. Practical anatomy of the rabbit : an elementary laboratory textbook in mammalian anatomy . Rabbits; Anatomy, Comparative. The "Head and Neck. 249 inserted on the medial portion of the eyeball around the optic nerve. It consists of four distinct parts. (f) The Harderian gland (gl. Harderiana) is a large compact gland lying in the anterior portion of the orbit. It is com- posed of two portions, one of which is greyish red, the other white. The duct opens on the inner surface of i:he third eyelid. (g) The lacrimal gland (gl. lacrimalis) is a much smaller, also darker, structure lying close
. Practical anatomy of the rabbit : an elementary laboratory textbook in mammalian anatomy . Rabbits; Anatomy, Comparative. The "Head and Neck. 249 inserted on the medial portion of the eyeball around the optic nerve. It consists of four distinct parts. (f) The Harderian gland (gl. Harderiana) is a large compact gland lying in the anterior portion of the orbit. It is com- posed of two portions, one of which is greyish red, the other white. The duct opens on the inner surface of i:he third eyelid. (g) The lacrimal gland (gl. lacrimalis) is a much smaller, also darker, structure lying close to the skull in the temporal angle of the orbit. It communicates by several fine ducts with the inner surface of the upper eyelid. The infraorbital gland (gl. infraorbitalis) is a diffuse white or yellowish gland lying in the anterovenfral angle of the orbit immediately medial to the zygo- matic arch. The gland is one of the salivary series, its duct passing downward and opening through the mucous membrane of the cheek into the cavity of the mouth. To examine the structure of the eye, the muscles of the eyeball should be divid- ed at their insertions, and the whole structure re- moved. The second cra- nial or optic nerve (n. opticus) is divided; also the ophthalmic artery, a small branch of the internal carotid which accompanies the nerve outward from the optic foramen to the eyeball. The eye may be divided by- a circular incision into medial and lateral hemispheres, the lateral hemisphere, containing the lens, being again divided vertically. The parts should be examined under water. The chief structures (Fig. 80) comprise: (a) The fibrous tunic (tunica fibrosa oculi), the strong peri- pheral coat enclosing the whole structure. It is divisible into a medial portion, the sclera, or sclerotic coat, a thick. Fig. 80. Diagram of the parts of the eye in vertical section: , anterior chamber; , ciliary body; ch., chorioidea; Co., cornea; , posterior chamber; , ciliary
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectanatomy, bookyear1921
