Blank heart diagram labeling quiz online, anatomical heart drawing. This is a blank heart diagram for students to label with the following parts: left ventricle, right ventricule, blood from the lungs, left atrium, right atrium, atrial septal defect etc. Also find out how these parts help the heart to receive and pump blood to different parts of the body. The heart is a vital organ of the body; we simple cannot do without it. Each part plays a key role. In this quiz students will drag and drop each lable at the correct position. At the end submit to see how far you have gone in understanding how to label a heart. Download the printable version of this activity under the worksheets section. | Multiple choice quiz featuring biology test questions for students to review biology topics. Click on each question and select the correct answer below and submit. Feedback is instant and at the end you will get your score. Biology quiz for 2nd, 3rd, 4th, 5th, 6th, 7th grades to review. Focus: Online science Trivia | science quiz questions | Biology Test | Biology questions.