General
How many traditional senses does a human have?
5
Which of these structures contains no bones?
Nose
How much does the brain weigh?
3 pounds
Which organ is responsible for regulating the blood sugar level?
Pancreas
How many red blood cells are manufactured per second?
The human body manufactures 17 million red blood cells per second.
The average person has how many sweat glands?
2 million
How many bones are there in an adult human body?
206
What percentage of the body does the brain make up?
2%
Which organ makes urine?
Kidney
What are the order of white blood cells from greatest to least abundant?
The order of white blood cells from greatest to least abundant is neutrophil, lymphocyte, monocyte, eosinophil, and basophil.
What is the name of the substance that the body over-produces in an allergic reaction to pollen?
Histamine
How many bones are there in the human hand?
27
How many neurons are in the brain?
100 billion neurons
What do some types of white blood cells do?
Some types, such as neutrophils and monocytes, engulf and digest invading bacteria, fungi, and cellular debris.
What is the name of the structures in the intestine that increase surface area?
Villi
Which part of the human eye is the 'colored' section?
Iris
How long would it take to count all the neurons in the brain.
Over 3,000 years
What makes up blood tissue by volume?
Red blood cells make up about 40 to 45 percent of blood tissue by volume, while the remaining 55 percent is made up of plasma, the liquid component of blood.
What is the term to describe a lower than normal level of blood sugar?
Hypoglycemia
How do neurons communicate?
Chemical and electrical signals travel between neurons along tiny pathways, which is what allows you to think, see, move, dream, and laugh.
What is the most common blood cell?
Red blood cells are the most common cell in the blood, making up about 40 to 45 percent of its volume.