Carotid sheath contents is a local condensation of the three layers of which prevertebral layer, pretacheal layer and the deep fascia cladding layer, the surrounded common carotid artery, internal carotid artery, internal jugular vein, vagus nerve, deep cervical lymph nodes.
top of the carotid sheath is also associated with other cranial nerves (eg glosofaringeal, the hypoglossal nerve and accessory nerve). Sheath front wall of the cervical carotid containing ansa cervicalis. The carotid sheath Contents include:
1 carotid artery.
The common carotid artery are the left and right sides of the body. These arteries originate from different arteries, but are symmetric sources. The right common carotid artery brachiocephalicus originated in the neck of the trunk; to the left of the aortic arch in the chest. This is divided into the external and internal carotid arteries at the top of the thyroid cartilage, approximately at the level of the fourth cervical vertebra.
2. internal carotid artery
The internal carotid artery is a large artery paired, one on each side of the head and neck, in human anatomy. They are the result of the joint when it bifurcates into the internal and external carotid artery at cervical vertebrae level 3 or 4; the internal carotid artery feeds the brain, while the external carotid nourish other parts of the head, such as the face, scalp, skull and meninges.
3. internal jugular vein
The internal jugular vein is a paired jugular vein, the blood collected from the brain and seperficial parts of the face and neck. The vein runs in the carotid sheath with the common carotid artery and vagus nerve.
4. vagus nerve
The vagus nerve cited as the pneumogastric nerve, the tenth cranial nerve or CN X and interfaces with the parasympathetic control of the heart, lungs and stomach, intestine tract. The vagus are paired; However, generally they are known in the singular. It is the longest nerve of the autonomic nervous system in the human body.
5. The deep cervical lymph nodes
The deep cervical lymph nodes are a group of lymph nodes in the vicinity of the internal jugular vein. They can be divided into upper and lower groups or the superior and inferior groups.
Alternatively, the above can be divided into deep anterior cervical lymph nodes and deep lateral cervical lymph nodes.
They can also be divided into three groups: “superior deep jugular”, “middle deep jugular”, and “inferior deep jugular”