Heart 1
What is the main function of the circulatory system?
A. To digest food
B. To transport substances in the body
C. To control movement
B. To transport substances in the body
Which chamber pumps blood to the body?
A. Right ventricle
B. Left ventricle
C. Right atrium
B. Left ventricle
What is the main function of the digestive system?
A. To break down food into nutrients
B. To pump blood
C. To control movement
A. To break down food into nutrients
What is the function of the large intestine?
A. Absorb nutrients
B. Absorb water
C. Produce enzymes
B. Absorb water
Which organ pumps blood throughout the body?
A. Lungs
B. Brain
C. Heart
C. Heart
What system works with the circulatory system to deliver oxygen?
A. Digestive system
B. Respiratory system
C. Skeletal system
B. Respiratory system
Where does digestion begin?
A. Stomach
B. Mouth
C. Small intestine
B. Mouth
Which organ produces digestive enzymes for carbohydrates, proteins, and fats?
A. Pancreas
B. Liver
C. Gallbladder
A. Pancreas
What type of blood vessels carry blood away from the heart?
A. Veins
B. Arteries
C. Capillaries
B. Arteries
What gas is removed from the body by the circulatory system?
A. Oxygen
B. Nitrogen
C. Carbon dioxide
C. Carbon dioxide
What is the role of saliva?
A. Break down fats
B. Break down starches
C. Absorb nutrients
B. Break down starches
What is the final stage of digestion called?
A. Absorption
B. Elimination
C. Digestion
B. Elimination
What type of blood vessels carry blood back to the heart?
A. Veins
B. Arteries
C. Capillaries
A. Veins
What is blood pressure?
A. The speed of blood flow
B. The force of blood against vessel walls
C. The amount of blood in the body
B. The force of blood against vessel walls
Which organ connects the mouth to the stomach?
A. Trachea
B. Esophagus
C. Intestine
B. Esophagus
What type of digestion involves breaking food into smaller pieces physically?
A. Chemical digestion
B. Mechanical digestion
C. Cellular digestion
B. Mechanical digestion
What do red blood cells carry?
A. Oxygen
B. Nutrients
C. Waste
A. Oxygen
What is the name of the largest artery in the body?
A. Vena cava
B. Aorta
C. Pulmonary vein
B. Aorta
What muscle movement pushes food through the esophagus?
A. Diffusion
B. Peristalsis
C. Circulation
B. Peristalsis
What type of digestion uses enzymes to break down food?
A. Mechanical digestion
B. Chemical digestion
C. Physical digestion
B. Chemical digestion
What is the liquid part of blood called?
A. Platelets
B. Plasma
C. Cells
B. Plasma
What happens in the capillaries?
A. Blood is pumped
B. Gas and nutrient exchange occurs
C. Blood is stored
B. Gas and nutrient exchange occurs
Which organ uses acid to break down food?
A. Liver
B. Stomach
C. Pancreas
B. Stomach
What are nutrients?
A. Waste products
B. Substances the body needs for energy and growth
C. Undigested food
B. Substances the body needs for energy and growth
Which blood vessels are the smallest?
A. Arteries
B. Veins
C. Capillaries
C. Capillaries
Which side of the heart pumps oxygen-rich blood?
A. Right side
B. Left side
C. Middle
B. Left side
What is the function of the small intestine?
A. Absorb nutrients
B. Store waste
C. Break bones
A. Absorb nutrients
What structure in the small intestine increases surface area for absorption?
A. Villi
B. Alveoli
C. Neurons
A. Villi
What is the function of white blood cells?
A. Carry oxygen
B. Fight infection
C. Clot blood
B. Fight infection
What type of circulation moves blood between the heart and lungs?
A. Systemic circulation
B. Pulmonary circulation
C. Digestive circulation
B. Pulmonary circulation
Which organ produces bile?
A. Pancreas
B. Liver
C. Stomach
B. Liver
What happens to food in the stomach?
A. It is absorbed
B. It is mixed and chemically broken down
C. It is eliminated
B. It is mixed and chemically broken down
What do platelets help do?
A. Carry oxygen
B. Fight germs
C. Form clots
C. Form clots
What type of circulation moves blood to the rest of the body?
A. Pulmonary circulation
B. Systemic circulation
C. Cellular circulation
B. Systemic circulation
What is the function of bile?
A. Break down proteins
B. Break down fats
C. Absorb vitamins
B. Break down fats
What is feces?
A. Digested nutrients
B. Liquid waste
C. Solid waste
C. Solid waste
Which part of the heart receives blood returning from the body?
A. Left ventricle
B. Right atrium
C. Left atrium
B. Right atrium
What structure prevents blood from flowing backward in the heart?
A. Valves
B. Chambers
C. Arteries
A. Valves
Where is bile stored?
A. Liver
B. Gallbladder
C. Pancreas
B. Gallbladder
Which system works with the digestive system to transport nutrients?
A. Respiratory system
B. Circulatory system
C. Nervous system
B. Circulatory system