Exploring the Human Body Systems and Their Functions

How many bones are there in an adult human skeleton?

• 206 bones

• 320 bones

• 300 bones

• 100 bones

What is the primary function of the human brain?

• Controlling body movement

• Command center for the body

• Pumping blood

• Digesting food

Which vitamin is crucial for the health of the nervous system?

• Vitamin A

• Vitamin E

• Vitamin B1

• Vitamin D

What is the average heart rate of a healthy adult?

• 60-80 bpm

• 100-120 bpm

• 30-50 bpm

• 120-140 bpm

Which organ is responsible for the exchange of oxygen and carbon dioxide?

• Liver

• Lungs

• Heart

• Kidneys

What is the role of the diaphragm in the respiratory system?

• Filters air

• Secrete digestive enzymes

• Produces mucus

• Controls breathing movements

What is the main job of the large intestine?

• Absorb nutrients

• Produce bile

• Reabsorb water

• Secrete insulin

How long is the small intestine in an adult human?

• 5 feet

• 10 feet

• 25 feet

• 16 to 20 feet

What percentage of the human body's muscles are skeletal muscles?

• 50%

• 20%

• 40%

• 30%

Which system is responsible for body movements?

• Circulatory system

• Nervous system

• Skeletal muscle system

• Digestive system