Most Important Questions on Human Body System for Competitive Exams // Sainik School Entrance Exam // KV // Navodaya Vidyalaya // RIMC
A hug or kiss between mother and baby induces the secretion of which hormone - oxytocin
About how much urine is produced in the human body every day - about 1 to 1.5 liters
Blind dot or yellow dot are found in which part of the eye - Retina
How long does it take to circulate blood in the human body - 23 seconds
How many bones are there in an adult human - 206
How many cells are there in the heart of a human being - 4
How many layers of skin are there in the epidermis- 5
How many times does a human heart beat ? 72 times/ minute
Krebs cycle occurs in which organ - Mitochondria
The exchange of gases in the lungs is done by whom - by Blood
The level of glucose in the blood is expressed in – in milligrams per decilitre
The number of RBCs is more in mountain dwellers, because - the air on the mountain is less condensed
Urea is produced in which organ in the human body - Liver
What causes urine to smell - Due to urea
What is omnivorous blood group- AB+
What is the amount of blood in a human being - about 5-6 liters
What is the amount of blood of the body weight - 7%
What is the amount of water in the human body-about 60%
What is the average pH value of a normal person's blood - 7.35 - 7.45PH
What is the largest part of the body - skin
What is the life span of white blood Cell (WBC) - 2 to 4 days
What is the name of the largest cell of the human body - Nervous System
What is the number of amino acids in the human body- 20
What is the number of chromosomes in the human body - 46 (23 pairs)
What is the pH value of human urine?- 6.0
What is the process of purification of blood in the human body called - dialysis
What is the respiratory rate of a healthy human being - 16 to 18 times per minute
What is the shape of DNA called - Double Helix
What is the study of the beauty of man called - Kelology
What is the weight of the human brain - 1350 to 1400 grams
What kind of ties are the bones of our skull interconnected by - Fixed joint
Where is the bone called tibia found in the human body- feet
Where is the strongest bone in the human body- Jaw bone
Where is vitamin A stored in the human body - Liver
Where red blood cells (RBC) are mainly formed -in the Bone marrow
Which is the blood pressure measuring instrument –Sphygmomanometer
Which is the enzyme found in saliva- Tylene
Which is the hardest substance in the human body?- Teeth
Which is the heaviest organ of the human – Liver
Which is the largest internal organ of the human body - Liver
Which is the largest part of the human brain-Ceribrum
Which is the longest bone in the human body? – The Femur
Which is the most toxic excretory substance- Ammonia
Which is the organ that purifies blood - Kidney
Which is the weakest bone in the human body? -clavicle or collar bone
Which structure of the eye is the most sensitive but does not contain blood vessels- cornea
Who was the discoverer of blood groups? - Carl Landsteiner
About how much urine is produced in the human body every day - about 1 to 1.5 liters
Blind dot or yellow dot are found in which part of the eye - Retina
How long does it take to circulate blood in the human body - 23 seconds
How many bones are there in an adult human - 206
How many cells are there in the heart of a human being - 4
How many layers of skin are there in the epidermis- 5
How many times does a human heart beat ? 72 times/ minute
Krebs cycle occurs in which organ - Mitochondria
The exchange of gases in the lungs is done by whom - by Blood
The level of glucose in the blood is expressed in – in milligrams per decilitre
The number of RBCs is more in mountain dwellers, because - the air on the mountain is less condensed
Urea is produced in which organ in the human body - Liver
What causes urine to smell - Due to urea
What is omnivorous blood group- AB+
What is the amount of blood in a human being - about 5-6 liters
What is the amount of blood of the body weight - 7%
What is the amount of water in the human body-about 60%
What is the average pH value of a normal person's blood - 7.35 - 7.45PH
What is the largest part of the body - skin
What is the life span of white blood Cell (WBC) - 2 to 4 days
What is the name of the largest cell of the human body - Nervous System
What is the number of amino acids in the human body- 20
What is the number of chromosomes in the human body - 46 (23 pairs)
What is the pH value of human urine?- 6.0
What is the process of purification of blood in the human body called - dialysis
What is the respiratory rate of a healthy human being - 16 to 18 times per minute
What is the shape of DNA called - Double Helix
What is the study of the beauty of man called - Kelology
What is the weight of the human brain - 1350 to 1400 grams
What kind of ties are the bones of our skull interconnected by - Fixed joint
Where is the bone called tibia found in the human body- feet
Where is the strongest bone in the human body- Jaw bone
Where is vitamin A stored in the human body - Liver
Where red blood cells (RBC) are mainly formed -in the Bone marrow
Which is the blood pressure measuring instrument –Sphygmomanometer
Which is the enzyme found in saliva- Tylene
Which is the hardest substance in the human body?- Teeth
Which is the heaviest organ of the human – Liver
Which is the largest internal organ of the human body - Liver
Which is the largest part of the human brain-Ceribrum
Which is the longest bone in the human body? – The Femur
Which is the most toxic excretory substance- Ammonia
Which is the organ that purifies blood - Kidney
Which is the weakest bone in the human body? -clavicle or collar bone
Which structure of the eye is the most sensitive but does not contain blood vessels- cornea
Who was the discoverer of blood groups? - Carl Landsteiner
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