The Heart And Blood Vessels

Question 1

Circulatory system

Answer 1

The process of circulating blood around the body by relaxing and contacting
-transports oxygen, carbon dioxide, nutrient an hormones to and from cells around the body
-removes waste products
-consists of the heart, blood and, blood vessels

Question 2

Double circulatory system

Answer 2

More efficient as the deoxygenated blood and oxygenated blood can be transported separately
-the pulmonary circuit carries blood to the lungs to be oxygenated and the back to the heart
-the systemic circuit carries blood around the body to deliver oxygen and returns deoxygenated blood to the heart

Question 3

Blood vessels; arteries

Answer 3

Carry oxygenated blood at a high pressure; thick elastic tissue walls

Question 4

Blood vessels; Veins

Answer 4

Carry deoxygenated blood at lower pressure, valves stop blood flow

Question 5

Blood vessels; Capillaries

Answer 5

Have thin walls that allow exchange compounds

Question 6

Structure of the heart

Answer 6

Mammals and birds have 4 chambered hearts
-left side = oxygenated blood
-right side = deoxygenated blood

Question 7

Aorta

Answer 7

the largest artery, it is thick and elastic to withstand high pressure to carry oxygenated blood away from the heart

Question 8

Vena cava

Answer 8

Transport’s deoxygenated blood to the heart, made up of superior and inferior vena cava

Question 9

Two chambers- atria and ventricles (left and right)

Answer 9

Ventricles - have thicker muscular walls as blood is forced out of the heart at high pressure around the body
Atria - receives the blood while relaxed (diastole)
Left side- pumps blood around the body
Right side - pumps blood to the lungs

Question 10

Heart valves

Answer 10

Atrioventricular - valves between chambers
Semilunar valves - base of blood vessels