Bio Exam Practice Topic 9 Circulatory Systems

Front

What is the main function of the circulatory system?

Back

The main function of the circulatory system is to transport oxygen, nutrients, hormones, and waste products throughout the body.

Front

Define 'heart' in the context of the circulatory system.

Back

The heart is a muscular organ that pumps blood through the circulatory system, consisting of four chambers: two atria and two ventricles.

Front

What are the three main types of blood vessels?

Back

The three main types of blood vessels are arteries, veins, and capillaries.

Front

Explain the role of arteries in the circulatory system.

Back

Arteries carry oxygen-rich blood away from the heart to the tissues of the body.

Front

What is the function of veins?

Back

Veins carry oxygen-poor blood back to the heart.

Front

Describe the role of capillaries in the circulatory system.

Back

Capillaries are tiny blood vessels where the exchange of oxygen, carbon dioxide, nutrients, and waste occurs between blood and tissues.

Front

What is the significance of the pulmonary circulation?

Back

Pulmonary circulation is the part of the circulatory system that carries deoxygenated blood from the heart to the lungs and returns oxygenated blood back to the heart.

Front

Define 'systemic circulation'.

Back

Systemic circulation is the pathway in which oxygenated blood is distributed from the heart to the rest of the body and returns deoxygenated blood back to the heart.

Front

What is blood pressure?

Back

Blood pressure is the force exerted by circulating blood on the walls of blood vessels, typically measured in millimeters of mercury (mmHg).

Front

Explain the term 'cardiac cycle'.

Back

The cardiac cycle refers to the sequence of events that occur during one heartbeat, including contraction (systole) and relaxation (diastole) of the heart chambers.