Digestive System
Which organ is responsible for absorbing nutrients into the bloodstream?
A. Stomach
B. Small Intestine
C. Large Intestine
D. Liver
Answer: B. Small Intestine
Which two body systems work together to move the body?
A. Nervous and Circulatory
B. Muscular and Skeletal
C. Digestive and Respiratory
D. Respiratory and Skeletal
Answer: B. Muscular and Skeletal
Which organ is the main part of the respiratory system?
A. Heart
B. Lungs
C. Brain
D. Kidneys
Answer: B. Lungs
What is the main organ in the circulatory system?
A. Brain
B. Heart
C. Lungs
D. Liver
Answer: B. Heart
Which system works with the respiratory system to move oxygen around the body?
A) Digestive system
B) Circulatory system
C) Musculo-skeletal system
D) Nervous system
Correct Answer: B) Circulatory system
What is the main function of saliva in digestion?
A. To break down fat
B. To moisten food and begin breaking down starches
C. To absorb water
D. To store vitamins
Answer: B. To moisten food and begin breaking down starches
What is the name of the tissue that connects muscles to bones?
A. Ligament
B. Tendon
C. Cartilage
D. Joint
Answer: B. Tendon
What is the name of the tiny air sacs in the lungs where oxygen enters the blood?
A. Bronchi
B. Alveoli
C. Trachea
D. Diaphragm
Answer: B. Alveoli
What type of blood vessels carry blood away from the heart?
A. Veins
B. Arteries
C. Capillaries
D. Atria
Answer: B. Arteries
What is the largest organ in the human body?
A) Liver
B) Brain
C) Skin
D) Heart
Correct Answer: C) Skin
Which of these is NOT part of the digestive system?
A. Esophagus
B. Lungs
C. Stomach
D. Pancreas
Answer: B. Lungs
What is the main function of the skeletal system?
A. To help with breathing
B. To circulate blood
C. To provide support and protect organs
D. To digest food
Answer: C. To provide support and protect organs
Which muscle helps the lungs take in air?
A. Stomach
B. Heart
C. Diaphragm
D. Esophagus
Answer: C. Diaphragm
What is the main job of red blood cells?
A. To fight infections
B. To carry oxygen
C. To pump blood
D. To produce energy
Answer: B. To carry oxygen
Which of these systems removes waste from the body?
A) Circulatory system
B) Digestive system
C) Respiratory system
D) Excretory system
Correct Answer: D) Excretory system
What is the role of the large intestine in digestion?
A. To digest fats
B. To absorb water and form waste
C. To produce saliva
D. To release enzymes
Answer: B. To absorb water and form waste
Which type of muscle is under your control?
A. Cardiac muscle
B. Smooth muscle
C. Skeletal muscle
D. Involuntary muscle
Answer: C. Skeletal muscle
What is the main gas that we exhale?
A. Oxygen
B. Nitrogen
C. Carbon Dioxide
D. Hydrogen
Answer: C. Carbon Dioxide
Which part of the heart pumps oxygen-rich blood to the rest of the body?
A. Left atrium
B. Left ventricle
C. Right atrium
D. Right ventricle
Answer: B. Left ventricle
What are the building blocks of all living things?
A) Organs
B) Cells
C) Bones
D) Tissues
Correct Answer: B) Cells
What is the name of the process that moves food through the digestive tract?
A. Digestion
B. Peristalsis
C. Circulation
D. Respiration
Answer: B. Peristalsis
What is the name of the soft tissue inside bones where blood cells are made?
A. Bone marrow
B. Cartilage
C. Ligament
D. Muscle
Answer: A. Bone marrow
What is the name of the tube that carries air from your throat to your lungs?
A. Esophagus
B. Trachea
C. Bronchi
D. Larynx
Answer: B. Trachea
What is the liquid part of blood called?
A. Platelets
B. Plasma
C. Hemoglobin
D. White blood cells
Answer: B. Plasma
What organ system controls all the others?
A) Digestive system
B) Nervous system
C) Circulatory system
D) Respiratory system
Correct Answer: B) Nervous system