Final Answer:
1. Apex, right auricle, left auricle, and inferior vena cava (as labeled by arrows on external view)
2. The two loops are:
- Pulmonary circulation: right ventricle → lungs → left atrium
- Systemic circulation: left ventricle → body tissues → right atrium
3. The tricuspid valve prevents backflow of blood from the right ventricle into the right atrium during ventricular contraction.
4. The tricuspid valve has three leaflets and is on the right side (between right atrium and ventricle); the bicuspid (mitral) valve has two leaflets and is on the left side (between left atrium and ventricle).
5. Dorsal side labeling (from top to bottom, left to right as typical in such diagrams):
- Superior vena cava
- Right atrium
- Left atrium
- Aorta
- Pulmonary trunk
- Right ventricle
- Left ventricle
- Interventricular septum
- Chordae tendineae
- Papillary muscles
- Tricuspid valve
- Bicuspid (mitral) valve
- Apex
Blood flow path:
Body tissues → superior & inferior vena cava → right atrium → tricuspid valve → right ventricle → pulmonary valve → pulmonary trunk → lungs → pulmonary veins → left atrium → bicuspid valve → left ventricle → aortic valve → aorta → body tissues
Parent Tip: Review the logic above to help your child master the concept of sheep heart dissection worksheet answers.
