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Circulatory Quiz 2
Heart wall, chambers, vessels, arteries, valves, cardiac muscle, electr evnts
| Question | Answer |
|---|---|
| What is the visceral layer of the serous pericardium called? | Epicardium |
| What is the name of the cardiac muscle and what is its function? | Myocardium; responsible for pumping action of the heart |
| What is the function of endocardium? | Lines myocardium and covers valves for smooth blood flow in a friction-less environment |
| How many chambers are in the heart? | 4 |
| What are the receiving chambers of the heart called? | Atria |
| What is the name of the structure that separates the 2 atria? | Interatrial septum |
| What is the fossa ovalis? | A remnant of foramen ovale, an opening between left and right atria in the fetus. |
| What is the purpose of foramen ovale in the developing fetus? | The foramen ovale allows blood flow to bipass lungs because the fetus does not need to breathe. It closes at birth. |
| What is an auricle and what is its purpose? | A hollow appendage on the anterior surface that increases volume of the atria when needed. |
| What are the muscles in the auricles and the anterior wall of the right atrium that help to pull atria back to normal size after using auricles? | Pectinate Muscles |
| What are ventricles? | The 2 pumping chambers of the heart |
| Why is the left ventricle's muscle wall thicker than the right? | The left ventricle has to pump blood to the entire body while the right ventricle only pumps blood to the lungs. |
| What is the structure that divides the 2 ventricles called? | Interventricular septum |
| What are raised bundles of muscle fibers on the walls of the ventricles called? | Trabeculae carneae |
| What are sulci? | External grooves that house blood vessels and adipose tissue. |
| Where is the coronary sulcus? | Between the atria and ventricles |
| Where are the anterior and posterior interventricular sulci located? | Between the ventricles on the anterior and posterior of the heart |
Created by:
kcurtis1990
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