Blood Structure: Viscosity and pH

Blood Structure Overview

This module covers blood structure over two weeks, focusing initially on red blood cells and plasma.

Characteristics of Blood

Whole blood is the red fluid found in the body. It is a viscous fluid, meaning it is thick, approximately four to five times thicker than water. This viscosity helps prevent damage to small blood vessels.

Blood pH

Blood is a slightly alkaline fluid with a pH range of between $7.35$ and $7.45$. The pH scale ranges from $0$ to $14$, with $7$ being neutral, below $7$ being acidic, and above $7$ being alkaline. Pure water has a pH of $7$. Blood's pH is just slightly above $7$, confirming its slight alkalinity. Individual blood pH values vary but must remain within the acceptable range of $7.35$ to $7.45$.