Pig Heart Dissection Workshop

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Pig Heart Dissection Workshop
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Pig Heart Dissection Workshop
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Two parts to this session
Pre-dissection activities

• Drawing activity
• Heart-Walk activity
• Electrophysiology activity

• Pig heart dissection

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Draw-the-Heart

• A Pre-Dissection Pig Heart Activity

D. Kacher - DeBakey High School for Health
Professions
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Supplies needed

• two sheets of blank paper
• pencil (with eraser)
• Highlighters or colored pencils
• (blue, red, green, yellow)

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ObjectivesUpon completion of this lesson, you
should be able to

• identify great vessels valves associated with
  right left sides of the heart
• differentiate between systemic pulmonary
  circulation
• trace the pathway of blood through the heart

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The heart is a double pump
right heart pump
left heart pump
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The right heart pumps deoxygenated blood.
(Called deoxygenated although it has
approximately 68 - 75 oxygen.)
The left heart pumps oxygenated blood (94-100).
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Deoxygenated blood

• called venous blood leaves body tissues
• returns to right heart, which pumps it to lungs
  where its re-oxygenated
• leaves lungs and returns to left heart
• Movement of blood from heart to lungs back to
  heart is referred to as pulmonary circulation or
  the pulmonary circuit

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Drawing the right heart.
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Step 1Draw outline of heart label as seen
below.
Rt. side
Lf. side
apex
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Throughout this exercise, there will be yellow
highlighting to show drawing sequence.
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Step 2Draw myocardium septum identify
chambers.
Rt. side
Lf. side
LA
RA
septum
LV
RV
apex
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Step 3 Draw superior vena cava (SVC) inferior
vena cava (IVC).
Rt. side
Lf. side
SVC
LA
RA
septum
LV
IVC
RV
apex
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Step 4Draw pulmonary artery wall of right
atrium
Rt. side
Lf. side
SVC
LA
RA
pulmonary artery
septum
LV
IVC
RV
apex
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The pulmonary artery is the only artery in the
body to carry deoxygenated blood.
Remember Arteries carry blood Away from the
heart.
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Step 5 Draw tricuspid pulmonary valves.
Rt. side
Lf. side
SVC
LA
pulmonary artery
pulmonary valve
RA
tricuspid valve
septum
LV
RV
IVC
apex
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Step 6 Outline great vessels chambers in blue.
Rt. side
Lf. side
SVC
LA
pulmonary artery
pulmonary valve
RA
tricuspid valve
septum
LV
RV
IVC
apex
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Step 7 Color myocardium valves.
Rt. side
Lf. side
SVC
LA
pulmonary artery
pulmonary valve
RA
tricuspid valve
septum
LV
RV
IVC
apex
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Step 8 Indicate pathway of blood with blue
arrows.
Rt. side
Lf. side
SVC
LA
pulmonary artery
pulmonary valve
RA
tricuspid valve
LV
RV
IVC
apex
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Next, we move to the left heart.
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Left heart blood

• called arterial blood- leaves lungs as highly
  oxygenated blood (94 - 100)
• returns to left heart
• pumped to organ systems (including the
  heart--coronary arteries)
• referred to as systemic circulation or the
  systemic circuit

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Drawing the left heart.
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Step 1Draw outline of heart label as seen below
Rt. side
Lf. side
apex
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Step 2Draw myocardium septum identify
chambers
Rt. side
Lf. side
LA
RA
septum
LV
RV
apex
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Step 3 Draw aorta upper wall of left atrium
Rt. side
Lf. side
arch
aortic
aorta
LA
aortic root
RA
septum
LV
RV
apex
descending aorta
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Step 4 Draw label pulmonary veins
Rt. side
Lf. side
arch
aortic
aorta
pulmonary veins
pulmonary veins
LA
aortic root
RA
septum
LV
RV
apex
descending aorta
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Step 5 Draw mitral aortic valves.
Rt. side
Lf. side
arch
aortic
aorta
pulmonary veins
pulmonary veins
LA
aortic root
mitral valve
RA
aortic valve
septum
LV
RV
apex
descending aorta
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Pronunciation .
mitral mI-trall prefix mi- two
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Step 6 Outline chambers great vessels in red.
Rt. side
Lf. side
arch
aortic
aorta
pulmonary veins
pulmonary veins
LA
aortic root
mitral valve
RA
aortic valve
septum
LV
RV
apex
descending aorta
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Step 7 Color the myocardium valves.
Rt. side
Lf. side
arch
aortic
aorta
pulmonary veins
pulmonary veins
LA
aortic root
mitral valve
RA
aortic valve
septum
LV
RV
apex
descending aorta
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Step 8 Indicate pathway of blood with arrows.
Rt. side
Lf. side
arch
aortic
aorta
pulmonary veins
pulmonary veins
LA
aortic root
mitral valve
RA
aortic valve
septum
LV
RV
apex
descending aorta
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Post Test

1. Please clear your desks.
2. Take out a sheet of notebook paper.
3. Write your name and proper heading at top of
   paper.

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1. Does the left heart transport high or low
   oxygenated blood?
2. Which great vessels are associated with the right
   heart?
3. Name the heart valves associated with the right
   heart.
4. Which great vessels are associated with the left
   heart?
5. Which two heart valves are associated with the
   left heart?
6. What does the Latin word septum mean?

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1. Why are heart valves one-way valves?
2. In the term mitral, what does the prefix mi-
   mean?
3. Which artery carries deoxygenated blood?
4. What does systemic circulation refer to?
5. What does pulmonary circulation refer to?
6. Which muscular wall do you think is thicker-- the
   right ventricular myocardium or the left
   ventricular myocardium and why?