Blood enters the glomerulus through its ______arteriole and leaves the glomerulus through its _____arteriole.

Answer

To answer the question, we need to identify the two types of arterioles associated with the glomerulus in the kidney.

### Step-by-Step Solution:

1. **Understanding the Glomerulus**: The glomerulus is a network of capillaries located at the beginning of a nephron in the kidney. It plays a crucial role in the filtration of blood.

2. **Identifying the Afferent Arteriole**: Blood enters the glomerulus through a specific type of arteriole. This arteriole is known as the **afferent arteriole**. It brings blood that contains waste products, including nitrogenous waste, which needs to be filtered out.

3. **Identifying the Efferent Arteriole**: After the blood has been filtered in the glomerulus, it exits through another type of arteriole. This is called the **efferent arteriole**. The blood leaving through this arteriole is cleaner and has less waste, as the filtration process has taken place.

4. **Final Answer**: Therefore, the complete answer to the question is: Blood enters the glomerulus through its **afferent arteriole** and leaves the glomerulus through its **efferent arteriole**.