Dictionary > Plasma volume

Plasma volume

The total volume of the blood plasma in the circulatory system
The blood is comprised of plasma and different cellular components. The various types of cells in the blood include the red blood cells, white blood cells, and platelets. These cells are suspended in the pale yellow liquid component of the blood called plasma. The plasma is the intravascular fluid comprised of water, dissolved proteins, glucose, clotting factors, electrolytes, hormones, and carbon dioxide.
Blood volume pertains to the volume of blood in the circulatory system. In general, the blood volume of an adult is about five liters. It is calculated by the formula: plasma volume / (1 – hematocrit). The plasma volume can be measured by indicator dilution techniques.
The blood plasma of an average human being is about 55% of the total blood volume of the body.1 A typical blood plasma volume in males is about 39 mL/kg of the body weight whereas in females it is about 40 mL/kg. A high blood plasma volume could indicate a disease in the liver and spleen or a vitamin C deficiency. Low plasma volume is observed in conditions such as shock, dehydration, and Addison’s disease.2
See also:


1 O’Neil, D. (1999). “Blood Components”. Palomar College. Retrieved from http://anthro.palomar.edu/blood/blood-components.htm

2 plasma volume. (n.d.) Mosby’s Medical Dictionary, 8th edition. (2009). Retrieved from http://medical-dictionary.thefreedictionary.com/plasma+volume

You will also like...

Cambial cells
Plant Tissues

Plant organs are comprised of tissues working together for a common function. The different types of plant tissues are m..

Human Neurology
Human Neurology

Human Neurology deals essentially with the nervous system of humans. It also features the various theories put forward b..

Ecological Research Measuring & Analysis
Ecological Research: Measuring & Analysis

This lesson is about the methods used for ecological research, such as quadrat and transect sampling, canopy fogging, an..

Endemic Flora of New Zealand
New Zealand’s Unique Flora

If New Zealand has lots of unique animals, it's also got a whole lot of unique plants. Find out more about some of them,..

Direct and indirect physiologic effects of growth hormone
Animal Growth Hormones

Hormones are produced in the endocrine glands of animals. The pituitary gland and hypothalamus are the most impor..

Golgi apparatus (3-D illustration)
Role of Golgi Apparatus & Endoplasmic Reticulum in Protein Synthesis

The endoplasmic reticulum and Golgi apparatus are the organelles involved in the translation step of protein synthesis a..