In humans, blood is an opaque red fluid, freely flowing but denser and more viscous than water. The characteristic colour is imparted by hemoglobin, a unique iron-containing protein. Hemoglobin brightens in colour when saturated with oxygen (oxyhemoglobin) and darkens when oxygen is removed (deoxyhemoglobin).
What are the 3 main characteristics of the blood?
Blood is a specialized body fluid. It has four main components: plasma, red blood cells, white blood cells, and platelets. Blood has many different functions, including: transporting oxygen and nutrients to the lungs and tissues.
What is a characteristic of whole blood?
Describe the composition and physical characteristics of whole blood. Sticky, opaque fluid with a metallic taste. Scarlet colored is oxygen rich and dark red is oxygen poor. More dense and viscous than water. Why is blood classified as a connective tissue.
What are characteristics of blood in terms of temperature?
Because of the formed elements and the plasma proteins and other solutes, blood is more viscous than water. It is also slightly alkaline, and its temperature is slightly higher than normal body temperature.
What does human blood contain?
Your blood is made up of liquid and solids. The liquid part, called plasma, is made of water, salts, and protein. Over half of your blood is plasma. The solid part of your blood contains red blood cells, white blood cells, and platelets.
Which blood type is most common?
The need for O+ is high because it is the most frequently occurring blood type (37% of the population). The universal red cell donor has Type O negative blood. The universal plasma donor has Type AB blood.
What are the 8 functions of blood?
Functions of the Blood: 8 Facts about Blood
- Blood Is Fluid Connective Tissue. …
- Blood Provides the Body’s Cells with Oxygen and Removes Carbon Dioxide. …
- Blood Transports Nutrients and Hormones. …
- Blood Regulates Body Temperature. …
- Platelets Clot Blood at Sites of Injury. …
- Blood Brings Waste Products to the Kidneys and Liver.
What color is the blood?
Human blood is red because hemoglobin, which is carried in the blood and functions to transport oxygen, is iron-rich and red in color. Octopuses and horseshoe crabs have blue blood. This is because the protein transporting oxygen in their blood, hemocyanin, is actually blue.
Which blood cells are responsible for fighting infections?
White blood cells (WBCs) fight infections from bacteria, viruses, fungi, and other pathogens (organisms that cause infection). One important type of WBC is the neutrophil.
What makes up the majority of blood?
The majority of blood volume consists of plasma. This aqueous solution is 92% water. It also contains blood plasma proteins, including serum albumin, blood-clotting factors, and immunoglobulins. Plasma circulates respiratory gases, dissolved nutrients, and other materials.
What are the 5 components of blood?
- Plasma. Plasma constitutes 55% of total blood volume. …
- White Blood Cells. There are between 6,000 and 8,000 white cells per cubic millimetre of blood. …
- Platelets. Platelets, or thrombocytes, are smaller than the red and white blood cells. …
- Red Blood Cells.
What are the two major components of blood?
Blood is classified as a connective tissue and consists of two main components:
- Plasma, which is a clear extracellular fluid.
- Formed elements, which are made up of the blood cells and platelets.
What are the 7 formed elements of blood?
- Erythrocytes (red blood cells) Erythrocytes, or red blood cells, are the most numerous of the formed elements. …
- Leukocytes (white blood cells) Leukocytes, or white blood cells, are generally larger than erythrocytes, but they are fewer in number. …
- Thrombocytes (platelets)
Who many blood is in human body?
adult will have approximately 1.2-1.5 gallons (or 10 units) of blood in their body. Blood is approximately 10% of an adult’s weight.
What organ in your body makes blood?
Blood cells are made in the bone marrow. The bone marrow is the soft, spongy material in the center of the bones. It produces about 95% of the body’s blood cells.
Why is blood so important?
Blood brings oxygen and nutrients to all the parts of the body so they can keep working. Blood carries carbon dioxide and other waste materials to the lungs, kidneys, and digestive system to be removed from the body. Blood also fights infections, and carries hormones around the body.