The nictitating membrane (from Latin nictare, to blink) is a transparent or translucent third eyelid present in some animals that can be drawn across the...
8 KB (915 words) - 15:08, 21 September 2024
Tears (section Nictitating membrane)
translucent third eyelid called a nictitating membrane, while others have a vestigial nictitating membrane. The membrane works to protect and moisten the...
23 KB (1,897 words) - 00:59, 16 June 2024
generally characterized by lacking traits such as an anal fin, nictitating membrane, or suborbital shelves in the cranium. Squalomorphii sharks are also...
5 KB (508 words) - 00:20, 2 December 2023
Cherry eye is a disorder of the nictitating membrane (NM), also called the third eyelid, present in the eyes of dogs and cats. Cherry eye is most often...
11 KB (1,308 words) - 12:27, 4 June 2024
by the nictitating membrane, a third concealed eyelid that sweeps horizontally across the eye like a windscreen wiper. The nictitating membrane also covers...
68 KB (8,329 words) - 15:14, 1 September 2024
dystrophy, distichiasis, entropion, eversion of the cartilage of the nictitating membrane, generalised demodicosis, medial canthal pocket syndrome, refractory...
12 KB (1,093 words) - 10:27, 7 September 2024
eyeball, restricting movement. It is the vestigial remnant of the nictitating membrane (the "third eyelid") which is drawn across the eye for protection...
3 KB (271 words) - 22:30, 28 July 2024
Instead the eye is lubricated by the nictitating membrane, a third eyelid that moves horizontally. The nictitating membrane also covers the eye and acts as...
235 KB (23,454 words) - 17:30, 16 October 2024
especially in animals without eyelids. In squamate reptiles both the nictitating membrane and the eyelids have been suggested as the evolutionary origin of...
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cranial cruciate ligament rupture, eversion of the cartilage of the nictitating membrane, hereditary lupoid dermatosis, progressive retinal atrophy, nasal...
13 KB (1,175 words) - 20:34, 8 September 2024
with vertical slits. They do not have a true eyelid, but rather a nictitating membrane that allows light to enter the eye so that they will awaken when...
30 KB (3,509 words) - 18:43, 23 September 2024
rather than representing true trichromatic vision. Cats also have a nictitating membrane, allowing them to blink without hindering their vision. The domestic...
161 KB (16,541 words) - 14:43, 16 October 2024
found in other animals, some of which may have a third eyelid, or nictitating membrane. A vestige of this in humans survives as the plica semilunaris. The...
23 KB (2,736 words) - 16:46, 7 October 2024
patella, hip dysplasia, and Legg-Calvé-Perthes disease. Prolapsed nictitating membrane gland is also common in puggles despite not being prevalent in either...
4 KB (422 words) - 21:02, 12 October 2024
the inside corner of the eye. It is the vestigial remnant of the nictitating membrane, i.e., third eyelid, an organ that is fully functional in some other...
53 KB (6,659 words) - 08:05, 8 October 2024
medicine, signs can include partial closure of the third eyelid, or nictitating membrane.[citation needed] Horner's syndrome is usually acquired as a result...
14 KB (1,536 words) - 00:18, 21 August 2024
tetrapods (reptiles, amphibians, birds and mammals) that possess a nictitating membrane. The gland can be compound tubular or compound tubuloalveolar, and...
3 KB (340 words) - 02:39, 27 December 2022
Glossary of ichthyology (redirect from Branchiostegal membrane)
Pertaining to the nostrils. nasoral Between the nostrils and mouth. nictitating membrane An inner eyelid. notochord A rudimentary of embryonic spinal column...
23 KB (2,662 words) - 22:26, 15 September 2024
rodents in the dark. Most reptiles, as well as birds, possess a nictitating membrane, a translucent third eyelid which is drawn over the eye from the...
138 KB (14,814 words) - 19:31, 18 October 2024
sharks. Members of this order are characterized by the presence of a nictitating membrane over the eye, two dorsal fins, an anal fin, and five gill slits....
24 KB (837 words) - 21:41, 8 September 2024
flatworm Oculotrema hippopotami infests hippopotamus eyes, mainly the nictitating membrane. It is the only monogenean species (which normally live on fish)...
76 KB (8,439 words) - 16:44, 13 October 2024
usually possess spines, they usually have a sharp head, no anal fin or nictitating membrane, and five to seven gill slits. In most other respects, however, they...
13 KB (819 words) - 09:30, 1 May 2024
making up lies about John grabbing her. Libby sees that John has a nictitating membrane and tries to pull Michelle away from John but Michelle slaps Libby...
7 KB (810 words) - 21:54, 11 September 2024
sharks. Members of the orders are characterized by the presence of a nictitating membrane over the eye, two dorsal fins, an anal fin, and five gill slits....
7 KB (649 words) - 22:48, 10 October 2024
Male portrait Female portrait Just after a dive - showing clear nictitating membrane In flight over Rideau River, Ottawa, Ontario With a northern crayfish...
14 KB (1,385 words) - 01:20, 22 August 2024
lapwing blinking the left eye (the nictitating membrane is used rather than the eyelids). Note origin of the membrane from the medial canthus. A masked...
15 KB (1,646 words) - 08:14, 7 August 2024
small and located well above and behind the eyes. The eyes have no nictitating membrane. The frilled sharks of the genus Chlamydoselachus are very different...
21 KB (1,482 words) - 10:41, 14 June 2024
species, like other dippers, is equipped with an extra eyelid called a nictitating membrane that allows it to see underwater, and scales that close its nostrils...
9 KB (967 words) - 07:56, 7 March 2024
may form a part of the courtship display, such as in weaver birds. nictitating membrane Also, third eyelid. A transparent or translucent third eyelid that...
288 KB (31,040 words) - 11:41, 3 October 2024
sharks. Members of this order are characterized by the presence of a nictitating membrane over the eyes, two dorsal fins, an anal fin, and five gill slits...
51 KB (5,408 words) - 02:00, 17 October 2024