Function of the Cardiovascular System

What is one of the key functions of the cardiovascular system?

• Delivering oxygen and nutrients

• Producing hormones

• Digesting food

• Absorbing vitamins

During exercise, the body needs more _________.

• oxygen and nutrients

• carbon dioxide

• lactic acid

• fat reserves

What happens when the cardiovascular system can no longer meet the demands during exercise?

• Muscle growth

• Muscles fatigue

• Increased energy

• Improved performance

The cardiovascular system is responsible for the distribution and redistribution of ________ within the body to maintain thermal balance during exercise.

• heat

• oxygen

• nutrients

• hormones

What controls and distributes heat around the body?

• Vasodilation and vasoconstriction

• Heart rate

• Blood pressure

• Muscle contractions

What is the primary location where white blood cells are produced?

• Bone marrow

• Liver

• Spleen

• Thymus

How are white blood cells transported around the body?

• Through the bloodstream

• Via the nervous system

• Through the digestive tract

• Via the lymphatic system

What do white blood cells produce to destroy pathogens?

• antibodies

• hormones

• enzymes

• toxins

What forms a plug at the site of damage in a blood vessel?

• Platelets

• Red blood cells

• White blood cells

• Plasma

What is the role of plasma components known as coagulation factors?

• They help in the process of blood clotting.

• They transport oxygen throughout the body.

• They are responsible for fighting infections.

• They regulate blood pressure.