in diameter, with little yolk, and the embryos provided with large trophic vesicles (Willey).
The embryo passes through three stages - (I) still enclosed within the egg and living on its own yolk; (2) free, within the vitelline mass, which is directly swallowed by the mouth; (3) there is no more vitelline mass, but the embryo is possessed of long external gills, which serve for an exchange of nutritive fluid through the maternal uterus, these gills functioning in the same way as the chorionic villi of the mammalian egg.
Nevertheless, instances were adduced where the most careful heating of yolk of egg, milk, hay-infusions, &c., had failed, - the boiled infusions, &c., turning putrid and swarming with bacteria after a few hours.
Ova large and heavily charged with yolk, and provided with a stoutish shell.
ov., ovaries; sh.g., shell gland; y.g., yolk gland; r.s., receptaculum seminis; ut., uterus; X 7.
proper, the other, the vitellarium, much more conspicuous and usually consisting of a definite number of large cells, producing yolk material for the growth of the egg.
The hypoblast is formed either by a definite invagination or by the immigration of isolated cells, known as vitellophags, which wander through the yolk and later become associated into a definite mesenteron, or by some combination of these two methods.
The relative size of the eggs and the amount of nutritive yolk which they contain are generally much greater in those forms which have a direct development.
Within the yolk the nuclei of some "yolk cells" can be distinguished.
Parallels may be found in "Prairie oyster," the yolk of an egg with vinegar, pepper, &c. added; or "Scotch woodcock," a savoury of buttered eggs on anchovy toast.
The yolk prepared by the latter is conducted by one or more specialized ducts to the oviduct and the point of union is distinguished by the opening of a " shell-gland " which secretes a membrane around the conjoined mass of ovum and yolk.
yolk mixture to glaze the pastry.
In most Ectoprocta, however, the development takes place internally or in an ovicell, and a considerable quantity of yolk is present.
yolk with the sugar.
Beat the egg and egg yolk with the sugar.
They resemble those of the sprat and pilchard in having a segmented yolk and there is no oil globule.
The segmentation of the fertilized nucleus results in the formation of a number of nuclei which arrange themselves around the periphery of the egg and, the protoplasm surrounding them becoming constricted, a blastoderm or layer of cells, enclosing the central yolk, is formed.
Kowalevsky or a bug is invaginated into the yolk at the head end, the portion of (1871 and 1887) on the embryology of the water-beetle Hydrophilus the blastoderm necessarily pushed in with it forming the amnion.
Caldwell showed that it was filled with yolk, and finally established the fact that Platypus as well as Echidna is oviparous.
Ova of considerable size, but with only a small quantity of yolk.
yolk sac tumor was characterized by a range of expression, which mirrored its morphologic variation.
yolk sac infections.
yolk, and it is practically g.s., Gill-slit.
Lightly whisk eggs and extra yolk together in a large bowl.
Add 1 egg yolk per cup of the mixture.
Brush with the egg yolk mixed with a little cold water.
All the nutrients required for embryo development are already present within the fertilized egg, stored in the form of yolk protein molecules.
In water, their center of mass was ventral to the muscles in the yolk mass.
yolk protein molecules.
Coincidently, to allow of fertilization and the escape of excess of yolk, and of spermatozoa, other accessory ducts open at this point.
The fertilized ova, provided with yolk and a shell, are next transferred to the "uterus" along which they travel to the exterior.
From the oviduct a long duct full of yolk passes backwards almost to the hinder end of the body and ends blindly in a globular dilatation just below the skin.
F intestine and so gets rid of the excess of yolk.
In the Cape species the eggs are smaller, though still of considerable size; the yolk is much less developed, and the egg membrane is thinner though dense.
Ova large, with much yolk and thick membrane, like those of Australasian species; embryos with slit-like blastopore and of very different ages in the same uterus, probably born all the year round.
maculosa, but as a rule only one fully develops in each uterus, the embryo being nourished on the yolk of the other eggs, which more or less dissolve to form a large mass of nutrient matter.
The Australasian species come nearest to laying eggs, inasmuch as the eggs are large, full of yolk, and enclosed in a shell; but development normally takes place in the uterus, though abnormally, incompletely developed eggs are extruded.
Expansion of the extra-embryonic coelom cavity allows the yolk sac and allantois to expand into the coelom cavity allows the yolk sac and allantois to expand into the coelom cavity from the gut of the embryo.
If the egg yolk is not convex and firm, don't consume the egg.
In a mixing bowl, beat together the dissolved corn flour, egg, egg yolk and salt.
egg yolk mixture to glaze the pastry.
Does the human fetus temporarily develop gills, a tail, and a yolk sac?
Melt 40g (1½oz) reduced fat margarine with 75g (2¾oz) dark chocolate, cool slightly then beat in an egg yolk.
Take too long to boil an egg and you'll be making mayonnaise instead of enjoying runny yolk soldiers.
Brush the pastry case with the egg yolk mixture to glaze the pastry.
Good sources are:- liver, kidney, heart, egg yolk, legumes, cocoa, cane molasses, shellfish and parsley.
Simmer gently for about 3 minutes until the egg is cooked, but the yolk is still runny.
