BIO 1108 EXAM QUESTIONS AND
ANSWERS A+ GRADED
Identify the locations and functions of the chambers and valves of the
mammalian heart
The mammalian heart consists of four chambers: two atria (upper chambers) and two
ventricles (lower chambers).
How does the blood flow through the heart?
Blood flows through the heart in one direction, facilitated by four main valves: the
tricuspid valve, the mitral (or bicuspid) valve, the pulmonary valve, and the aortic valve.
Where is the tricuspid valve located?
Where is the mitral valve located?
What do these valves ensure?
The tricuspid valve is located between the right atrium and right ventricle, and the mitral
valve is between the left atrium and left ventricle. These ensure blood flows from the
atria to the ventricles when the heart beats.
Where is the pulmonary valve located?
What is the pulmonary valve responsible for?
The pulmonary valve, located at the exit of the right ventricle, and the aortic valve, at the
exit of the left ventricle, regulate blood flow out of the heart to the lungs and the rest of
the body, respectively.
What does the right atrium do?
Right Atrium: Receives deoxygenated blood from the body. Pumps it to right ventricle.
Where does the right ventricle receive its blood from?
What does the right ventricle do?
Right Ventricle: Receives blood from the right atrium and pumps blood to the lungs via
the pulmonary artery.
What kind of blood/where does the left atrium receive its blood?
What does it do with this blood?
Left Atrium: Receives oxygenated blood from the lungs via the pulmonary veins. Pumps
it into the left ventricle.
Where does the left ventricle receive its blood?
What does it do with this blood?
Left Ventricle: Receives blood from the left atrium and pumps oxygenated blood to the
body through the aorta.
What is the order of pumped blood on the mammalian heart?
Body → Right Atrium → Right Ventricle→ Lungs → Left Atrium → Left
Ventricle → Body
It’s a continuous cycle!
What are the 4 chambers?
Chambers:
Right Atrium: Receives deoxygenated blood from the superior and inferior vena cava.
Pumps it into the right ventricle.
, Right Ventricle: Receives blood from the right atrium and pumps it to the lungs via the
pulmonary artery.
Left Atrium: Receives oxygenated blood from the lungs via the pulmonary veins.
Pumps it into the left ventricle.
Left Ventricle: Receives blood from the left atrium and pumps oxygenated blood to the
body through the aorta.
What is systole?
contraction
What is diastole?
relaxation
T or F atrium recieves blood?
True
T or F ventricles pump blood?
True
Where does the blood go from deoxygenated to oxygenated?
The lungs are where blood gets oxygenated. Here's what happens:
The right ventricle pumps deoxygenated blood to the lungs through the pulmonary
artery.
In the lungs, blood releases carbon dioxide (which we exhale) and picks up oxygen
(from inhaled air).
The now oxygenated blood returns to the left atrium of the heart through
the pulmonary veins.
The lungs are essential for exchanging gases to ensure oxygen-rich blood is ready to
supply the body.
2
The highest arterial blood pressure attained during ventricular contraction is
called [blank] pressure. The lowest attained during ventricular relaxation is called
[blank] pressure.
Systolic, diastolic
Place the following structures in the proper order to illustrate flow of blood
through the heart, beginning with blood returning from the systemic circuit.
right atrium
left atrium
right AV valve
left AV valve
right ventricle
left ventricle
Right Atrium (receives deoxygenated blood from the body).
Right AV Valve (tricuspid valve, blood flows to the right ventricle).
Right Ventricle (pumps deoxygenated blood to the lungs).
Left Atrium (receives oxygenated blood from the lungs).
Left AV Valve (mitral valve, blood flows to the left ventricle).
Left Ventricle (pumps oxygenated blood to the rest of the body)
lace the following structures in order of how the electrical signal passes between
structures in the heart.
AV node
ANSWERS A+ GRADED
Identify the locations and functions of the chambers and valves of the
mammalian heart
The mammalian heart consists of four chambers: two atria (upper chambers) and two
ventricles (lower chambers).
How does the blood flow through the heart?
Blood flows through the heart in one direction, facilitated by four main valves: the
tricuspid valve, the mitral (or bicuspid) valve, the pulmonary valve, and the aortic valve.
Where is the tricuspid valve located?
Where is the mitral valve located?
What do these valves ensure?
The tricuspid valve is located between the right atrium and right ventricle, and the mitral
valve is between the left atrium and left ventricle. These ensure blood flows from the
atria to the ventricles when the heart beats.
Where is the pulmonary valve located?
What is the pulmonary valve responsible for?
The pulmonary valve, located at the exit of the right ventricle, and the aortic valve, at the
exit of the left ventricle, regulate blood flow out of the heart to the lungs and the rest of
the body, respectively.
What does the right atrium do?
Right Atrium: Receives deoxygenated blood from the body. Pumps it to right ventricle.
Where does the right ventricle receive its blood from?
What does the right ventricle do?
Right Ventricle: Receives blood from the right atrium and pumps blood to the lungs via
the pulmonary artery.
What kind of blood/where does the left atrium receive its blood?
What does it do with this blood?
Left Atrium: Receives oxygenated blood from the lungs via the pulmonary veins. Pumps
it into the left ventricle.
Where does the left ventricle receive its blood?
What does it do with this blood?
Left Ventricle: Receives blood from the left atrium and pumps oxygenated blood to the
body through the aorta.
What is the order of pumped blood on the mammalian heart?
Body → Right Atrium → Right Ventricle→ Lungs → Left Atrium → Left
Ventricle → Body
It’s a continuous cycle!
What are the 4 chambers?
Chambers:
Right Atrium: Receives deoxygenated blood from the superior and inferior vena cava.
Pumps it into the right ventricle.
, Right Ventricle: Receives blood from the right atrium and pumps it to the lungs via the
pulmonary artery.
Left Atrium: Receives oxygenated blood from the lungs via the pulmonary veins.
Pumps it into the left ventricle.
Left Ventricle: Receives blood from the left atrium and pumps oxygenated blood to the
body through the aorta.
What is systole?
contraction
What is diastole?
relaxation
T or F atrium recieves blood?
True
T or F ventricles pump blood?
True
Where does the blood go from deoxygenated to oxygenated?
The lungs are where blood gets oxygenated. Here's what happens:
The right ventricle pumps deoxygenated blood to the lungs through the pulmonary
artery.
In the lungs, blood releases carbon dioxide (which we exhale) and picks up oxygen
(from inhaled air).
The now oxygenated blood returns to the left atrium of the heart through
the pulmonary veins.
The lungs are essential for exchanging gases to ensure oxygen-rich blood is ready to
supply the body.
2
The highest arterial blood pressure attained during ventricular contraction is
called [blank] pressure. The lowest attained during ventricular relaxation is called
[blank] pressure.
Systolic, diastolic
Place the following structures in the proper order to illustrate flow of blood
through the heart, beginning with blood returning from the systemic circuit.
right atrium
left atrium
right AV valve
left AV valve
right ventricle
left ventricle
Right Atrium (receives deoxygenated blood from the body).
Right AV Valve (tricuspid valve, blood flows to the right ventricle).
Right Ventricle (pumps deoxygenated blood to the lungs).
Left Atrium (receives oxygenated blood from the lungs).
Left AV Valve (mitral valve, blood flows to the left ventricle).
Left Ventricle (pumps oxygenated blood to the rest of the body)
lace the following structures in order of how the electrical signal passes between
structures in the heart.
AV node
