pH of Blood is-
pH of Blood is-
The correct option is B 7.4
An explanation of the correct option
Option is B:
The normal blood pH of a healthy person ranges from 7.35 to 7.45. It is slightly basic.
Our body maintains the normal pH by acid-base balance. It is important to maintain homeostasis.There are various factors that regulate blood pH. The pH of blood plasma depends on CO2, electrolyte and weak acid concentrations. The two main organs that regulate blood pH are:
- Lungs- They help in the gaseous exchange and remove CO2. The brain regulates the breathing process so the brain and the lungs maintain blood pH by regulating the speed and intensity of breathing.
- Kidney- They maintain pH balance through excretion. They remove the excess acid or bases present in the blood.
So, our body maintains pH balance through respiration, excretion and other metabolic activities. Any change in blood pH, i.e acidosis or alkalosis is due to impaired function of these organs.
An explanation of the incorrect options
Option A:
pH of human blood cannot be 6.4 as it would become acidic (Acidosis).
There are various causes for acidosis and it is more prevalent than alkalosis. The main reasons for acidosis include:
- Ketoacidosis in diabetes.
- Metabolic acidosis due to kidney diseases or failure.
- Respiratory acidosis due to lungs diseases such as pneumonia, bronchitis, asthma, chronic pulmonary diseases.
Option C:
pH of human blood cannot be 4.7 as it would become very acidic (Acidosis).
Such change in the blood pH may be due to various diseases such as diabetes, poisoning, infection, heart, lung or kidney diseases.
Option D:
pH of human blood cannot be 5.2 as it would become acidic (Acidosis).
Metabolic acidosis: This occurs due to reduced bicarbonate or increased acid levels.
Respiratory acidosis: This occurs when the body removes less carbon dioxide than usual.
Final Answer: Hence, correct option is (B), pH of Blood is 7.4.
7.4
An explanation of the correct option
Option is B:
The normal blood pH of a healthy person ranges from 7.35 to 7.45. It is slightly basic.
Our body maintains the normal pH by acid-base balance. It is important to maintain homeostasis.There are various factors that regulate blood pH. The pH of blood plasma depends on CO2, electrolyte and weak acid concentrations. The two main organs that regulate blood pH are:
- Lungs- They help in the gaseous exchange and remove CO2. The brain regulates the breathing process so the brain and the lungs maintain blood pH by regulating the speed and intensity of breathing.
- Kidney- They maintain pH balance through excretion. They remove the excess acid or bases present in the blood.
So, our body maintains pH balance through respiration, excretion and other metabolic activities. Any change in blood pH, i.e acidosis or alkalosis is due to impaired function of these organs.
An explanation of the incorrect options
Option A:
pH of human blood cannot be 6.4 as it would become acidic (Acidosis).
There are various causes for acidosis and it is more prevalent than alkalosis. The main reasons for acidosis include:
- Ketoacidosis in diabetes.
- Metabolic acidosis due to kidney diseases or failure.
- Respiratory acidosis due to lungs diseases such as pneumonia, bronchitis, asthma, chronic pulmonary diseases.
Option C:
pH of human blood cannot be 4.7 as it would become very acidic (Acidosis).
Such change in the blood pH may be due to various diseases such as diabetes, poisoning, infection, heart, lung or kidney diseases.
Option D:
pH of human blood cannot be 5.2 as it would become acidic (Acidosis).
Metabolic acidosis: This occurs due to reduced bicarbonate or increased acid levels.
Respiratory acidosis: This occurs when the body removes less carbon dioxide than usual.
Final Answer: Hence, correct option is (B), pH of Blood is 7.4.
