The comparison is that in humans, only one carotid arteries branches from the brachiocephalic artery while for the fetal pig, both arteries branches from the brachiocephalic artery.
The difference between the origins of the carotid arteries in the human heart and the fetal pig is that In a human, the right carotid arteries branches from the brachiocephalic artery, while the left common carotid artery comes directly out of the aortic arch.
Meanwhile, In the fetal pig, both carotid arteries branch from the brachiocephalic artery.
Read more about Arteries at; https://brainly.com/question/64497
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