(n.) The part of the oviduct of certain trematode worms in which the ova are completed and furnished with a shell.
Example Sentences:
(1) Caulobothrium longicolle (Linton, 1890) and Phyllobothrium gracile (Weld, 1855) (Cestoda: Tetraphyllidea, Phyllobothriidae) have the same embryonic development with the following characteristic data: --a small number of vitelline cells (2 or 3) pass with the zygote in the ootype;--a non operculate thin egg-shell;--the entire and equal zyhote cleavage following by unequal divisions leading to the formation of four blastomere types (Macromeres, secondary Macromere, Mesomeres and Micromeres);--the differentiation of two syncytial embryonic envelopes during the preoncospheral phase.
(2) Processes from these cells extend into the wall of the ootype.
(3) Cilia and lamellae line the luminal surface of the oviduct and ootype, the lamellae running unidirectionally along the duct.
(4) The formation of the egg mass in the ootype, containing the oocyte, vitelline cells, numerous spermatozoa and Mehlis' gland secretion marks the beginning of eggshell formation.
(5) The role of DB cells (which enter the lumen more commonly in the ootype near the oviduct) remains unknown.
(6) In the peripheral nervous system, immunoreactivity occurs in the nerve plexuses supplying the subtegumental musculature, the oral and ventral suckers, and the muscular lining of the male and female reproductive ducts, including the ootype, uterus, cirrus pouch and gonopore.
(7) The secretions produced by the Mehlis' gland and the distal ootype in Schistosoma mansoni were identified as neutral glycoproteins.
(8) The cell bodies are positioned in the parenchyma surrounding the ootype and taper to axon-like processes that extend to the ootype wall.
(9) In both unisexual and paired mature females part of the lining of the ootype is reactive, especially near the entrance of the vitelline duct; this demonstrates that females can make ecdysteroids without mal contact.
(10) Cells displaying immunoreactivity to PYY and FMRFamide lie amongst the Mehlis' gland cells that surround the ootype.
(11) Processes of the two cell types converge on the ootype-proximal uterine wall, pass through the epithelium, and finally open into the lumen.
(12) Narrow cytoplasmic channels supported by microtubules deliver these secretory bodies to the ootype.
(13) All of 10 sera from patients with trichinellosis also reacted with schistosomes by immunofluorescence essentially recognizing testes, ovaries, ootype epithelium and ducts of the reproductive system.
(14) One group of PP-immunoreactive cells occurs at the junction of the vitelline and ovovitelline ducts, whilst another group is situated at the entrance to the uterus from the ootype.
(15) An ootype and a type of accessory reproductive gland not known from other Kronborgia spp.
(16) The terminal regions of these processes branch and anastomose and, in places, the swollen endings or varicosities form synaptic appositions with the muscle fibres in the ootype wall.
(17) Intense peptide immunoreactivity was identified in fibres in the wall of the ootype and in a surrounding population (greater than 100) of somata that were situated beyond Mehlis' gland cells and all of which were connected to the ootype wall by fine cytoplasmic connectives.
(18) testis 0-94 X 0.94; seminal vesicle 0-82 X 0-24; ootype 0-21 X 0-41; ovary 0-41 X 0-34; and egg 121 X 83 micrometer.
(19) It is concluded that the cells are neurosecretory in appearance and that, functionally, their secretions may serve to regulate ootype motility and thereby help co-ordinate egg production in the worm.
(20) In the peripheral nervous system, similar immunoreactivity occurs in the nerve plexuses supplying the sub-tegumental muscle layers and the muscular lining of various reproductive ducts, including the ootype, uterus and cirrus pouch.
Oviduct
Definition:
(n.) A tube, or duct, for the passage of ova from the ovary to the exterior of the animal or to the part where further development takes place. In mammals the oviducts are also called Fallopian tubes.
Example Sentences:
(1) Scintigraphic pictures of the uterine cavity and oviducts were obtained with a Jumbo Toshiba gamma-camera; they were subsequently analysed by an Informatek SIMIS-3 data processing system.
(2) Females were killed at various times after the onset of mating or artificial insemination, oviducts were fixed and sectioned serially, and spermatozoa were counted individually as to their location in the oviduct.
(3) The onset of vitamin A deficiency had no effect on oviduct growth in these chicks; even though vitamin A-deficient chicks showed a severe decline in growth rate while controls (fed the same diet supplemented with retinyl palmitate) continued to grow, estrogen stimulated resulted in similar oviduct size.
(4) In contrast, in paraffin as well as in frozen sections of chick oviduct, fixed by immersion or in vapor, PR was exclusively nuclear, including in the absence of progesterone, and the intensity of immunostaining was not modified by progesterone treatment.
(5) Cd accumulated dose and time dependently in oviducts and induced a dose-dependent depression and delay in the rise of ovarian P secretion during days 1 through 5 of pregnancy.
(6) Likewise, [3H]estradiol-receptor complexes from rabbit uterus, Squalus oviduct, or mouse testis bound minimally to Squalus testicular chromatin.
(7) The results suggest that a cytoplasmic progesterone receptor is present in the pituitary and hypothalamic tissue, as well as in the oviduct magnum, of the hen.
(8) This study documents a molecular change in the murine ovum related to its exposure to oviductal fluid.
(9) The oviductal E2 concentration during and after a short iv infusion was never lower than that associated with a sc injection.
(10) In another experiment, animals were sacrificed on estrus of the next cycle and the oviducts examined for the number of ova.
(11) Detection of PGE2-specific binding in the oviductal isthmus on Day 2 and Day 5 indicates that the oviduct is responsive to PGE2 when it is capable of transporting equine embryos.
(12) The effects of media (TCM199 vs. synthetic oviduct fluid, SOF), sera (foetal calf serum, FCS vs. human serum, HS), gas atmosphere (5% CO2 in air vs. 5% CO2, 5% O2 and 90% N2) and coculture with bovine oviduct epithelial cells (cells vs. no cells) on the in-vitro development of in-vitro matured and fertilized bovine oocytes were examined.
(13) Freshly collected semen (.1 ml) was introduced into the oviduct of each hen every week.
(14) Sequential P treatment reduced the degree of nuclear staining in the oviduct and endometrium below that found in spayed animals; however, such treatment only lowered the amount of cytosolic, not nuclear, ER significantly below spayed levels in those same tissues.
(15) Sperm are found within the oviductal lumen and endometrial glands from the posterior tube to the anterior uterus throughout the reproductive cycle.
(16) Although secretions from ampullar and isthmic oviduct and uterus contained many proteins in common, each area also produced its own characteristic proteins.
(17) These observations suggest that these oviductal components may play an important role in the first steps of the hamster reproductive process.
(18) Steroid hormone pretreatment significantly affects the responsiveness of the oviductal tissue to AVT and ACh.
(19) Some animals were used to monitor blood and tissue levels of E2 (oviduct and diaphragm).
(20) It is suggested that the beta inhibitory activity of the uterus and the alpha excitatory activity of the rest of the oviduct are involved in the regulation of ovum transport.