Answer
**1. Left Ventricle of the Heart:**
The journey begins as the left ventricle contracts, propelling oxygenated blood into the aorta.
**2. Aorta:**
The freshly oxygenated red blood cell is ejected into the aorta, the body's largest artery.
**3. Descending Aorta:**
The aorta arches over the heart and then descends through the chest and abdomen.
**4. Abdominal Aorta:**
The descending aorta continues into the abdominal cavity.
**5. Common Iliac Arteries:**
The abdominal aorta divides into the left and right common iliac arteries.
**6. External Iliac Artery:**
The left common iliac artery becomes the external iliac artery, which travels towards the lower limb.
**7. Femoral Artery:**
The external iliac artery transitions into the femoral artery as it enters the thigh.
**8. Popliteal Artery:**
The femoral artery continues into the popliteal artery behind the knee.
**9. Anterior Tibial Artery:**
The popliteal artery bifurcates into the anterior and posterior tibial arteries. The anterior tibial artery extends down the front of the leg.
**10. Dorsalis Pedis Artery:**
The anterior tibial artery becomes the dorsalis pedis artery as it courses over the dorsum of the foot.
**11. Arcuate Artery and Dorsal Metatarsal Arteries:**
The dorsalis pedis artery gives rise to the arcuate artery and dorsal metatarsal arteries, supplying the metatarsal bones and dorsal aspects of the toes.
**12. Digital Arteries:**
The dorsal metatarsal arteries continue as digital arteries that branch and extend into each toe.
**13. Toe Capillaries:**
The digital arteries transition into capillaries within the tissues of the toes, allowing for oxygen and nutrient exchange.
Throughout this journey, the red blood cell releases oxygen and nutrients to the surrounding tissues, supporting cellular functions. It then collects carbon dioxide and waste products to be transported back to the heart and lungs for oxygenation once again. This continuous circulation ensures that all body parts, including the toes, receive the vital resources they need to function properly.
Work Step by Step
**1. Left Ventricle of the Heart:**
The journey begins as the left ventricle contracts, propelling oxygenated blood into the aorta.
**2. Aorta:**
The freshly oxygenated red blood cell is ejected into the aorta, the body's largest artery.
**3. Descending Aorta:**
The aorta arches over the heart and then descends through the chest and abdomen.
**4. Abdominal Aorta:**
The descending aorta continues into the abdominal cavity.
**5. Common Iliac Arteries:**
The abdominal aorta divides into the left and right common iliac arteries.
**6. External Iliac Artery:**
The left common iliac artery becomes the external iliac artery, which travels towards the lower limb.
**7. Femoral Artery:**
The external iliac artery transitions into the femoral artery as it enters the thigh.
**8. Popliteal Artery:**
The femoral artery continues into the popliteal artery behind the knee.
**9. Anterior Tibial Artery:**
The popliteal artery bifurcates into the anterior and posterior tibial arteries. The anterior tibial artery extends down the front of the leg.
**10. Dorsalis Pedis Artery:**
The anterior tibial artery becomes the dorsalis pedis artery as it courses over the dorsum of the foot.
**11. Arcuate Artery and Dorsal Metatarsal Arteries:**
The dorsalis pedis artery gives rise to the arcuate artery and dorsal metatarsal arteries, supplying the metatarsal bones and dorsal aspects of the toes.
**12. Digital Arteries:**
The dorsal metatarsal arteries continue as digital arteries that branch and extend into each toe.
**13. Toe Capillaries:**
The digital arteries transition into capillaries within the tissues of the toes, allowing for oxygen and nutrient exchange.
Throughout this journey, the red blood cell releases oxygen and nutrients to the surrounding tissues, supporting cellular functions. It then collects carbon dioxide and waste products to be transported back to the heart and lungs for oxygenation once again. This continuous circulation ensures that all body parts, including the toes, receive the vital resources they need to function properly.
