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4. Figure 11-3 is a schematic drawing of the microscopic structure of cardiac muscle. Using different colors, color the coding circles of the structures listed below and the corresponding structures on the figure. Nuclei (with nucleoli) Muscle fibers Intercalated discs Striations Figure 11-3 5. The events of one complete heartbeat are referred to as the cardiac cycle. Complete the following statements that describe these events. Insert your answers in the answer blanks. 1. 2. 3. 4. 5. 6. 7. 8. The contraction of the ventricles is referred to as (1), and the period of ventricular relaxation is called (2). The monosyllables describing heart sounds during the cardiac cycle are (3). The first heart sound is a result of closure of the (4) valves; closure of the (5) valves causes the second heart sound. The heart chambers that have just been filled when you hear the first heart sound are the (6), and the chambers that have just emptied are the (7). Immediately after the second heart sound, the (8) are filling with blood, and the (9) are empty. Abnormal heart sounds, or (10), usually indicate valve problems. 9. 10.

          4. Figure 11-3 is a schematic drawing of the microscopic structure of cardiac muscle. Using different colors, color the coding circles of the structures listed below and the corresponding structures on the figure.

Nuclei (with nucleoli)
Muscle fibers
Intercalated discs
Striations

Figure 11-3

5. The events of one complete heartbeat are referred to as the cardiac cycle. Complete the following statements that describe these events. Insert your answers in the answer blanks.

1. 
2. 
3. 
4. 
5. 
6. 
7. 
8. 

The contraction of the ventricles is referred to as (1), and the period of ventricular relaxation is called (2). The monosyllables describing heart sounds during the cardiac cycle are (3). The first heart sound is a result of closure of the (4) valves; closure of the (5) valves causes the second heart sound. The heart chambers that have just been filled when you hear the first heart sound are the (6), and the chambers that have just emptied are the (7). Immediately after the second heart sound, the (8) are filling with blood, and the (9) are empty. Abnormal heart sounds, or (10), usually indicate valve problems.

9.
10.

4. Figure 11-3 is a schematic drawing of the microscopic structure of cardiac muscle. Using different colors, color the coding circles of the structures listed below and the corresponding structures on the figure.

Nuclei (with nucleoli)
Muscle fibers
Intercalated discs
Striations

Figure 11-3

5. The events of one complete heartbeat are referred to as the cardiac cycle. Complete the following statements that describe these events. Insert your answers in the answer blanks.

1.
2.
3.
4.
5.
6.
7.
8.

The contraction of the ventricles is referred to as (1), and the period of ventricular relaxation is called (2). The monosyllables describing heart sounds during the cardiac cycle are (3). The first heart sound is a result of closure of the (4) valves; closure of the (5) valves causes the second heart sound. The heart chambers that have just been filled when you hear the first heart sound are the (6), and the chambers that have just emptied are the (7). Immediately after the second heart sound, the (8) are filling with blood, and the (9) are empty. Abnormal heart sounds, or (10), usually indicate valve problems.

9.
10.

Added by David A.

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