anatomy fun facts Flashcards
what bone can prove that humans once had tails but evolved
tailbone (coccyx)
what percent of bones are in feet
25%
what is the longest bone
femur
what and where is the smallest bone
stapes in the ear
what is the hardest part of the body
enamel teeth
how many muscles are in the body
600
what percent of body weight do muscles take up
40%
how many muscles does it take to smile
17
how many muscles does it take to frown
43
how many muscles does it take to stare
47
what is the largest muscle
gluteus maximus
what is the longest muscle
sartorius
how many lbs of force can jaw muscles provide for chewing
200 lbs
how much ATP does the body produce daily
70 kg
what percent of human dry weight comes from bacteria
10%
how long does it take nails to grow from base to tip
6 months
do fingernails or toenails grow faster
fingernails
how many strands of hair do people lose a day
40-100
how many hairs does the scalp have
100,000
do blondes or brunettes have more hair
blondes
how many ft of blood vessels are there in every inch of skin
20 ft
how much bacteria are on every square inch of the human body
32 million
how do fingerprints allow you to pick things up
they provide friction
how many particles are shedded every hour, how many pounds is that a year
600,000, 1.5 lbs a year