Blood pressure in the right ventricle
**Core Concept**
The right ventricle (RV) is one of the four chambers of the heart responsible for pumping oxygen-depleted blood from the body to the lungs for oxygenation. The pressure within the right ventricle is determined by the resistance to blood flow through the pulmonary circuit and the contractile force of the RV.
**Why the Correct Answer is Right**
The blood pressure in the right ventricle is typically lower than in the left ventricle due to the lower resistance of the pulmonary circuit compared to the systemic circuit. The RV generates a pressure of approximately 15-30 mmHg during systole, which is sufficient to overcome the resistance of the pulmonary capillaries and facilitate blood flow to the lungs. The pressure is maintained by the contraction of the RV muscle and the opening of the pulmonary valve.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it does not provide a specific value or comparison for the blood pressure in the right ventricle.
* **Option B:** This option is incorrect because it suggests a higher pressure than the actual value for the right ventricle.
* **Option C:** This option is incorrect because it is not a valid unit of measurement for blood pressure.
* **Option D:** This option is incorrect because it is not a specific value or comparison for the blood pressure in the right ventricle.
**Clinical Pearl / High-Yield Fact**
The blood pressure in the right ventricle is an important parameter in assessing cardiac function, particularly in conditions such as pulmonary hypertension or right ventricular failure. A failure to recognize the normal pressure range in the right ventricle can lead to misdiagnosis or inappropriate treatment.
**Correct Answer: D. 10-15 mmHg**