Last edited by Faegor
Sunday, August 9, 2020 | History

1 edition of Observations on the ciliary muscle in fish, birds and quadrupeds found in the catalog.

Observations on the ciliary muscle in fish, birds and quadrupeds

by Robert James Lee

  • 50 Want to read
  • 18 Currently reading

Published by printed by C. J. Clay...at the university Press in Cambridge .
Written in English

    Subjects:
  • Fishes,
  • Quadrupeds,
  • Muscles,
  • Physiology,
  • Birds

  • Edition Notes

    Other titlesJournal of anatomy and physiology.
    StatementBy R. J. Lee
    ContributionsLee, Robert James, 1793-1877 former owner, Middlesex Hospital, St. Thomas"s Hospital. Medical School Library, King"s College London
    The Physical Object
    Format[electronic resource] /
    Pagination10 p. :
    Number of Pages10
    ID Numbers
    Open LibraryOL26252534M

    Observations on the ciliary muscle in fish, birds and quadrupeds./ Birds Electronic books Fishes Muscles physiology Quadrupeds. On the minute structure and movements of voluntary muscle. Amphibians Anatomy, Comparative Birds Muscles Nervous system. Zur vergleichenden Anatomie: der Muskulatur des Beckens und der hinteren Gliedmasse. When we look at near objects the ciliary muscles contract causing the lens to bulge and become more convex, this was also illustrated by our results. 6. This model differs from the eye in the following ways. The focal length in the human eye will be a lot shorter. The size of the lens is controlled by ciliary muscles in the eye.

      Ciliary Structure in Vertebrates. Much of our understanding of ciliary constituents is based on observations made from flagella isolated from the green alga Chlamydomonas (Dutcher, ).The archetypical cilium extends from the apical membrane of cells and relies on a microtubule scaffold (Figure 1A).Surrounded by a plasma membrane, the ciliary axoneme begins as a radial array . The muscle cells of the iris are smooth muscle in mammals and amphibians, but are striated muscle in reptiles (including birds). Many fish have neither, and, as a result, their irides are unable to dilate and contract, so that the pupil always remains of a fixed size.

      In human eyes, this size variation of the pupil is controlled by a circular ciliary muscle, but this limits the amount of size variation. In cats however, the same process is controlled by two, shutter-like ciliary muscles, which gives the cat it’s characteristic slit-like pupil in bright light conditions. The ciliary muscle is responsible for accommodation. The ciliary epithelium is composed of the inner non-pigmented layer (barely visible here at arrow 4) and outer pigmented layer (arrows 3). The aqueous is made by the non-pigmented epithelium. The beginning of the pars plicata shows the undulations in the ciliary epithelium.


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Observations on the ciliary muscle in fish, birds and quadrupeds by Robert James Lee Download PDF EPUB FB2

Title. Observations on the ciliary muscle in fish, birds and quadrupeds./ Related Titles. Contained In: Medical Heritage Library.

Lee, Robert James, Lee, Robert James,former owner King's College London. King’s College London. This banner text can have markup. web; books; video; audio; software; images. Observations on the ciliary muscle in fish, birds and quadrupeds./ By Robert James Lee, Robert James Lee, King\u27s College London., Middlesex Hospital.

and St. Thomas\u27s Hospital. The Ciliary Muscle in Fish, Birds, and Quadrupeds. (PMID PMCID:PMC) Abstract Citations; Related Articles; Data; BioEntities; External Links ' ' Lee RJ Journal of Anatomy and Physiology [01 Nov3(Pt 1)] Type: research Cited by: 1.

MAY I be allowed through your columns to direct the attention of physiologists and anatomists to certain special features in ocular accommodation, and in the movements of the iris in birds Author: C.

Bond. Abstract Functional Anatomy of the Ciliary Muscle in Birds and Humans The functional aaatomy of the avian ciliary muscle has beai difncdt to describe due to its inaccessible location inside the thesis compares the ciliary muscle of birds and humam in both the relaxed and contracted states.

The two groups both accommodate by changing the shape of the lem, although the ciliary body and. Explore the Wellcome Library's digitised books, archives, manuscripts, film and sound, paintings, posters and more. An illustration of an open book. Books. An illustration of two cells of a film strip. Video.

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Images. An illustration of a heart shape Donate. An illustration of text ellipses. Search the history of over billion web pages on the Internet. This banner text can have markup. web; books; video; audio; software; images; Toggle navigation.

Full text Full text is available as a scanned copy of the original print version. Get a printable copy (PDF file) of the complete article (M), or click on a page image below to browse page by page. Ciliaris muscle, muscle of the ciliary body of the eye, between the sclera (white of the eye) and the fine ligaments that suspend the lens.

It is composed of both longitudinal and circular fibres and serves to change the shape of the lens, enabling the eye to focus upon near or distant. The ciliary muscle of mammals, and its homologues in fish and amphibia are contracted via cholinergic muscarinic mechanisms while in birds and reptiles, acetylcholine acts via nicotinic receptors.

In birds and reptiles the ciliary muscle is usually split into two parts, of which the anterior portion changes the corneal radius of curvature. could underlie this observation.

The purpose of. Inference to be drawn from these observations. The ciliary muscle may contract on one side only at a time. In near accommodation the two internal recti muscles. New and Enlarged Edition, completed by the insertion of above One Hundred Birds omitted in the original Work, and by valuable Notes and Life of the Author by Sir.

ACCOMMODATIVE ANATOMY. Perhaps the most important accommodative anatomical structure is the ciliary muscle that resides beneath the anterior sclera at the limbal region of the eye, posterior to the scleral spur and anterior to the ora serrata of the retina (Figure 1).The ciliary muscle is composed of muscle fibres of three differing orientations, longitudinal, radial and circular and serves as.

Specimens were prepared for microscopic observation of ciliary beating of the lateral ciliated cells of the gill epithelium by removing the shells, mantle and most of the internal organs from the gills and ganglia.

CG preparations were prepared by dissecting the animals so that the gill with the ipsilateral branchial nerve, VG, cerebrovisceral. Ciliary muscle.

The ciliary muscle consists of three separate muscle fibers: longitudinal, circular and oblique. The longitudinal fibers (meridional), which are the most external, attach the ciliary body anteriorly to the scleral spur and trabecular meshwork at the limbus, and posteriorly to the supracoroidal lamina (fibers connecting choroid and sclera) as far back as the equator of the.

Book January w Reads How we measure 'reads' A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a. What is the ciliary muscle derived from.

Mesoderm. What is the Tyndall Phenomenon. If breakdown of blood- aqueous barrier occurs, cells and flares will be visible Can form Hypopyon. What is a hyphema. A tear a break in the iris causing blood vessels to enter from the major cycle. THIS SET IS OFTEN IN FOLDERS WITH.

The ciliary body also comprises cells from the neural crest, which form the ciliary muscle. The iris muscles derive from the outer layer of the optic cup. Stem cells have been isolated from the ciliary body and iris, and Muller glia in the retina have been found to divide and generate neurons in the early posthatch chick.Explore the latest full-text research PDFs, articles, conference papers, preprints and more on ANIMAL LOCOMOTION.

Find methods information, sources, references or conduct a literature review on.The Ciliary muscle (m. ciliaris; Bowman's muscle) consists of unstriped fibers: it forms a grayish, semitransparent, circular band, about 3 mm. broad, on the outer surface of the fore-part of the choroid. It is thickest in front, and consists mainly of two sets of fibers.