Grade 10 Seton Biology Test 3 ACTUAL
QUESTIONS AND CORRECT ANSWERS
What is the purpose of the atria? - CORRECT ANSWERS✅✅The atria collect blood that
enters the heart and continuously pump it to the ventricles. The blood that enters the right
atrium lacks oxygen and is called deoxygenated blood. The blood that enters the left atrium is
rich in oxygen and is called oxygenated blood
What is the purpose of the ventricles? - CORRECT ANSWERS✅✅The ventricles are
responsible for pumping blood throughout out body through vessels known as arteries.
Name the four valves of the heart and describe their purpose. - CORRECT
ANSWERS✅✅There are 4 valves in the heart that prevent blood from flowing back to the
chamber that just pumped the blood out to the next location. The 4 valves of the heart are: the
Tricuspid Valve, the Bicuspid Valve, the Pulmonary Semilunar Valve, and the Aortic
Semilunar Valve. The Tricuspid Valve separates the right atrium from the right ventricle, on
the "lung" side of the heart, and the Bicuspid Valve separates the left atrium from the left
ventricle, on the "body" side of the heart. The Pulmonary Semilunar Valve and the Aortic
Semilunar Valve, open when the ventricles contract, and blood flows out into the Pulmonary
Artery and the Aorta respectively.
Describe the path of blood as it circulates through the heart. - CORRECT
ANSWERS✅✅Blood transported to all the cells, tissues, and organs of the body gives up its
oxygen and becomes deoxygenated. Deoxygenated blood returns to the heart from all parts of
the body through the vena cava veins and enters the right atrium. From there, blood moves
past the tricuspid valve into the right ventricle. As the right ventricle contracts it causes the
tricuspid valve to close, the pulmonary semilunar valve to open, and forces blood up and out
of the ventricle. Next, the blood travels from the right ventricle, through the pulmonary
arteries, to the lungs where it picks up oxygen. Oxygenated blood returns to the heart through
the pulmonary veins and enters the left atrium. Blood moves past the bicuspid valve and
enters the left ventricle. As the left ventricle contracts, the bicuspid valve closes and the
semilunar valve opens allowing blood to travel to the body. After depleting its oxygen
supply, the deoxygenated blood returns to the heart and the process is repeated.
What are the difference between arteries, veins, and capillaries? - CORRECT
ANSWERS✅✅Veins are the vessels that transport blood from the rest of the body back to
the heart. Arteries carry oxygenated blood from the heart to the rest of the body. Capillaries
are the smallest vessels in the body and allow the exchange of oxygen and other materials
between blood and tissue cells. Capillaries also provide the connection between large arteries
and large veins.
, Arteries branch into arterioles, and arterioles branch into _________. - CORRECT
ANSWERS✅✅Capillaries.
What is the difference between pulmonary circulation and systemic circulation? - CORRECT
ANSWERS✅✅In pulmonary circulation, deoxygenated blood travels to the lungs from the
right side of the heart and returns to the left side of the heart. In systemic circulation,
oxygenated blood travels from the left side of the heart to all tissues of the body and then
returns to the right side of the heart to repeat the circulation process.
What is the name of the vein which carries deoxygenated blood to the right atrium? -
CORRECT ANSWERS✅✅The vein that carries deoxygenated blood to the right atrium is
called the vena cava.
What is the largest artery in the body? - CORRECT ANSWERS✅✅The largest artery in the
body is the aorta.
All of our organs depend on ________ and other materials transported by the blood. -
CORRECT ANSWERS✅✅Oxygen.
Why are the tissue layers in arteries thicker than in veins? - CORRECT ANSWERS✅✅The
tissue layers are thicker in the arteries than veins because blood in the arteries comes from the
heart and is under greater pressure.
Which are closer to the surface, arteries or veins? - CORRECT ANSWERS✅✅Veins are
closer to the skin surface than arteries.
Where does the exchange of materials between blood and tissue fluid take place? -
CORRECT ANSWERS✅✅The exchange of materials between the blood and tissue fluid
takes place in the capillaries.
