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52 Amazing facts about Human body

Human Organ Systems


Organ systems are groups of organs within the body that can be thought of as working together as a unit to carry out specific tasks or functions within the body. The human body is most commonly divided into eleven organ systems, the ones listed below.

It should be kept in mind that these divisions are somewhat arbitrary as to which organs are included and which are excluded. Skeletal muscles attached to bones are part of the muscular system, but the smooth muscles around soft tissues are not. Skeletal muscles are attached to bones, and serve to move the bones, but bones are part of the skeletal system, not the muscular system.

HUMAN BODY AMAZING FACTS.


1: Number of bones: 206
2: Number of muscles: 639
3: Number of kidneys: 2
4: Number of milk teeth: 20
5: Number of ribs: 24 (12 pair)
6: Heart chamber number: 4
7: Largest artery: Aorta
8: Normal blood pressure: 120/80 Mmhg
9: Blood Ph: 7.4
10: Number of vertebrae in spinal column: 33
11: Number of vertebrae in the neck: 7
12: Number of bones in middle ear: 6
13: Number of bones in face: 14
14: Number of bones in skull: 22
15: Number of bones in chest: 25
16: Number of bones in arms: 6
17: Number of muscles in the human arm: 72
18: Number of pumps in the heart: 2
19: Largest organ: Skin
20: Largest gland: Liver
21: Largest cell: female ovum
22: Smallest cell: Sperm
23: Smallest bone: Stapes middle ear
24: First transplanted organ: Kidney
25: Average length of small intestine: 7m
26: Average length of large intestine: 1.5 m
27: Average weight of newborn baby: 3 kg
28: Pulse rate in one minute: 72 times
29: Normal body temperature: 37 C ° (98.4 f °)
30: Average blood volume: 4 to 5 LITERS
31: LIFETIME Red blood cells: 120 days
32: LIFETIME White blood cells: 10 to 15 days
33: Pregnancy period: 280 days (40 weeks)
34: Number of bones in human foot: 33
35: Number of bones in each wrist: 8
36: Number of bones in hand: 27
37: Largest endocrine gland: Thyroid
38: Largest lymphatic organ: Spleen
40: Largest and strongest bone: Femur
41: Smallest muscle: Stapedius (middle ear)
41: Chromosome number: 46 (23 pair)
42: Number of newborn baby bones: 306
43: Blood viscosity: 4.5 to 5.5
44: Universal donor blood group: O
45: Universal recipient blood group: AB
46: Largest white blood cell: Monocyte
47: Smallest white blood cell: Lymphocyte
48: The increased red blood cell count is called: Polycythemia
49: Blood bank in the body is: Spleen
50: River of Life is called: Blood
51: Normal blood cholesterol level: 100 mg / dl
52: Fluid part of blood is: Plasma

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