5. Arteries, Capillaries and Veins Flashcards
Which type of blood vessel takes blood away from the heart?
Arteries
Which type of blood vessel returns blood to the heart?
Veins
In which type of blood vessel does material exchange take place?
Capillary
Which is the only artery to carry deoxygenated blood?
Pulmonary Artery
Which structure are present in veins to prevent backflow of blood?
Valves
Why do arteries have thick, elastic muscular walls?
Withstand high blood pressure
Excessive tissue fluid is removed via which system?
Lymphatic system
What happens when arterial smooth muscle contracts?
Vasoconstriction (reduced blood flow)
What happens when arterial smooth muscle relaxes?
Vasodilation (blood flow increases)
Which substance exit the blood and enter the tissue fluid?
Oxygen and Glucose
Which substance enter the blood from the tissue fluid?
Carbon Dioxide
What condition results from failure to drain lymph?
Oedema