What do veins have to keep the blood in them from flowing backwards? - CORRECT
ANSWERS✅✅Veins have valves that prevent blood from flowing backwards
QUESTIONS AND CORRECT ANSWERS
What is the purpose of the atria? - CORRECT ANSWERS✅✅The atria collect blood that
enters the heart and continuously pump it to the ventricles. The blood that enters the right
atrium lacks oxygen and is called deoxygenated blood. The blood that enters the left atrium is
rich in oxygen and is called oxygenated blood
What is the purpose of the ventricles? - CORRECT ANSWERS✅✅The ventricles are
responsible for pumping blood throughout out body through vessels known as arteries.
Name the four valves of the heart and describe their purpose. - CORRECT
ANSWERS✅✅There are 4 valves in the heart that prevent blood from flowing back to the
chamber that just pumped the blood out to the next location. The 4 valves of the heart are: the
Tricuspid Valve, the Bicuspid Valve, the Pulmonary Semilunar Valve, and the Aortic
Semilunar Valve. The Tricuspid Valve separates the right atrium from the right ventricle, on
the "lung" side of the heart, and the Bicuspid Valve separates the left atrium from the left
ventricle, on the "body" side of the heart. The Pulmonary Semilunar Valve and the Aortic
Semilunar Valve, open when the ventricles contract, and blood flows out into the Pulmonary
Artery and the Aorta respectively.
Describe the path of blood as it circulates through the heart. - CORRECT
ANSWERS✅✅Blood transported to all the cells, tissues, and organs of the body gives up its
oxygen and becomes deoxygenated. Deoxygenated blood returns to the heart from all parts of
the body through the vena cava veins and enters the right atrium. From there, blood moves
past the tricuspid valve into the right ventricle. As the right ventricle contracts it causes the
tricuspid valve to close, the pulmonary semilunar valve to open, and forces blood up and out
of the ventricle. Next, the blood travels from the right ventricle, through the pulmonary
arteries, to the lungs where it picks up oxygen. Oxygenated blood returns to the heart through
the pulmonary veins and enters the left atrium. Blood moves past the bicuspid valve and
enters the left ventricle. As the left ventricle contracts, the bicuspid valve closes and the
semilunar valve opens allowing blood to travel to the body. After depleting its oxygen
supply, the deoxygenated blood returns to the heart and the process is repeated.
What are the difference between arteries, veins, and capillaries? - CORRECT
ANSWERS✅✅Veins are the vessels that transport blood from the rest of the body back to
the heart. Arteries carry oxygenated blood from the heart to the rest of the body. Capillaries
are the smallest vessels in the body and allow the exchange of oxygen and other materials
between blood and tissue cells. Capillaries also provide the connection between large arteries
and large veins.
, Arteries branch into arterioles, and arterioles branch into _________. - CORRECT
ANSWERS✅✅Capillaries.
What is the difference between pulmonary circulation and systemic circulation? - CORRECT
ANSWERS✅✅In pulmonary circulation, deoxygenated blood travels to the lungs from the
right side of the heart and returns to the left side of the heart. In systemic circulation,
oxygenated blood travels from the left side of the heart to all tissues of the body and then
returns to the right side of the heart to repeat the circulation process.
What is the name of the vein which carries deoxygenated blood to the right atrium? -
CORRECT ANSWERS✅✅The vein that carries deoxygenated blood to the right atrium is
called the vena cava.
What is the largest artery in the body? - CORRECT ANSWERS✅✅The largest artery in the
body is the aorta.
All of our organs depend on ________ and other materials transported by the blood. -
CORRECT ANSWERS✅✅Oxygen.
Why are the tissue layers in arteries thicker than in veins? - CORRECT ANSWERS✅✅The
tissue layers are thicker in the arteries than veins because blood in the arteries comes from the
heart and is under greater pressure.
Which are closer to the surface, arteries or veins? - CORRECT ANSWERS✅✅Veins are
closer to the skin surface than arteries.
Where does the exchange of materials between blood and tissue fluid take place? -
CORRECT ANSWERS✅✅The exchange of materials between the blood and tissue fluid
takes place in the capillaries.
What do veins have to keep the blood in them from flowing backwards? - CORRECT
ANSWERS✅✅Veins have valves that prevent blood from flowing backwards
