Important Facts about Human Body
Length of alimentary canal
|
Approximately 8 meters
|
BMR (Basal metabolic rate)
|
1600 K.cal/day
|
Number calls in body
|
75 trillion
|
Longest bone
|
Femur (thigh bone)
|
Smallest bone
|
Ear ossicle, stapes
|
Weight of brain
|
1400 gms
|
Blood volume
|
6.8 litres (in 70 kg body)
|
Normal B.P
|
120/80 mm Hg
|
Number of R.B.C
|
(a) In male: 4.5-5.0 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 days
|
D.L.C (Differential leucocyte count)
|
(a) Basophils-0.5-1%
(b) Eosinophils-1-3% (c) Monocytes-3-8% (d) Neutrophils-40-70% (e) Lymphocytes-2-25% |
Blood platelets count
|
2,00,000-4,00,000/cubic mm
|
Haemoglobin
|
(a) In male: 14-15.6 gm/100 c.c of blood
(b) In female: 11-14 gm/100 c.c of blood |
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 kg
|
Normal body temperature
|
98.4.F or 37.C
|
Breathing rate
|
16-20 minutes
|
Dental formula
|
adult:2123/2123=32
child: 2120/2120=22 milk teeth |
Number of cranial nerves
|
12 pairs
|
Number of spinal nerves
|
31 pairs
|
Largest endocrine gland
|
Thyroid
|
Gestation period
|
9 months (253-266 days)
|
Normal heart beat
|
72-75/ minutes
|
Largest gland
|
Liver
|
Largest muscles in the body
|
Gluteus maximus (Buttock muscle)
|
Largest smooth muscle
|
Uterus of pregnant women
|
Smallest muscles in the body
|
Stapedius
|
Largest artery
|
Abdominal aorta
|
Largest vein
|
Inferior venacava
|
Largest W.B.C
|
Monocyte
|
Smallest W.B.C
|
Lymphocyte
|
Greatest regeneration power
|
In liver
|
Longest nerve
|
Sciatic
|
Longest cell
|
Neuron (nerve cell)
|
Menstrual cycle
|
28 days
|
Menopause age
|
45-50 years
|
Minimum regeneration power
|
In brain cell
|
Minimum distance for proper vision
|
25 cm
|
Type of placenta
|
Haemochorial (Chorioallantoic)
|
Pulse rate
|
72/minute
|
Volume of semen
|
2-4 ml/ejaculation
|
Normal sperm count
|
200-350 million/ejaculation
|
ESR (normal Erythrocyte sedimentation rate)
|
4.10 min/hour
|
Thinnest skin
|
Conjunctiva
|
pH of gastric juice
|
1.4
|
pH of urine
|
6.0
|
pH of blood
|
7.35-7.45
|
