The Skeletal & Muscular Systems
What is the name of the bone that protects your brain?
The Skull (Cranium)
Which organ pumps blood throughout your entire body?
The Heart
What is the main control center (the "boss") of the nervous system?
The Brain
Which long tube moves food from your mouth to your stomach?
Esophagus
What is the largest organ of the human body?
Skin
How many bones does an average adult human have?
206
These tiny air sacs in the lungs are where oxygen enters the blood.
Alveoli
Which part of the brain is responsible for balance and coordination?
Cerebellum
This organ produces bile to help break down fats.
Liver
What is the only human muscle that never gets tired?
The Heart
What do you call the tissue that connects two bones together at a joint?
Ligament
Which type of blood vessel carries blood away from the heart?
Arteries
What are the specialized cells that send electrical signals called?
Neurons
Most of the nutrient absorption happens in which organ?
Small Intestine
True or False: Humans are born with more bones than they have as adults.
True (Babies have about 300; they fuse as they grow)
Where is the smallest bone in the human body located?
The Middle Ear (The Stapes/Stirrup)
What is the name of the protein in red blood cells that carries oxygen?
Hemoglobin
What do you call an automatic, involuntary response to a stimulus?
Reflex
These bean-shaped organs filter waste and extra water from your blood.
Kidneys
What is the strongest muscle in the human body (based on its weight)?
The Masseter (Jaw muscle)
What is the flexible, rubbery tissue found in your nose, ears, and joints?
Cartilage
Which chamber of the heart pumps oxygenated blood out to the rest of the body?
Left Ventricle
This "system" includes your skin, hair, and nails.
Integumentary System
What are the wave-like muscle contractions that move food through the digestive tract?
Peristalsis
Humans share about 50% of their DNA with which yellow fruit?
Banana