Sheep's Heart Dicection
Published on Nov 24, 2015
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PRESENTATION OUTLINE
Sheep's Heart Dissection
Rancho Minerva Middle School
Melissa Morales
Introduction:
The heart is a four chamber muscle that pumps blood to every cell in the body. The blood carries oxygen, nutrients (including C6H12O6) and other substances to every cell. The blood also carries carbon dioxide away from cells and to the lungs. The heart is a muscle that beats (pumps) about 70 times per minute. The sheep’s heart is similar, but smaller, than the human heart and gives us a good example of the anatomy of this critical organ.
Objectives:
1. To learn about the anatomy of the mammalian heart
2. To begin to learn about the procedures of conducting a science lab activity
Materials:
1. Preserved sheep's heart
2. Dissecting tray
3. Dissecting kit
a. Scalpel
b. Probes
c. Scissors
d. Metric ruler
e. Tweezers
Photo by Marsel Minga
Materials Continued:
4. Scale
5. Microscope and Slides
6. Gloves
Procedures:
1. Rinse and dry the heart. Weigh the heart on the scale. Measure the heart in centimeters. Record your observations.
2. Orient the heart with the ventral side facing you – the heart’s left side should be in your right hand. Study the exterior of the heart, the superior (top) of the heart and try to locate and identify the arteries and veins.
Photo by Cliff_Baise
Procedures Continued:
3. Place the heart on the dissecting tray. Using the scalpel, carefully make a lateral cut – dividing the heart into a front and a back half.
4. Study the interior structure of the heart. Identify the right and left atria, the ventricles, the valves and the blood vessels. Identify the left ventricle and the aorta.
Photo by NASA's Marshall Space Flight Center
Data and Observations:
The heart was hard, and inside was
a little dark
Photo by Stuck in Customs
Conclusions:
The sheep's heart dissection was cool I learned cool stuff
Photo by kevin dooley
