Important facts about human body in pdf.it include longest bone in Human body is Femur,Smallest bone is Stapes,Largest artery is Abdominal Aorta,Largest vein is Inferior vena cava. for competitive exam like SSC, Railway, PSC, LIC, WBCS, NTPC etc.

important facts about human body


Largest, Longest, Strongest, Smallest Bone in Human Body
The longest bone in Human body is Femur (Thigh bone)
Smallest bone in human body is Stapes (Ear ossicle)
Length of spinal cord(Male) 45 cm(18 inch)
Length of spinal cord(Female) 43 cm(17 inch)
Number of bone present in man 206
Number in bone present in new born baby 305
Number of bone present in child 270

Largest, Longest, Strongest, Smallest Muscle in Human Body
Numbers of muscle present in human body 640
Largest muscle in human body Gluten muscle
Smallest muscle in human body Strapped muscle
Longest muscle of human body Sartorious mucle
Strongest(strength) Masseter located in jaw

Longest-heaviest-Busiest-Softest-Hardest organs in human body.
Longest organ in human body Liver
Heaviest organ in human body Liver(1.3 k.g or 3.5 pounds)
Weight of heart in human body 300 gm
Hardest part in human body Enamel of (Teeth)
Softest part in human body Brain
Busiest organ in human body Barin
Largest endocrine gland Thyroid

Largest Artery and vein in human body
Largest artery in human body Abdominal Aorta
Largest vein in human body Inferior vena cava

• Artery's are carry pure blood.
• Vein's are carry impure blood.
• Pulmonary Arteries carry impure blood from Heart.
• Pulmonary veins carry pure blood from the lungs to the heart.

Teeth: In an adult human 32 teeth are present.

Incisors: Incisors are sharp teeth used for cutting or shearing food. Number of incisor present in human is 8.
Canine: 4 canines are present in human.
Molar:12 molar teeth are present in human (including 4 wisdom teeth).
Pre molar: 8 pre molar teeth are present in human.


Normal Hemoglobin Ranges in Human Body
In Male 14-15.6 gm/100 c.c. Of blood
IN Female 11.5-13.5 gm/100 c.c of blood
New born 17-22 gm/dL
One week of age 17-22 gm/dL
One month of age 14-18 gm/dL

Normal Glucose Range in Human Body
When Fasting 70-100 mg/dL
2 Hours after Fasting 80-140 mg/dL

Normal Cholesterol Range inHuman body
LDL 100 mg/dL and above 159 mg/dL is consider high.
HDL 40-60 mg/dL

Total cholesterol should be below 200 mg/dL

Other Important Facts Of Human body
Length of alimentary canal Approximately 8 meters
BMR(Basal metabolic rate) 1600 K.cal/day
Number of cells in body 75 trillion
Weight of brain 1400 gm
Blood volume 6.8 liters(in 70 kg body)
Normal B.P 120/80 mm Hg(120 systolic and 80 diastolic)
Number of R.B.C (a)In male 4.5-5.million/cubic mm
(b)In female 4.0-4.5 million /cubic mm
Life span of R.B.C 120 days
Normal W.B.C count 5000-10000/cubic mm
Life span of W.B.C 3-4
D.L.C(Differential leukocyte count) (a)Basophils-0.5-1%
(b)Eosinophils-1-3%
(c)Monocytes-3-8%
(d)Neutrophils-40-70%
(e)Lymphocytes-2-25%
Largest W.B.C Monocyte
Smallest W.B.C Lymphocyte
Blood platelets count 200000-400000/cubic mm
Hb content in body 500-700 gm
Universal blood donor O Rh-ve
Universal blood recipient AB
Blood clotting time 2-5 minutes
Average body weight 70 k.g
Normal body temperature 98.4 F or 37 C
Breathing rate 16-20/minutes
Number of cranial nerves 12 pairs
Number of spinal nerves 31 pairs
Gestation period 9 month(253-280 days)
Menstrual cycle 28 days
Menopause age 45-50
Normal heart beat 72-75/minute
Normal pulse rate 72/minute
Greatest regeneration power Liver
Minimum regeneration power In brain cell
Minimum distance for proper vision 25 cm
Type of placenta Haemochorial
Volume of semen 2-4 ml/ejaculation
Normal sperm count 200-350 million/ejaculation
ESR(normal Erythrocyte sedimentation rate) 4.10 min/hour
Thinnest ski Conjunctive
PH of blood 7.4
PH of urine 6.0
PH of gastric juice 1.4


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