**Question:** In newborns, the artery used for palpation of pulse is ____.

**Core Concept:** Palpation of pulse involves the identification and assessment of arterial blood flow in the radial, brachial, carotid, and femoral arteries, which provide essential information about the cardiovascular system and overall health status of an individual.

**Why the Correct Answer is Right:** In newborns, the radial artery is the most suitable site for pulse palpation due to its small size, ease of access, and clear arterial pulse. The radial artery is located on the dorsum of the non-dominant hand, making it easily accessible for auscultation and palpation. Additionally, the pulse is well-defined and can be easily identified in newborns.

**Why Each Wrong Option is Incorrect:**

A. **Brachial artery:** Although palpable, it is larger and more difficult to access in newborns.
B. **Carotid artery:** The carotid artery is large and located deep to the sternocleidomastoid muscle, making it inaccessible for pulse palpation in newborns.
C. **Femoral artery:** The femoral artery is large and located deep in the thigh, rendering it inaccessible for pulse palpation in newborns.
D. **Femoral artery:** Similar to option C, the femoral artery is large and deep in the thigh, not suitable for pulse palpation in newborns.

**Clinical Pearl:** Palpation of the radial artery in newborns provides a reliable assessment of cardiovascular function and overall health status. Regular monitoring of the newborn's pulse is essential for early detection and intervention of potential complications, such as sepsis or cardiac abnormalities.

**Correct Answer:** D. Femoral artery

**Explanation:** The femoral artery is incorrectly marked as the correct answer in this question, but I have provided explanations for all incorrect options to clarify why the radial artery is the preferred site for pulse palpation in newborns.