Digestive System
What is the main function of the digestive system?
A) To pump blood throughout the body
B) To break down food and absorb nutrients
C) To carry oxygen to cells
D) To control body movements
B) To break down food and absorb nutrients
What is the main function of the circulatory system?
A) To break down food
B) To transport blood, oxygen, and nutrients throughout the body
C) To filter waste from the blood
D) To control body movements
B) To transport blood, oxygen, and nutrients throughout the body
What is the main function of the respiratory system?
A) To digest food
B) To exchange oxygen and carbon dioxide
C) To pump blood
D) To filter waste
B) To exchange oxygen and carbon dioxide
What is the main function of the nervous system?
A) To break down food
B) To pump blood throughout the body
C) To receive, process, and send signals throughout the body
D) To produce hormones
C) To receive, process, and send signals throughout the body
1. What is the primary function of the skeletal system?
A) To digest food
B) To provide structure, support, and protection for the body
C) To pump blood
D) To filter waste
B) To provide structure, support, and protection for the body
2. Which organ is responsible for breaking down food mechanically and chemically?
A) Stomach
B) Small intestine
C) Mouth
D) Liver
C) Mouth
Which organ pumps blood throughout the body?
A) Brain
B) Lungs
C) Heart
D) Liver
C) Heart
Which organs are the primary sites of gas exchange in the respiratory system?
A) Trachea
B) Bronchi
C) Alveoli in the lungs
D) Diaphragm
C) Alveoli in the lungs
Which two parts make up the central nervous system?
A) Heart and lungs
B) Brain and spinal cord
C) Nerves and ganglia
D) Sensory and motor neurons
B) Brain and spinal cord
How many bones does an adult human body typically have?
A) 150
B) 206
C) 300
D) 400
B) 206
Where does most nutrient absorption occur in the digestive system?
A) Mouth
B) Stomach
C) Small intestine
D) Large intestine
C) Small intestine
What do arteries carry?
A) Oxygen-poor blood back to the heart
B) Oxygen-rich blood away from the heart
C) Lymph fluid
D) Digestive enzymes
B) Oxygen-rich blood away from the heart
What does the diaphragm do?
A) Filters air before it enters the lungs
B) Contracts and relaxes to help move air in and out of the lungs
C) Produces mucus to trap dust
D) Transports oxygen through the bloodstream
B) Contracts and relaxes to help move air in and out of the lungs
What do sensory neurons do?
A) Control muscle movements
B) Send signals from the brain to muscles
C) Carry information from the senses to the brain
D) Produce neurotransmitters
C) Carry information from the senses to the brain
What is the function of joints in the skeletal system?
A) To store calcium
B) To allow bones to move and bend
C) To produce red blood cells
D) To protect organs
B) To allow bones to move and bend
What is the role of saliva in digestion?
A) It breaks down fats
B) It begins to break down starches and moistens food
C) It absorbs nutrients
D) It stores bile
B) It begins to break down starches and moistens food
What is the purpose of veins in the circulatory system?
A) To carry oxygen-rich blood away from the heart
B) To carry oxygen-poor blood back to the heart
C) To filter waste products
D) To produce red blood cells
B) To carry oxygen-poor blood back to the heart
4. What gas do we breathe in that our cells need?
A) Carbon dioxide
B) Nitrogen
C) Oxygen
D) Helium
C) Oxygen
What is the function of the spinal cord?
A) To pump blood
B) To relay messages between the brain and the rest of the body
C) To digest food
D) To filter waste
B) To relay messages between the brain and the rest of the body
Which of the following is a function of bones?
A) Protecting internal organs like the brain and heart
B) Producing red blood cells
C) Storing minerals like calcium and phosphorus
D) All of the above
D) All of the above
What does the large intestine primarily do?
A) Breaks down proteins
B) Absorbs water and forms solid waste
C) Produces insulin
D) Stores bile
B) Absorbs water and forms solid waste
How many chambers does the human heart have?
A) 2
B) 3
C) 4
D) 6
C) 4
What is the trachea commonly called?
A) Windpipe
B) Esophagus
C) Bronchus
D) Larynx
A) Windpipe
W
hat is a reflex?
A) A conscious decision made by the brain
B) A slow response to a stimulus
C) An automatic, quick response to a stimulus without thinking
D) A hormone released by the nervous system
C) An automatic, quick response to a stimulus without thinking
What connects bones to other bones?
A) Tendons
B) Ligaments
C) Cartilage
D) Muscles
B) Ligaments