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Antero-posterior radiographic view, showing missing ribs, absent lumbosacral vertebrae, hypoplastic pelvis and "frog-like" position of the lower extremities. The condition arises from some factor or set of factors present during approximately the 3rd week to 7th week of fetal development.
Ectrodactyly, split hand, or cleft hand [1] (from Ancient Greek ἔκτρωμα (ektroma) 'miscarriage' and δάκτυλος (daktylos) 'finger') [2] involves the deficiency or absence of one or more central digits of the hand or foot and is also known as split hand/split foot malformation (SHFM). [3]
The name comes from the Sanskrit मन्दुक manduka, "a frog", from the frog-like position of the legs in the asana.. The pose is one of the 32 "useful asanas" listed in the classic 17th century Hatha yoga text Gheranda Samhita; the variant pose Uttana Mandukasana is also in that list.
This makes the species even more unique, as PLOS One said, because other frogs that skip the egg step typically give birth to froglets, or baby frogs, but these frogs still give birth to tadpoles.
Two main positions for examination can be used, depending on the patient's preference and the specific examination being performed, including the frog-leg position (with the head of the examination table raised or lowered), the lithotomy position with stirrups, or either of these with a parent holding the child. A hand mirror can be provided to ...
Bhekasana (Sanskrit: भेकासन; IAST: Bhekāsana), [1] or Frog posture [2] is a reclining asana in modern yoga as exercise. It is one of several poses that put the body in a shape like that of a frog: another is Mandukasana .
The egg cell is generally asymmetric, having an animal pole (future ectoderm).It is covered with protective envelopes, with different layers. The first envelope – the one in contact with the membrane of the egg – is made of glycoproteins and is known as the vitelline membrane (zona pellucida in mammals).
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