Skeletal System
Muscular System
Nervous System
Circulatory System
Digestive System
100

What is the name of the longest bone in the human body?

What is the femur?

100

What type of muscle is found in the heart?

What is cardiac muscle?

100

What is the control center of the nervous system?

What is the brain?

100

What organ pumps blood throughout the body?

What is the heart?

100

Where does digestion begin?

What is the mouth?

200

How many bones are in the adult human body?

What is 206?

200

What is the name of the muscle responsible for breathing?

What is the diaphragm?

200

What is the basic unit of the nervous system?

What is a neuron?

200

What type of blood vessels carry blood away from the heart?

What are arteries?

200

What organ produces bile?

What is the liver?

300

Which bone protects the brain?

What is the skull? (or cranium)?

300
Muscle are attached to bones by what connective tissue?

What are tendons?

300

What part of the brain controls balance and coordination?

What is the cerebellum?

300

What part of the blood carries oxygen?

What are red blood cells? (or hemoglobin)?

300

What is the main function of the small intestine?

What is nutrient absorption?

400

What type of joint is found in the shoulder and the hip?

What is a ball-and-socket joint?

400

What is the term for a muscle that opposes the action of another?

What is an antagonist?

400

What structure connects the brain to the spinal cord?

What is the brainstem?

400

Which chamber of the heart receives oxygenated blood from the lungs?

What is the left atrium?

400

What enzyme breaks down starches in the mouth?

What is amylase?

500

Which mineral is primarily stored in bones and essential for bone strength?

What is calcium?

500

What molecule provides energy for muscle contraction?

What is ATP (adenosine triphosphate)?

500

What insulating layer speeds up the nerve impulse transmission?

What is the myelin sheath?

500

What is the name of the largest artery in the body?

What is the aorta?

500

What structure prevents food from entering the windpipe?

What is the epiglottis?