red blood cells

Platelets

The nucleus is relatively big and tends to be indented or folded rather than multilobed. The cytoplasm contains large numbers of fine granules, which often appear to be more numerous near the cell membrane.

Nucleus. Red blood cells in mammals anucleate when mature, meaning that they lack a cell nucleus. In comparison, the red blood cells of other vertebrates have nuclei; the only known exceptions are salamanders of the genus Batrachoseps and fish of the genus Maurolicus.

DNA is encased in the nucleus of cells, and red blood cells do not have nuclei. However, white blood cells carry DNA in their nuclei.

Mature red blood cells, white blood cells, and platelets lie in a nearly colourless, protein-rich liquid called plasma.

Extracellular fluid, in biology, body fluid that is not contained in cells. It is found in blood, in lymph, in body cavities lined with serous (moisture-exuding) membrane, in the cavities and channels of the brain and spinal cord, and in muscular and other body tissues.

Plasma and interstitial fluid are the two components that make up at least 97% of the ECF. Lymph makes up a small percentage of the interstitial fluid. The remaining small portion of the ECF includes the transcellular fluid (about 2.5%).

The interstitial fluid (IF) is part of the extracellular fluid (ECF) between the cells. Extracellular fluid (ECF) surrounds all cells in the body. Extracellular fluid has two primary constituents: the fluid component of the blood (called plasma) and the interstitial fluid (IF) that surrounds all cells not in the blood.

Blood volume is typically about 5 L, whereas ECF volume is about 14 L. Thus blood comprises about 36% of the ECF volume.

It makes up about 26% of the total body water composition in humans. Intravascular fluid (blood plasma), interstitial fluid, lymph and transcellular fluid make up the extracellular fluid….Body fluid

• amniotic fluid.
• aqueous humour.
• bile.
• blood plasma.
• breast milk.
• cerebrospinal fluid.
• cerumen.
• chyle.