5 Written Questions

1. decreases S-A and A-V nodal activity; leads to heart rate decrease
2. responsible for pulling the atrioventricular valves closed by means of the chordae tendineae
3. another name for heart attack
4. separated from the epicardium by the pericardial cavity
5. fibers of cardiac muscle tissue which distribute impulses over the entire heart

5 Matching Questions

1. coronary thrombosis
2. Deoxygenated blood returns from the systmic circulation and enters_____.
3. coronary sulcus
4. endocardium
5. The heart pumps blood into two circuits:

1. a inner layer of the heart wall consisting of epithelium and connective tissue as well as some specialized muscle tissue
2. b groove that marks border between atria and ventricles
3. c Right atrium
4. d blood clot completely blocking a coronary artery, causes a heart attack
5. e Pulmonary circulation and systemic circulation.

5 Multiple Choice Questions

1. separates the right and left atria.
   1. sinoatrial node
   2. ventricles
   3. interventricular septum
   4. interatrial septum
2. between the left ventricle and the largest artery in the body
   1. T wave
   2. aortic valve
   3. aorta
   4. auricle
3. deflection in a ECG
   1. T wave
   2. waves
   3. atria
   4. aorta
4. layer also known as the epicardium
   1. epicardium
   2. pericardium
   3. visceral pericardium
   4. myocardium
5. largest artery in the body
   1. atria
   2. aorta
   3. septum
   4. waves

5 True/False Questions

1. QRS complex → in ECG corresponding to depolarization of ventrical membranes, much stronger!!

   True        False

2. Freshly ______ _____ from pulmonary veins enters the left atrium, then the left ventricle. → Oxygenated blood

   True        False

3. auricle → receive blood from lungs and body

   True        False

4. coronary arteries → first two branches of the ascending aorta; feed the heart

   True        False

5. pulmonary valve → between the left ventricle and the largest artery in the body

   True        False