Electrolysis Practice Exam 2025 - Free Electrolysis Practice Questions and Study Guide

Question: 1 / 400

Which artery primarily supplies blood to the scalp?

Internal carotid artery

External carotid artery

The correct answer is that the external carotid artery primarily supplies blood to the scalp. The external carotid artery branches off from the common carotid artery and is responsible for supplying blood to various structures in the head and neck, including the scalp. Specifically, branches such as the superficial temporal artery and the occipital artery, which arise from the external carotid, play a significant role in vascularizing the scalp.

In contrast, the internal carotid artery mainly supplies blood to the brain and does not have a significant role in supplying blood to the scalp. The subclavian artery primarily provides blood to the upper limbs and some neck structures, while the vertebral artery supplies blood to the posterior part of the brain. These arteries have different anatomical pathways and functions, further differentiating them from the external carotid artery, which is the main source of blood for the scalp.

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Subclavian artery

Vertebral artery

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