Bones
How many bones are typically found in an adult human skeleton?
206
Approximately how much blood does an average adult have?
About 5 liters
I'm only about the size of a pea, but I help control growth, metabolism, reproduction, and many other hormones. What am I?
Pituitary gland
On average, how much saliva does a person produce in one day?
1–1.5 liters
What organ pumps blood throughout your body?
heart
What is the longest bone in the human body?
Femur
How many times does the average adult breathe per minute at rest?
About 12–20 times
I'm shaped like a butterfly and live in your neck. I help control your body's metabolism. What am I?
Thyroid gland
Which part of your body contains the most bones?
Your hand - 27 bones in each hand
What is the largest organ of the human body?
Skin
What bone is commonly called the kneecap?
Patella
Approximately how long is the small intestine in an adult?
About 20 feet (6 meters)
I'm a tiny bone in your ear, and I'm the smallest bone in the human body. What am I?
Stapes
About how many times does your heart beat in an average lifetime?
About 2–3 billion times
What type of tissue connects muscles to bones?
Tendons
What is the smallest bone in the human body?
Stapes
Approximately how many nephrons are in each kidney?
About 1 million
I'm a body part you probably never think about, but I help you balance and coordinate your movements. What am I?
Cerebellum
If you stretched out all the blood vessels in an adult human body and put them end-to-end, approximately how far would they reach?
More than 60,000 miles - That's roughly enough to go around Earth more than twice
What organ is primarily responsible for filtering waste from the blood and producing urine?
Kidneys
Which bone is often called the “collarbone”?
Clavicle
Approximately how much blood does the heart pump in one minute while resting?
About 5 liters per minute
I'm a tiny structure in your brain that helps regulate your sleep-wake cycle by responding to light. What am I?
Suprachiasmatic nucleus
Which part of your body can actually shrink slightly throughout the day because of gravity?
Your spine - The discs between your vertebrae compress during the day, making you slightly shorter by evening.
What is the only bone in the human body that does not directly articulate with another bone?
Hyoid