How to distinguish between internal and external carotid arteries

It's very simple. Below the anterior edge of the sternocleidomastoid muscle is where the carotid artery is located, and the common carotid artery (CCA) tends to bifurcate at the level of carotid 3 into the internal carotid artery (ICA) and the external carotid artery (ECA), at the junction of the neck, there is a branch (superior thyroid artery, STA) external carotid artery (ECA), and the internal carotid artery (ICA) does not branch until it enters the skull (divided into anterior cerebral artery ACA and middle cerebral artery MCA). At the junction of the neck, the internal carotid artery (ICA) is lateral and the external carotid artery (ECA) is medial.

The identification of the internal carotid artery and the external carotid artery can be carried out through the following points, I hope it will be helpful to you:

1.Generally, the diameter of the internal carotid artery is thicker than that of the external carotid artery.

2.The external carotid artery has extracranial branches.

3.The internal carotid artery is located posterolateral, and the external carotid artery is located anteromedial.

4.Spectrum: The internal carotid artery is low-resistance, and the external carotid artery is high-resistance.

5.Tapping the superficial temporal artery: the waveform of the external carotid artery is highly variable.

The external carotid artery has branches, the internal carotid artery has no branches, and the internal carotid artery has branches after entering the skull.

The external carotid artery has branches, and the internal carotid artery is a single one.

Identification of internal and external carotid arteries.

Common carotid artery: CCA Internal carotid artery: ICA External carotid artery: ECA

Answer] The blood in the neck of the :d face is mainly from the common carotid artery and the inferior clavicle yard imitation artery. The common carotid artery divides into the internal carotid artery and the external artery at the superior border of the approximately flat thyroid cartilage.

Blood from the cervical vertebrae** comes mainly from the intervertebral arteries. The intervertebral arteries in the neck originate from the vertebral arteries. The intervertebral arteries are generally one, sometimes in pairs, that run along the ventral (anterior) side of the spinal nerve into the spinal canal, where they divide into three main branches within the foramen.

The carotid artery is an artery that is present in the neck of vertebrates. There are external carotid arteries (Caro-Tis Externa, Externl Carotid Artery) and internal carotid arteries (Carotis Interna, English Internal Carotid Art-ery). The former is distributed to the top of the head and face.

The latter enters the skull and is distributed into the brain and orbits. At the time of occurrence, the gill arch does not form in the gill arch, so the branchial artery and the branchial artery are not separated from the great artery. The external carotid artery extends from anterior to the major abdominal artery, which extends from a vessel leading to the third branchial arch, but in some fish, tailed amphibians, and reptiles, this vessel also sends some blood to the root of the great artery.

Higher vertebrates are divided into left and right common carotid arteries by the common carotid trunk, and then branch into external carotid arteries and internal carotid arteries.

The common carotid artery is the arterial trunk of the head and neck. The left common carotid artery originates from the autonomic arterial arch, the right common carotid artery originates from the brachiocephalic trunk, and the common carotid artery on both sides passes behind the sternoclavicular joint, ascends along the lateral side of the esophagus, trachea, and larynx to the height of the superior border of the thyroid cartilage, and is divided into the internal carotid artery and the external carotid artery. The upper end of the common carotid artery is superficial, and its pulsation can be felt in living organisms.

At and near the bifurcation of the common carotid artery, there are carotid sinuses and carotid glomeruli, which are baroreceptors and chemoreceptors, respectively.

The external carotid artery is distributed in the head and face, initially located anteromedial to the internal carotid artery, and then turns to the lateral side through its anterior to the mandibular neck, and ascends through the parotid gland to the mandibular neck to form the two terminal branches of the superficial temporal artery and maxillary artery.

The internal carotid artery has no branch in the neck, but after exiting from the common carotid artery, it rises vertically to the base of the skull and enters the cranial cavity through the carotid artery canal, and the branches are distributed with the optic apparatus and brain.

The carotid artery works by delivering arterial blood to the tissues of the head and neck.

According to the situation of your examination, it means that you are pregnant, but depending on the situation of your double uterus, there is a gestational sac in the right uterus, and there is a fluid accumulation on the left side.

1. The carotid artery is generally located next to the thyroid cartilage, which is the location of the carotid artery on both sides of the Adam's apple. By touching the carotid artery, the pulsation of the carotid artery can be felt.

2. If there is ulnar stenosis or occlusion of the carotid artery, these patients are prone to cerebral infarction, or insufficient cerebral blood supply, and the carotid artery also has carotid sinus.

3. If atheroma formation of carotid artery is suspected, color ultrasound of carotid artery can be performed to check the width of the carotid artery, and the diagnosis can be confirmed. Mu Qiao.

1. The carotid artery is generally located on the left and right of the two transverse fingers next to the thyroid cartilage, that is, on both sides of our so-called Adam's apple, which is the location of the carotid artery. By touching the carotid artery, the pulsation of the carotid artery can be felt.

2. If there is carotid artery stenosis or occlusion, these patients are very late and prone to cerebral infarction, or cerebral blood supply is insufficient, and carotid artery sinus also exists.

3. If atheroplaque formation of carotid artery is suspected, color ultrasound examination of carotid artery can be performed at Dangao to make a clear diagnosis.