Tag: ANDROGEN
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Theca folliculi
The theca folliculi comprise a layer of the ovarian follicles. They appear as the follicles become secondary follicles. The theca are divided into two layers, the theca interna and the theca externa.[1] Theca cells are a group of endocrine cells in the ovary made up of connective tissue surrounding the follicle. They have many diverse functions, including promoting folliculogenesis and recruitment of a single…
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Theca
In biology, a theca (pl.: thecae) is a sheath or a covering. Botany The typical anther is bilocular, i.e. it consists of two thecae. Each theca contains two microsporangia, also known as pollen sacs. The microsporangia produce the microspores, which for seed plants are known as pollen grains. If the pollen sacs are not adjacent, or if they open separately, then no thecae are…
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Buggy Love Potion: The Science of Insect Sex Hormones
Listen up, you sexy six-legged sirens and alluring arthropods! šš Get ready to have your mind blown and your exoskeleton rocked. Insect sex hormones: They’re real, they’re spectacular, and they’re changing the game of love in the miniature world! From ecdysone’s double life to gonadotropins’ matchmaking skills, these hormones are the unsung heroes of insect…
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Prenatal exposure to paracetamol/acetaminophen and precursor aniline impairs masculinisation of male brain and behaviour
Paracetamol/acetaminophen (N-Acetyl-p-Aminophenol; APAP) is the preferred analgesic for pain relief and fever during pregnancy. It has therefore caused concern that several studies have reported that prenatal exposure to APAP results in developmental alterations in both the reproductive tract and the brain. Genitals and nervous system of male mammals are actively masculinised during foetal development and…
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The lactating birds and the bees (gastrin, pepsin, etc)
Crop milkĀ is a secretion from the lining of theĀ cropĀ of parent birds that isĀ regurgitatedĀ to young birds. It is found among allĀ pigeons and dovesĀ where it is referred to asĀ pigeon milk. An analog to crop milk is also secreted from the esophagus ofĀ flamingosĀ and the maleĀ emperor penguin. Description Crop milk bears little physical resemblance toĀ mammalianĀ milk. Crop milk is a…
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In Judaism, TheĀ Guf or Treasury of Souls is sometimes described as aĀ columbarium
In post-biblical Judaism, souls are envisioned as bird-like (BahirĀ 119), a concept that may be derived from the Biblical notion that dead spirits “chirp” (Isa. 29:4). TheĀ Guf, or Treasury of Souls, is sometimes described as aĀ columbarium, a dovecote. This connects it to a related legend: the “Palace of the Bird’s Nest”, the dwelling place of the…
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TheĀ violet glandĀ
TheĀ violet glandĀ orĀ supracaudal glandĀ is aĀ glandĀ located on the upper surface of theĀ tailĀ of certainĀ mammals, includingĀ European badgersĀ andĀ canidsĀ such as foxes, wolves,Ā and the domestic dog,[verification needed]Ā as well as the domestic cat.Ā Like many otherĀ mammalianĀ secretionĀ glands, the violet gland consists of modifiedĀ sweat glandsĀ andĀ sebaceous glands. It is used for intra-species signalling, scent marking, and contributes to the strong odor of foxes in particular. Although it secretes a mixture…
