LABORATORY Nine

The Circulatory System: Anatomy

Sheep Heart Dissection

• Identify the assigned superficial structures on your handout.

• Make a coronal section– Place the heart upside down, apex on the top – Find the posterior interventricular suclus and

keep it in the middle– With a scalpel cut around the apex, towards

the auricles, try not to saw– Identify the assigned internal structures

The Human Heart

Major Arteries Major Veins

Use right arm and left leg to study the arteries and veins of systemic circuit in limbs; except for great saphenous vein (look on the right leg)

Coronary Circulation(supplies the heart muscle)

Coronary sinus: look for a big blue vein at the posterior side

Demonstration Stations

• Microscope slide of cardiac muscle cells

• Microscope slide of blood vessels– Arteries have thicker wall– Veins have collapsed wall

Learn Next Week

• Hepatic portal circulation

• Fetal circulation

• Circle of Willis

• Lymphatic system