Blood Flow
Which chamber receives deoxygenated blood from the body
Right atrium
Where does gas exchange occur in the lungs?
Alveoli
True or False: Pulmonary arteries carry oxygen-rich blood.
False - they carry deoxygenated blood
What is the first stop for blood after leaving the left ventricle?
Aorta
Which chamber has the thickest muscle wall?
Left ventricle
What blood vessel carries blood from the right ventricle to the lungs?
Pulmonary artery
What gas do we exhale as waste?
Carbon dioxide
Which side of the heart carries oxygen-rich blood?
Left side
After the superior and inferior vena cava, blood enters which chamber?
Right Atrium
What is the muscular wall separating the left and right sides of the heart called?
Septum
Which valve prevents backflow between the right atrium and right ventricle?
Tricuspid valve
Which muscle is the primary driver of breathing?
Diaphragm
Which blood vessels carry oxygen-rich blood from the lungs to the heart?
Pulmonary veins
Trace the path of blood from the right atrium to the lungs (name chambers, valves, and vessels).
(Right Atrium → Tricuspid Valve → Right Ventricle → Pulmonary Valve → Pulmonary Artery → Lungs)
Which valve is located between the left atrium and left ventricle?
Mitral valve (also can be referred to as the bicuspid valve)
After leaving the lungs, blood returns to the heart through which vessels
Pulmonary veins
What is the normal oxygen saturation range for a healthy adult?
90-100%
What color is used to represent oxygen-poor blood in diagrams?
Blue
Trace the path of oxygenated blood from the lungs to the body (name chambers, valves, and vessels).
(Pulmonary Veins → Left Atrium → Mitral Valve → Left Ventricle → Aortic Valve → Aorta → Body)
Which part of the heart is known as the “pacemaker”?
SA node
List the 4 heart valves in order of blood flow starting at the right atrium.
(Tricuspid → Pulmonary → Mitral (Bicuspid) → Aortic)
Name the process where oxygen moves from the alveoli into the blood.
Diffusion
Where in the body does blood become oxygenated?
Lungs
Complete the full blood flow pathway starting at the right atrium and ending back at the right atrium.
(Right Atrium → Tricuspid Valve → Right Ventricle → Pulmonary Valve → Pulmonary Artery → Lungs → Pulmonary Veins → Left Atrium → Mitral Valve → Left Ventricle → Aortic Valve → Aorta → Body → Vena Cava → Right Atrium)
Name the layer of the heart that is responsible for contraction.
Myocardium