1) What is the most common blood type? a) AB- (IV-) b) B- (III-) c) O+ (I+) 2) How much do fingernails grow per month? a) 0.75 mm b) 1.5 mm c) 3 mm 3) Where exactly is your heart? a) On the left of your chest b) In the middle of your chest c) In the middle of your chest, a bit to the left 4) How long are the human intestines? a) 3.5 m b) 8.5 m c) 13.5 m 5) How many bones do you have when you are born? a) 206 b) 300 c) 426 6) How many hairs are there on the human scalp? a) 90.000-150.000 b) 150.000-190.000 c) 190.000-250.000 7) What is the human body's biggest organ? a) liver b) brain c) skin 8) What is the average thickness of human skin? a) 1-2 mm b) 2-3 mm c) 3-4 mm 9) Where is the largest muscle in your body? a) in your bottom b) in your thigh c) in your jaw

How much do you know about the human body?

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