Your eyes remain the same size throughout your life
Eyes have over 2 million working parts in them
The human eye can differentiate approximately 10 million different colors
Brown eyes have blue eyes underneath them below a thin layer of pigment
It is impossible to sneeze with your eyes open
Eyebrows
Eyebrows serve the important purpose of keeping sweat and dirt out of our eyes
On average, we have about 250 eyebrow hairs per eyebrow
Eyebrow hair last about 4 months before falling out
Eyebrows grow faster in the hotter summer months
Ears
Without your ears, you would lose your balance
Ears are self-cleaning
Ears are connected to the nose and throat
Having two ears helps us identify which direction sounds are coming from
Tongue
The tongue is made up of 8 muscles
A tongue contains between 2,000 and 10,000 taste buds
Ears are connected to the nose and throat
Having two ears helps us identify which direction sounds are coming from
Mouth
The inside of your mouth contains as many bacteria as there are people on Earth
Children have 20 teeth while adults have 32
Your enamel is the hardest substance in your body
Your smile is as unique as your fingerprint
Nose
A person’s nose shape is formed by age 10
The nose is the first organ of the upper respiratory system
The nose cleans the air we breathe
Smell plays a key role in taste
Your nose shapes the sound of your voice
Lips
Your lips are 100 times more sensitive than your fingertips
Our lips get thinner as we get older
Lips can’t sweat
Arm
There are 24 different muscle in the arm
Your arm is made up of three bones: the upper arm bone (humerus) and two forearm bones (the ulna and the radius)
Legs
Running forms leg muscles faster and better than any other form of exercise since running uses ALL of the leg muscles
Upper leg muscles consist of hamstrings, quadriceps and adductors
The knee connects the upper leg and lower legs
The lower leg consists of five types of muscles -- gastrocnemius, soleus, plantaris, tibialis muscles and peroneus muscles
Hands
The hands (including the wrists) are the body part with the most bones – Each hand has 27 bones, and together they have 54 bones. That represents over 25% of the total amount of bones in the human body!
There are no actual muscles located in your fingers and thumbs
Your fingers and thumbs move by the action of almost 40 muscles in your forearm and hand
Feet
There are 26 bones in a foot. That’s one-quarter of all the bones found in your body
By the time a baby reaches the age of one, their feet have grown to almost half their adult size
More sensory nerve endings are found in the soles of your feet per square centimeter than any other part of your body
