circulatory and lymph

Front

What is the primary function of the circulatory system?

Back

The primary function of the circulatory system is to transport blood, nutrients, oxygen, carbon dioxide, hormones, and waste products throughout the body.

Front

What is lymph and its role in the body?

Back

Lymph is a clear fluid that circulates through the lymphatic system, helping to remove waste and toxins from tissues, and plays a crucial role in immune function.

Front

What is vasoconstriction?

Back

Vasoconstriction is the contraction of the smooth muscle in the walls of blood vessels, which decreases their diameter and increases blood pressure.

Front

What is vasodilation?

Back

Vasodilation is the relaxation of blood vessel walls, leading to an increase in their diameter and a decrease in blood pressure.

Front

What percentage of blood volume is made up of plasma?

Back

Approximately 50 to 60 percent of blood volume is made up of plasma.

Front

What are capillaries and their function?

Back

Capillaries are the smallest blood vessels that connect arterioles and venules, facilitating the exchange of oxygen, carbon dioxide, nutrients, and waste between blood and tissues.

Front

What is the thoracic duct?

Back

The thoracic duct is the largest lymphatic vessel in the body, responsible for draining lymph from the left side of the head, neck, chest, abdomen, and both legs into the bloodstream.

Front

What is the difference between arteries and veins?

Back

Arteries carry oxygenated blood away from the heart to the body, while veins carry deoxygenated blood back to the heart.

Front

What are the components of blood?

Back

Blood is composed of red blood cells, white blood cells, platelets, and plasma.

Front

What is the role of lymph nodes?

Back

Lymph nodes filter lymph fluid and are key components of the immune system, helping to identify and fight infections.