Is yolk sac size in hatching fishes a good indicator of how long a fish can survive without food?
Brush with the egg yolk and milk mixture, sprinkle with caster sugar.
Foods that contain vitamin D include oily fish, egg yolk, live yogurt.
whisk eggs and extra yolk together in a large bowl.
add 1 egg yolk per cup of the mixture.
yolk mixed with a little cold water.
yolk sac size in hatching fishes a good indicator of how long a fish can survive without food?
The young larvae, nourished by the yolk xIx.
- Among the Hexapoda, as in Arthropods generally, the egg is large, containing an accumulation of yolk for the nourishment of the growing embryo.
stated that in the Muscidae, while the anterior endoderm-rudiment The embryo is invaginated into the yolk, but the surface edges of arises as Kowalevsky had observed, the posterior part of the " midthe blastoderm do not close over, so that a groove or pore puts gut " has its origin as a direct outgrowth from the proctodaeum.
The first and last cells that migrate from the yolk.
Thus in ectoparasitic Trematodes, the paired vagina transmits spermatozoa to the egg: and a canal carries off yolk from this point of junction either to the gut for resorption or to the exterior for exudation.
Yolk sac tumor was characterized by a range of expression, which mirrored its morphologic variation.
Often young birds acquire the infections from the hen or through navel or yolk sac infections.
Separate the egg, beating both the yolk and white separately.
Add the sugar and salt to the yolk and mix well.
Brush the loaves with beaten egg yolk and sprinkle with sesame seeds.
This recipe originally called for an egg yolk.
By replacing it with one tablespoon of ground flax seed whipped with a quarter cup of boiling water you remove all the fat from the egg yolk.
Separate the egg yolk from the egg white, and set aside in two bowls.
In a blender or food processor, combine beef broth, oil, egg yolk and molasses until mixed very well.
Another nice choice is the illusion neckline that consists of a satin band that connects to the gown with a sheer yolk, giving the illusion that the bride is wearing a choker necklace.
Crack two eggs on their head and be sure that the yolk breaks for maximum effect.
A diet free of phytanic acid (found in dairy products, tuna, cod, haddock, lamb, stewed beef, white bread, white rice, boiled potatoes, and egg yolk) can reduce some of the symptoms.
The CDC estimates that one of every 50 consumers is exposed to a contaminated egg yolk each year, although thorough cooking kills the bacteria, making the food harmless.
To make vitamin D, cholesterol, a substance widely distributed in animal tissues, the yolk of eggs, and various oils and fats, is necessary.
Use a piping bag or a zip top bag with one corner cut off to pipe the yolk mixture back into the yolk space in the egg white.
When hard-boiled eggs are overcooked, the yolks develop a green tinge around the yolk, which in turn will give your egg salad a green tint.
Thirty minutes before serving the eggnog, stir the milk into the chilled yolk mixture.
Gently fold the egg white mixture into the egg yolk mixture.
Best sources: egg yolk, meat, low-fat & nonfat milk, dark green vegetables; also made by microorganisms in intestinal tract.
Deviled egg: White sweat suit with yellow "yolk" painted on or made from felt; also wear devil horns.
You can make eggs easier on your diet by separating out the yolk and cooking with egg whites only.
Try egg substitutes or egg products in which the yolk has been removed.
Many people skip the yolk and just eat the egg whites, which are healthier.
Slowly add one egg yolk at a time, and beat until the mixture is smooth and creamy.
Make traditional deviled eggs, but add red food coloring to the yolk mixture.
Fill the hard boiled egg white back up with the yolk mixture and then place a small black olive in the center.
Crack an egg carefully into a bowl and scoop away the egg yolk.
You will not need the egg yolk for this application so set it aside for use later.
Leave the yolk on your acne for 20 to 30 minutes, then wash it away.
Ova large and with much yolk.
Eggs minute with little yolk.
part by the yolk, and in part by those anterior and posterior rudiments Its composition has been the subject of prolonged difference of which usually form the mesenteron, but that in some Hexapoda opinion.
The germ band evidently marks the ventral aspect of the developing insect, whose body must be completed by the extension of the embryo so as to enclose the yolk dorsally.
Wheeler, the amnion is ruptured and turned back from covering the germ band, enclosing the yolk dorsally and becoming finally absorbed, as the ectoderm of the germ band itself spreads to form the dorsal wall.
In some midges and in caddis-flies the serosa becomes ruptured and absorbed, while the germ band, still clothed with the amnion, grows around the yolk.
In moths and certain saw-flies there is no rupture of the membranes; the Russian zoologists Tichomirov and Kovalevsky have described the growth of both amnion and embryonic ectoderm around the yolk, the embryo being thus completely enclosed until hatching time by both amnion and serosa.
Other phosphoglobulins are vitelline, found in the yolk of hens eggs, and ichthulin, found in the eggs of fish.
means of conveying superfluous yolk to the gut, where it may serve as food.
In the neotropical species the egg is minute, and almost entirely devoid of yolk.
In Hemiptera only eleven and in Collembola only yolk, and that the mesenteric epithelium becomes reinforced by six abdominal segments have been detected.
The word usage examples above have been gathered from various sources to reflect current and historial usage. They do not represent the opinions of YourDictionary.com.