Lectures on Histology: Delivered at the Royal College of Surgeons of England, in the Session[s] 1850-[52], Band 1H. Bailliere, 1852 - 413 Seiten |
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acid adipocire adipose cells adipose tissue adult animals appearance areolar tissue arrangement articular cartilage articular lamella articular surface blood-vessels bone bordered pores bundles canaliculi canals capillaries cartilage-cells cavity cell-wall colour composed consists contained crystals cuticle deposit described developed diameters discs disease ducts elongated cells Enchondroma epithelium especially examined example exhibit fasciculus fatty degeneration femur fibro-cartilage fibrous tissue fluid granular granules hairs hexagonal human subject humerus injected lacunæ layer ligamentum nuchæ lobules London loops magnified mass matrix matter microscope minute myoline nucleus numerous occur osseous osseous tissue ossification outer oval peculiar pigment plants portion raphides readily represented in Fig resembling sarcolemma scalariform seed seen shaft shown in Fig silica skin specimen spermaceti spiral fibre spiral vessel starch stellate structure structureless substance synovial membrane tendon termed testa thin tion transverse section tubes tumours unrolled vascular vegetable vertebræ vertical section voluntary muscle walls white fibres woody fibres
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Seite 198 - Quekett, the first trace of this disease is marked by a disturbance of the particles of myoline, which appear as so many very minute granules scattered irregularly within the sarcolemma, leading one to suppose that the delicate cell around each particle had given way, thereby allowing the myoline to escape, and destroying all regularity both of the transverse and longitudinal markings. As the disease progresses, the myoline is replaced by minute highlyrefracting globules of oil, until at last the...
Seite 198 - Before fatty degeneration commences in voluntary muscles, the transverse striee disappear; and I have long known that the first trace of this disease is marked by a disturbance of the particles of myoline, which appear as so many very minute granules scattered irregularly within the sarcolemma, leading one to suppose that the delicate...
Seite viii - However striking the difference between an animal and a plant may be seen at first sight, in the higher groups a more extended examination shows that animals and plants gradually approach each other as we descend In the scale, until we meet in a common centre— the simple individual cell.
Seite 42 - ... conservation of objects ; some of them are as large as the l-40th of an inch, others are as small as the l-1000th. They occur in all parts of the plant ; in the stem, bark, leaves, stipules, sepals, petals, fruit, root, and even in the pollen, with few exceptions. They are always situated in the interior of cells, and not, as has been stated by Raspail and others, in the intercellular passages.* Some of the containing cells become much elongated ; but still the cell-wall can be readily traced....
Seite 70 - The ripe globule spontaneously opens. The filaments also expand and separate into clusters. They are so numerous, that I have not been able to decide upon their exact number. " The tube-like filaments are divided into numerous compartments, in which are produced the most extraordinary objects 1 have ever observed of vegetable origin.
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Seite 184 - I find to be incorrect, and it cost me no small amount of labour to prove it. Fat certainly does exist in insects, crustacea, and mollusca, but no true adipose cell is ever present; it could not be nourished without its accompanying blood-vessels, and these are not found in invertebrata. The tissue resembling adipose tissue usually belongs to the liver or other glandular organ, and the fat exists in its cells in the form of oil. In the liver of the larva of a Goat Moth...