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The style is a hollow tube in some plants, such as lilies, or has transmitting tissue through which the pollen tubes grow. [ 15 ] The stigma (from Ancient Greek στίγμα , stigma , meaning mark or puncture) is usually found at the tip of the style, the portion of the carpel(s) that receives pollen (male gametophytes ).
The surgery is also called ovariectomy, but this term is mostly used in reference to non-human animals, e.g. the surgical removal of ovaries from laboratory animals. Removal of the ovaries of females is the biological equivalent of castration of males; the term castration is only occasionally used in the medical literature to refer to ...
In flowering plants, the flowers contain the sex organs. [26] Sexual reproduction in flowering plants involves the union of the male and female germ cells, sperm and egg cells respectively. Pollen is produced in stamens and is carried to the pistil or carpel, which has the ovule at its base where fertilization can take place. Within each pollen ...
Prophylactic oophorectomy is the removal of the ovaries and is either done as a planned response to the genetic risk of ovarian or breast cancer, especially among women whom have a hereditary family history of ovarian cancer, have the BRCA1 or BRCA2 mutations, [17] or have developed breast cancer in the past. [18]
Pelvic exenteration is an option in cases of very advanced or recurrent cancer, for which less radical surgical options are not technically possible or would not be sufficient to remove all the tumor. This procedure is performed for several types of cancer including genitourinary cancer, [1] and colorectal cancers. [2]
The follicular fluid is delivered to a technician in the IVF laboratory to identify and quantify the ova. Once the ovarian follicles have been aspirated on one ovary, the needle is withdrawn and the procedure is repeated on the other ovary. It is not unusual to remove 20 oocytes as patients are generally hyperstimulated in advance of this ...
The stigma, together with the style and ovary (typically called the stigma-style-ovary system) comprises the pistil, which is part of the gynoecium or female reproductive organ of a plant. The stigma itself forms the distal portion of the style, or stylodia, and is composed of stigmatic papillae , the cells of which are receptive to pollen.
A mature female big-cone pine (Pinus coulteri) cone, the heaviest pine cone A young female cone on a Norway spruce (Picea abies) Immature male cones of Swiss pine (Pinus cembra) A conifer cone, or in formal botanical usage a strobilus, pl.: strobili, is a seed-bearing organ on gymnosperm plants, especially in conifers and cycads.