Blood pressure is highest in ____ and lowest in ___.

Options

A. Arteries, Veins
B. Arteries, Ventricles
C. Arteries, Relaxed atria
D. Arterioles, Veins

Answer

To answer the question "Blood pressure is highest in ____ and lowest in ____," we can follow these steps:

### Step 1: Identify the Blood Vessels
- Blood vessels in the circulatory system include arteries, veins, and capillaries.

### Step 2: Understand Blood Pressure Dynamics
- Blood pressure refers to the force exerted by circulating blood on the walls of blood vessels.

### Step 3: Determine Where Blood Pressure is Highest
- Blood pressure is highest in the arteries. This is because arteries carry blood away from the heart and must withstand high pressure generated by the heart's pumping action.

### Step 4: Determine Where Blood Pressure is Lowest
- Blood pressure is lowest in the veins. Veins carry blood back to the heart and have thinner walls compared to arteries, resulting in lower pressure.

### Conclusion
- Therefore, blood pressure is highest in **arteries** and lowest in **veins**.

### Final Answer
Blood pressure is highest in **arteries** and lowest in **veins**.

---