Question
Internal carotid artery at the bifurcantion from the common carotid is –
| A. |
Lateral to the extermal carotid
|
| B. |
Medial to external carotid
|
| C. |
Post to external carotid
|
| D. |
Anterior to external carotid
|
Show Answer
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Correct Answer » A
Explanation
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|
– The internal carotid artery (ICA) lies lateral and slightly posterior to the external carotid artery (ECA) at the bifurcation.
– The ECA is medial and anterior relative to the ICA.
– In multiple-choice questions, “lateral” is the preferred best single answer describing the ICA location.
Incorrect Options:
– B. Medial – this describes the ECA, not the ICA.
– C. Posterior – ICA is somewhat posterior, but lateral is the primary tested relation.
– D. Anterior – this is true for the ECA, not ICA.
Carotid bifurcation relations:
– Internal carotid artery: lateral, posterior, no neck branches.
– External carotid artery: medial, anterior, gives branches in neck.
