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Blood to the bulbar conjunctiva is primarily derived from the ophthalmic artery. The blood supply to the palpebral conjunctiva (the eyelid) is derived from the external carotid artery. However, the circulations of the bulbar conjunctiva and palpebral conjunctiva are linked, so both bulbar conjunctival and palpebral conjunctival vessels are ...
The lacrimal artery supplies the lacrimal gland, the eyelids and conjunctiva, and the superior rectus muscle and lateral rectus muscle. [6]Recurrent meningeal branch. A recurrent meningeal branch may sometimes arise from the lacrimal artery to pass backwards, exiting the orbit through the lateral part of the superior orbital fissure to reach the dura mater.
The anterior ciliary arteries contribute arterial blood supply to the rectus muscles, conjunctiva, sclera, [2] [1] and the ciliary body. [ citation needed ] The anterior ciliary arteries issue branches to the conjunctiva before piercing the sclera, forming an artieral network in the limbal conjunctiva.
Blood supply In humans, the eyelids are supplied with blood by two arches on each upper and lower lid. ... excessive tearing and hardening of the eyelid conjunctiva ...
The blood supply to the lacrimal gland is provided by the ophthalmic artery with its branch - the lacrimal artery, while the venous blood is drained from this region via the superior ophthalmic vein. The lacrimal system is made up of a secretory system, which produces tears, and an excretory system, which drains the tears.
The conjunctiva is a tissue that lines the inside of the eyelids and covers the sclera. It is composed of unkeratinized, stratified squamous epithelium with goblet cells, and stratified columnar epithelium. The conjunctiva is basically transparent, and the white colour we see is actually sclera.
The macula responsible for central vision and the anterior part of the optic nerve are dependent on choroidal blood supply. [4] The structure of choroidal vessels can be revealed by optical coherence tomography , and blood flow can be revealed by Indocyanine green angiography , and laser Doppler imaging .
The conjunctiva is also one of the closest vascularized tissues to the cornea. As such, it provides a major source of immune components in the cornea . Not only does the conjunctiva produce IgA , like the lacrimal glands , but it also contains macrophages, neutrophilic granulocytes, mast cells, lymphocytes, and other aspects of the general ...