Cardiovascular System The Heart Guaranteed A+
List the 3 components of the Cardiovascular System (CV System) 1. blood
2. the heart
3. blood vessels
Which component of the CV system contains cardiac muscle? the heart
Which component of the CV system contains smooth muscle? blood vessels
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List the 3 components of the Cardiovascular System (CV System) ✅1. blood
2. the heart
3. blood vessels
Which component of the CV system contains cardiac muscle? ✅the heart
Which component of the CV system contains smooth muscle? ✅blood vessels
What enclosed cavity is the heart found in? ✅pericardial cavity
What tissue lines the pericardial cavity? ✅parietal pericardium
Which pericardial tissue covers the heart? ✅visceral pericardium
What lies between the 2 pericardial layers? ✅a small space containing pericardial fluid
How large is the heart? ✅roughly the size of a fist
How many times a day does the heart beat? ✅roughly 100,000 times!
What are the 3 layers of heart tissue? ✅1. epicardium
2. myocardium
3. endocardium
Which layer of heart tissue is the same as the visceral pericardium? ✅the epicardium
, What tissue layer makes up the bulk of the heart? ✅the myocardium
Which heart tissue layer lines the heart & is actually in contact with blood? ✅the endocardium
Does the blood flowing through the heart nourish the myocardium? ✅No. The myocardium is too thick.
The heart has its own blood supply called the coronary circulation.
What types of cells make up the bulk of the myocardium? ✅cardiac muscle cells, which are branched,
contain intercalated discs, and are striated & involuntary cells
How many "chambers" are found inside the heart? ✅4
What are the top 2 chambers called? ✅the left and right atria
What are the bottom 2 chambers called? ✅the left and right ventricles
What is the name of the wall that separates the right and left sides of the heart? ✅the septum
Why are the right and left sides of the heart separated from one another by the septum? ✅so that the
oxygenated blood on the left side of the heart doesn't mix with the deoxygenated blood on the right
side of the heart
Which chamber is attached to the superior and inferior vena cavas? (SVC and IVC) ✅the right atrium
What are the SVC and IVCs? ✅large blood vessels that return venous blood to the heart
What other blood vessel besides the 2 vena cavas empties into the right atrium (RA)? ✅the coronary
sinus
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