Don't you have a heart?
Cover Me
Inside Out
Cardiac Cycle
Vessels
100
This bone is superficial to the heart muscle
What is the sternum?
100
The layer of the heart that contracts.
What is the myocardium?
100
Hormones and neurotransmitters that affect heart rate are called these.
What are extrinsic factors?
100
The cardiac cycle begins in this phase.
What is mid-to-late diastole, or diastole?
100
Blood pumps from arteries into these, before being passed on to capillaries.
What are arterioles?
200
The pericardial cavity causes this indentation of the left lung.
What is the cardiac notch?
200
This covering connects the heart to the thoracic skeleton.
What is the pericardium, or fibrous pericardium?
200
The sinoatrial node sends a signal here first, where it waits for the atria to eject their blood into the ventricles.
What is the AV node or antrioventricular node?
200
The right ventricle fills with this kind of blood.
What is deoxygenated or low-oxygen blood?
200
This layer of vessel wall consists of smooth muscle and elastic.
What is the tunica media?
300
The apex presses inferiorly into this muscle.
What is the diaphragm?
300
This fluid-filled area is nestled in between the parietal and visceral layers of the serous pericardium.
What is the pericardial cavity?
300
The AV node sends electrical impulses down through the septum via this structure.
What is the Bundle of His?
300
The AV valves are held tightly shut by these.
What are chordae tendinae?
300
The tunica intima is made of this tissue, which is very good at regenerating itself.
What is endothelium (or specialized epithelium)?
400
After experiencing this, a patient will have some dead heart muscle.
What is a myocardial infarction?
400
Also known as the visceral serous pericardium.
What is the epicardium?
400
The apex is innervated by these, which cause it to contract via electrical impulse.
What are Purkinje fibers?
400
Once "Lub" happens, blood is pumped upward into these two structures.
What are the aorta and pulmonary artery?
400
This condition causes the vessel walls to swell and bleed, thanks to a lack of vitamin C.
What is scurvy?
500
An artificial one can takeover the job of the sinoatrial node.
What is a pacemaker?
500
You might say it's the pia mater of the heart.
What is the endocardium?
500
The vagus nerve releases this into the heart in order to slow heart rate down.
What is acetylcholine?
500
The average number of cardiac cycles per minute.
What is 75?
500
Collagen fibers exposed in this layer are used by platelets to start the clotting process.
What is the tunica externa?
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