How many veins carry oxygen-poor blood directly into the heart? 4 1 None 2 Question 60 What is the lower tib of the heart called? Endocardium Septum Pericardium Apcx

* **How many veins carry oxygen-poor blood directly into the heart?** **2** (The superior and inferior vena cava)* **What is the lower tip of the heart called?** **Apex**