QS Study

The composition of Menstrual Blood

Menstruation blood is the blood that flows during a woman’s periods. It is the normal release of blood and mucosal tissue from the internal lining of the uterus through the vagina. Menstrual cycle means the monthly rhythmic changes in the rates of secretion of female hormones and corresponding changes in the ovaries and sexual organs. Menstrual blood is dissimilar from normal blood due to its composition and its physical properties.

Menstrual blood is not composed of blood only. There are three qualitative components found in menstrual blood

  • Blood – It is the major element of what is collectively called menstruation blood or menstruum.
  • Endometrium – As part of usual menstruation, the endometrium is shed from. The shed endometrium is mostly made of cells and their fibrous maintain.
  • The unfertilized egg – The third part in the menstruum is the unfertilized egg. It is certainly insignificant with value to its volume when compared to the blood or the shed endometrium.

Major Composition:

(a) Unclotted blood (75% is of arterial origin 25% is of venous origin)

(b) Tissue debris,

(c) Unfertilized ovum,

(d) Damaged gland of the uterus,

(e) Damaged capillaries,

(f) Plasmin (fibrinolysin prevents clotting),

(g) Mucous,

(h) Glycogen,

(i) Bacteria,

(j) Prostaglandins.

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