Circulatory system Flashcards
(20 cards)
What are the two top chambers that receive blood called?
Atria (plural for atrium)
What do valves do?
Prevent back flow of blood
Which ventricle has a thicker wall?
Left
Why does it have a thicker wall?
To generate more pressure
Which blood vessel carries blood from the heart to the lungs?
Pulmonary artery
Which blood vessel carries blood from lungs to the left atrium?
Pulmonary vein
Which blood vessel caries blood from the heart to the head an the body?
Aorta
Which cells control the heart rate?
Pacemaker cells
which 3 structures will air pass through before reaching the alveoli?
Trachea, bronchi, bronchioles
What is the sheet of muscle below the lungs called?
Diaphragm
What is the fluid part of the blood called?
Plasma
What is the function of red blood cells?
To transport oxygen
What is the function of phagocytes?
To ingest pathogens
What is the function of lymphocytes?
To produce antibodies and antitoxins
What is the function of platelets?
Blood clotting
Which type of blood vessel carries blood away from the heart
Arteries
Which type of blood vessels have a wall only one cell thick to allow exchange
Capillaries
Which type of blood vessels have valves to prevent back flow at low pressure
Veins
Which type of blood vessels have walls with thick elastic fibres and smooth muscle with a narrow lumen?
Arteries
Which type of blood vessels have walls with thin elastic fibres, smooth muscle and a large lumen?
Veins
