Tag: circulatory system - blood

It is a standard physiological constant that 1 gram of pure haemoglobin can bind approximately 1.34 mL of oxygen when fully saturated.

(b) To maintain electrostatic neutrality of plasma, many chloride ions diffuse from plasma into RBCs and bicarbonate ions pass out. The chloride content of RBCs increase when oxygenated blood become deoxygenated. This is termed as chloride shift or Hamburger phenomenon.

While plasma carries some dissolved oxygen, the vast majority of oxygen transport in the body is carried by the blood, specifically within the red blood cells via haemoglobin.

Anaemia is defined as a condition marked by a deficiency of red blood cells or of haemoglobin in the blood, resulting in reduced oxygen transport capacity.

Haemoglobin synthesis begins during the early stages of erythropoiesis. It is first detectable in the intermediate normoblast stage.

Nerve impulses, heart pacemakers, and muscular movement via ATP are correct associations. Monocytes are white blood cells involved in phagocytosis and do not contain haemoglobin.

The normal range for haemoglobin in a healthy adult male is typically between 13.5 and 17.5 g/100 mL, making 14-15 g/100 mL the correct representative value.

Haemoglobin is an oligomeric protein (composed of four subunits) and a chromoprotein (due to the iron-containing haem group). It is not monomeric, nor is it keratin.

(d) One molecule of the haemoglobin has 4 haem groups and each of them is capable of taking up one molecule of $O _2$ .

Haemoglobin is the primary protein in red blood cells responsible for binding and transporting oxygen throughout the human body.