Bloodlab 1

Prepared by Abeer Alhabash

Overview of Blood • The primary function of blood is to

supply oxygen and nutrients as well as constitutional elements to tissues and to remove waste products.

• Blood also enables hormones and

other substances to be transported between tissues and organs.

• Problems with blood composition or circulation can lead to downstream tissue malfunction.

Prepared by Abeer Alhabash

Overview of Blood • Blood is also involved in

maintaining homeostasis by acting as a medium for transferring heat to the skin and by acting as a buffer system for bodily pH.

• The average adult has about five liters of blood living inside of their body

Prepared by Abeer Alhabash

• The blood is circulated through the lungs and body by the pumping action of the heart.

Prepared by Abeer Alhabash

Blood Composition

• Blood is a circulating tissue composed of fluid plasma and cells (red blood cells, white blood cells and platelets).

Prepared by Abeer Alhabash

Prepared by Abeer Alhabash

Blood Composition

Prepared by Abeer Alhabash

• Anatomically, blood is considered a connective tissue, due to its origin in the bones.

• Blood is the means and transport system of the body used in carrying elements (e.g. nutrition, waste, heat) from one location in the body to another, by way of blood vessels.

Prepared by Abeer Alhabash

• Plasma is made up of 90% water, 7-8% soluble proteins (albumin maintains bloods osmotic integrity, others clot, etc), 1% electrolytes. One percent of the plasma is salt, which helps with the pH of the blood

• The largest group of solutes in plasma contains three important proteins; albumins, globulins, and clotting proteins.

Prepared by Abeer Alhabash

Functions of Blood

Prepared by Abeer Alhabash

Functions of Blood

• 1 - Transportation: • oxygen and carbon dioxide • nutrients • waste products (metabolic wastes,

excessive water and ions)

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• 2 - Regulation - hormones and heat (to regulate body temperature).

• 3 - Protection - clotting mechanism protects against blood loss and leukocytes provide immunity against many disease-causing agents.

Functions of Blood

Prepared by Abeer Alhabash

When the human body loses a little bit of blood through a minor wound, the platelets cause the blood to clot so that the bleeding stops.

Because new blood is always being made inside of your bones, the body can replace the lost blood.

When the human body loses a lot of blood

through a major wound

That blood has to be replaced through a blood transfusion from other people.

Prepared by Abeer Alhabash

• But everybody's blood is not the same.

• There are four different blood types.

• Plus, your blood has Rh factors which make it even more unique.

Prepared by Abeer Alhabash