Human body 1
What percentage of the human body is water?
About 60% of the human body is composed of water.
Which organ in the human body is responsible for producing insulin?
The pancreas produces insulin to regulate blood sugar levels.
What is the most common cause of blindness worldwide?
Cataracts are the most common cause of blindness globally.
What is the medical term for low blood sugar?
Hypoglycemia is the medical term for low blood sugar.
What is the average lifespan of a red blood cell?
The average lifespan of a red blood cell is about 120 days.
How many taste buds does the average human tongue have?
The average human tongue has around 10,000 taste buds.
How many times does the human heartbeat per day on average?
The human heart beats around 100,000 times per day.
Which vitamin is essential for blood clotting?
Vitamin K is essential for proper blood clotting.
Which vitamin is known as the “sunshine vitamin”?
Vitamin D is known as the “sunshine vitamin” because it can be produced by the body when exposed to sunlight.
True or false: The human body has over 100 trillion cells.
True. The human body is estimated to have around 37.2 trillion cells.
Which vitamin helps with calcium absorption and bone health?
Vitamin D aids in calcium absorption and maintains bone health.
What is the hardest substance in the human body?
Tooth enamel is the hardest substance in the human body.
How many bones are babies born with?
Babies are born with around 300 bones, which later fuse to form 206 bones in adults.
True or false: The human body has only one type of hair.
False. The human body has two types of hair: vellus and terminal.
Which vitamin is essential for the absorption of iron?
Vitamin C helps with the absorption of iron in the body.
True or false: The human brain continues to grow throughout life.
False. The human brain stops growing around age 18.
Which muscle in the human body is the strongest relative to its size?
The masseter, or jaw muscle, is the strongest relative to its size.
What percentage of the human brain is composed of fat?
About 60% of the human brain is composed of fat.
Which is the largest organ in the human body?
The skin is the largest organ in the human body.
Which is the longest bone in the human body?
The femur, or thigh bone, is the longest bone in the human body.
What is the most common blood type?
The most common blood type is O+.
True or false: The human body has four lungs.
False. The human body has two lungs.
True or false: The human body has over 600 muscles.
True. The human body has over 600 muscles.
True or false: The human body produces vitamin C.
False. The human body cannot produce vitamin C and must obtain it through diet.
True or false: The human body can store vitamin D.
True. The human body can store vitamin D in fat tissues.