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1 Ophthalmic artery. A. ophthalmica. It passes from the anterior convex arch of the internal carotid artery through the optic canal into the orbit accompanied by the optic nerve. A

2 Central retinal artery. A. centralis retinae. It passes into the optic nerve from below about 1 mm behind the eyeball. Distribution: internal layers of the retina. A

Lacrimal artery. A. lacrimalis. Exits lateral to the ophthalmic artery and passes to the lacrimal gland along the upper margin of the lateral rectus muscle. A

Anastomotic branch [with middle meningeal artery]. Ramus anastomoticus [cum a. meningea media]. Branch that anastomoses with the orbital branch of the middle meningeal artery. It occasionally replaces the ophthalmic artery. A Lateral palpebral arteries. Aa. palpebrales laterales. They arises from the lacrimal artery and pass lateral to the eyelids. A B 5 a Recurrent meningeal branch. Ramus mening-eus recurrens. Branch of the lacrimal artery that runs through the superior orbital fissure into the cranial cavity. It anastomoses with the anasto-motic branch.

Short posterior ciliary arteries. Aa. ciliares posteriores breves. 10-15 arteries which penetrate the sclera circumferentially around the optic nerve and supply the choroid. A Long posterior ciliary arteries. Aa. ciliares posteriores longae. Lateral and medial arteries which pass between the sclera and choroid to the ciliary body. A B

Muscular arteries. Branches that supply the eye muscles.

Anterior ciliary arteries. Aa. ciliares anteriores. They arise from the lacrimal artery or muscular branches, penetrate the sclera and supply the choroid and ciliary body. A B

10 Anterior conjunctival arteries. Aa. conjuncti-vales anteriores. Branches arising from the anterior ciliary arteries and supplying the conjunc-tivae. B

11 Posterior conjunctival arteries. Aa. conjuncti-vales posteriores. They arise from the lacrimal and supraorbital arteries. A

12 Episcleral arteries. Aa. episclerales. Twigs of the anterior ciliary arteries situated on the sclera. B

13 Supraorbital artery. A. supraorbitalis [[a. frontalis lat. ]]. It passes below the roof of the orbit and through the supraorbital notch to the forehead. A B

13 a Diploic branch. Ramus diploicus. Branch to bone.

14 Posterior ethmoidal artery. A. ethmoidalis posterior. It passes below the superior oblique muscle and through the posterior ethmoidal foramen to the posterior ethmoidal air cells and the posterior part of the nasal cavity. A

15 Anterior ethmoidal artery. A. ethmoidalis anterior. It passes upward through the anterior eth-moidal foramen into the anterior cranial fossa and through the cribriform plate into the nasal cavity and frontal sinus as well as the anterior ethmoidal cells. A

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Essentials of Human Physiology

Essentials of Human Physiology

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