Question

Amount of oxygen supplied by 100 ml arterial blood, while passing through the tissues is?
A.0.4-0.6 ml
B.4 – 6ml
C.14 -15 ml
D.19 – 20 ml

Answer 1

Living organisms require oxygen for survival but it depends on the oxygen level in the blood through which the oxygen reaches the tissue of the organism. Oxygen has a high affinity of bonding with haemoglobin. Higher the bonding, higher the oxygen ( calculate oxygen content).

Complete answer:
Blood 100% saturated then it contains 15 haemoglobin (Hb).
Each gram of Hb carries 1.34 ml of O2.
I.e. 1 gm Hb= 1.34 ml O2.
Oxygen content (O2 content)
= 15 Hb × 1.34 O2.
= 20 ml.
Arterial blood is oxygenated hence 100 ml of arterial blood supplies 20 ml of oxygenated blood to the tissue while passing through the tissue.
Haemoglobin is the only source of transport of oxygen into various cells and tissues of the human body. When there is a decrease in haemoglobin there is a decrease in oxygen transport into the body. The clinical condition in which haemoglobin is decreased to the required level is called anaemia.
The normal haemoglobin level in male is 13 to 17 g/dl and in female it is 12 to 15 g/dl

Hence the correct answer is option(D)

Note: Hb, that is, Haemoglobin is present in the blood which comprises the haem group which is an iron group and globin is a protein that helps to transport oxygen to different parts of the by binding O2 i.e Hb-O2 bond. 100 ml of blood contains= 15 Hb .
The decrease in the partial pressure of oxygen = hypoxemia.
The decrease in oxygen levels= hypoxia.