach, intestines, and liver.

What is the function of red blood cells in the circulatory system?

• To transport nutrients from the digestive system to the body's tissues.

• To transport oxygen from the lungs to the body's tissues and carry carbon dioxide back to the lungs.

• To regulate body temperature and maintain homeostasis.

• To fight infections and protect the body from diseases.

What is the main organ in the respiratory system?

• Heart

• Lungs

• Kidneys

• Stomach

What is the role of the capillaries in the circulatory system?

• To facilitate the exchange of oxygen, carbon dioxide, nutrients, and waste products between blood and tissues.

• To pump blood throughout the body.

• To store blood for future use.

• To produce red blood cells.

How does physical activity affect heart rate and breathing rate?

• As physical activity increases, heart rate decreases and breathing rate decreases.

• As physical activity increases, heart rate increases and breathing rate increases.

• Physical activity has no effect on heart rate and breathing rate.

• As physical activity increases, heart rate increases and breathing rate decreases.

What is the function of the alveoli in the respiratory system?

• To provide a large surface area for gas exchange between air and blood.

• To filter dust and particles from the air.

• To warm and humidify the air before it enters the lungs.

• To produce mucus that traps pathogens.

What is the significance of the pulmonary circulation?

• It carries deoxygenated blood from the heart to the lungs for oxygenation and returns oxygenated blood back to the heart.

• It transports oxygenated blood from the heart to the rest of the body.

• It removes carbon dioxide from the lungs and expels it into the atmosphere.

• It circulates nutrients from the digestive system to the heart.

What is the role of the diaphragm in respiration?

• The diaphragm helps to filter air before it enters the lungs.

• The diaphragm contracts and relaxes to help draw air into and push air out of the lungs.

• The diaphragm is responsible for producing sound during speech.

• The diaphragm regulates the temperature of the air entering the lungs.

What is the primary function of the respiratory system?

• To facilitate gas exchange, providing oxygen to the body and removing carbon dioxide.

• To circulate blood throughout the body.

• To digest food and absorb nutrients.

• To regulate body temperature and maintain homeostasis.

What is the role of the heart in the circulatory system?

• To pump blood throughout the body, supplying oxygen and nutrients to tissues and removing waste products.

• To filter toxins from the blood and produce urine.

• To regulate body temperature by controlling blood flow.

• To store blood for emergency use during physical activity.