In biology, an adaptation, also called an adaptive trait, is a trait with a current functional role in the life of an organism that is maintained and evolved by means of natural selection. Adaptation refers to both the current state of being adapted and to the dynamic evolutionary process that leads to the adaptation.
Computed Tomography Angiogram (CT Angiogram). Guide. A computed tomography angiogram (CT angiogram) is a test that uses X-rays to provide detailed pictures of the heart and the blood vessels that go to the heart, lung, brain, kidneys, head, neck, legs, and arms.
An angiogram is an X-ray picture of the inside of your blood vessels. carotid angiogram is a study of the inside of your carotid arteries. The carotid artery is the large artery that supplies the brain with oxygen-rich blood. The carotid artery carries blood from the heart to the head via the neck. If a person has a blockage in the carotid artery, such as a carotid stenosis (narrowing of the carotid artery) or atherosclerosis (plaque