Learning Outcome 12-3

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Chapter 12: The Cardiovascular System: The Heart

Chapter Mini-Quizzes

Explain the events of the cardiac cycle, and relate the heart sounds to specific events in this cycle.

Key:
Level 1: Reviewing Facts and Terms
Level 2: Reviewing Concepts
Level 3: Critical Thinking

This activity contains 8 questions.

The first heart sound ("lubb") is produced as the valves close and the semilunar valves open. [Level 3]

Label the events in the accompanying illustration of the cardiac cycle. [Level 2]

The letters A through F appear on an image associated with this question.

The letters A through F appear on an image associated with this question.

For each item below, use the pull-down menu to select the letter that labels the correct part of the image.
2.1 Atrial systole ends, atrial diastole begins

2.2 Ventricular systole - second phase

2.3 Ventricular systole - first phase

2.4 Atrial systole begins

2.5 Ventricular diastole - late

2.6 Ventricular diastole - early

Do the atria and ventricles contract simultaneously? Why or why not? [Level 2]

To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.

Which of the following heart sounds occurs when the semilunar valves close? [Level 2]

	first heart sound
	second heart sound
	third heart sound
	fourth heart sound

During which of the following events do the semilunar valves open and blood is ejected? [Level 3]

atrial systoleatrial diastoleventricular diastole - earlyventricular systole - first phaseventricular systole - second phaseventricular diastole - late

Describe the events that occur when ventricular diastole begins. [Level 3]

To create paragraphs in your essay response, type <p> at the beginning of the paragraph, and </p> at the end.

The period between the start of one heartbeat and the start of the next is a single , each of which includes a period of contraction and a period of relaxation. [Level 2]

Blood cannot begin moving into the arterial trunks until [Level 3]

ventricular pressures equal arterial pressures.arterial pressures exceed ventricular pressures.ventricular pressures exceed arterial pressures.none of the above

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