Heart Anatomy
This chamber of the heart receives oxygenated blood from the lungs.
What is the left atrium?
Blood flows from the right atrium directly into this chamber.
What is the right ventricle?
The lymphatic system helps return this fluid back to the bloodstream.
What is interstitial fluid?
This chemical released during inflammation increases blood vessel permeability.
What is histamine?
This is the first ECG wave and this wave represents atrial depolarization.
What is the P wave?
This large vessel carries oxygenated blood from the heart to the body.
What is the aorta?
This circuit carries blood between the heart and the lungs.
What is the pulmonary circuit?
Swelling caused by excess fluid buildup is known as this condition.
What is edema?
Why do lymph nodes swell during infection?
What is increased activity of lymphocytes and phagocytes?
A heart rate above normal resting levels is called this.
What is tachycardia?
This valve separates the left atrium from the left ventricle.
What is the mitral (bicuspid) valve?
Put these four in order: left atrium, lungs, left ventricle, aorta.
What is lungs → left atrium → left ventricle → aorta?
These cells inside lymph nodes fight infections.
What are lymphocytes?
Sam’s swollen neck lymph nodes and sore throat most likely indicate this type of problem.
What is an infection such as strep throat?
Which ECG wave represents ventricular depolarization? (hint, it is the tallest wave)
What is the R wave?
This heart chamber has the thickest muscular wall because it pumps blood to the entire body.
What is the left ventricle?
This valve must open for blood to leave the right ventricle and travel to the lungs.
What is the pulmonary valve?
Which lymphatic organ filters blood and helps remove old red blood cells?
What is the spleen?
Sarah’s post-surgery infection spreading into the bloodstream led to this life-threatening condition.
What is sepsis?
James’ dizziness and chest tightness during exercise suggest a possible problem with this system.
What is the cardiovascular sytem?
This structure anchors the heart valves and prevents them from flipping backward during contraction.
What are the chordae tendineae?
Starting at the right atrium, name the first three structures blood passes through on its way back to the lungs.
What are right atrium → tricuspid valve → right ventricle?
If lymph is not properly drained back into the bloodstream, this condition can occur in one limb.
What is lymphedema?
If blood pressure drops too low during infection, this dangerous condition may occur.
What is septic shock?
Why does heart rate increase during exercise to maintain homeostasis?
What is to deliver more oxygen and nutrients to tissues and remove waste?