Plasma

Definition

Plasma is the yellowish, liquid component of blood that makes up about 55% of its volume. It serves as a medium for transporting nutrients, hormones, and waste products throughout the body.

5 Must Know Facts For Your Next Test

1. Plasma is composed of approximately 90-92% water.
2. It contains dissolved proteins such as albumin, globulins, and fibrinogen.
3. Plasma helps maintain blood pressure and regulates body temperature.
4. It plays a crucial role in the immune response by transporting antibodies.
5. Plasma facilitates the transport of glucose, electrolytes, and waste products like carbon dioxide.

Review Questions

• What percentage of blood volume is made up by plasma?
• Name three types of proteins found in plasma.
• How does plasma contribute to the immune system?

Related terms

Red Blood Cells: Red blood cells are responsible for carrying oxygen from the lungs to the rest of the body.

White Blood Cells: White blood cells are part of the immune system and help fight off infections.

Platelets:

Platelets are cell fragments that play an essential role in blood clotting.