Unusual Facts About Human Body Part I
Unusual Facts About Human Body Part I
Image source: "Eye-diagram no circles border" by Chabacano - References: [1] [2] [3] among others. Licensed under CC BY-SA 3.0 via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:Eye-diagram_no_circles_border.svg#/media/File:Eye-diagram_no_circles_border.svg
1. vitreous body 2. ora serrata 3. ciliary muscle 4. ciliary zonules 5. Schlemm's canal 6. pupil 7. anterior chamber 8. cornea 9. iris 10. lens cortex 11. lens nucleus 12. ciliary process 13. conjunctiva 14. inferior oblique muscle 15. inferior rectus muscle 16. medial rectus muscle 17. retinal arteries and veins 18. optic disc 19. dura mater 20. central retinal artery 21. central retinal vein 22. optic nerve 23. vorticose vein 24. bulbar sheath 25. macula 26. fovea 27. sclera 28. choroid 29. superior rectus muscle 30. retina
1. The fingertips hold 2,000 pores per square inch.
1. vitreous body 2. ora serrata 3. ciliary muscle 4. ciliary zonules 5. Schlemm's canal 6. pupil 7. anterior chamber 8. cornea 9. iris 10. lens cortex 11. lens nucleus 12. ciliary process 13. conjunctiva 14. inferior oblique muscle 15. inferior rectus muscle 16. medial rectus muscle 17. retinal arteries and veins 18. optic disc 19. dura mater 20. central retinal artery 21. central retinal vein 22. optic nerve 23. vorticose vein 24. bulbar sheath 25. macula 26. fovea 27. sclera 28. choroid 29. superior rectus muscle 30. retina
2. The skin weighs about six pounds, is the largest single organ of the body and is only about 1/20th of an inch thick.
3. The human being perspires constantly between one and two pints a day.
4. The eyes receive approximately 90 per cent of all our information, making us basically visual creatures.
5. The eye blinks once every two-to-ten seconds, a bathing and lubricating function. Once calculated, this causes our eyes to be closed half an hour out of each day.
6. Tears contain an antiseptic agent that aids in defense against disease.
7. The human being is, as far as we know, the only animal that weeps as a result of emotional distress.
8. The ears can discriminate some 1,600 different frequencies.
9. The body takes in about a pint of air with each relaxed breath which is around 14 per minute.
10. The bulk of lung tissue is composed of about 300 million microscopic air sacs known as alveoli.
11. Blood journeys endlessly through 60,000 miles of blood vessels out from the heart and back in less than a minute.
12. The heart usually beats 70 times a minute and pumps 2,000 gallons of blood a day.
13. The heart is the size of a “fist” and weighs less than a pound.
14. The stomach in normal digestion produces hydrochloric acid strong enough to burn a hole in a rug.
15. Muscles can do only one thing: contract. Yet, they allow us a wide variety of motion.
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