🧬 Sodium’s Role in Bone Cell Activation
  • August 23, 2025

In terrain-deficient individuals, especially those with low sodium, osteoblasts may be underpowered, unable to deposit bone matrix effectively. 🧂 Salt-Inducible Kinases (SIKs) and Bone Formation Recent studies have identified salt-inducible…

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Cephalothorax aka prosoma
  • September 24, 2024

The cephalothorax, also called prosoma in some groups, is a tagma of various arthropods, comprising the head and the thorax fused together, as distinct from the abdomen behind.[1] (The terms prosoma and opisthosoma are equivalent to cephalothorax and abdomen in some groups. The terms prosoma and opisthosoma may be preferred by some researchers…

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Asynchronous Muscles
  • September 24, 2024

Asynchronous muscles are muscles in which there is no one-to-one relationship between electrical stimulation and mechanical contraction. These muscles are found in 75% of flying insects and have convergently evolved 7-10 times.[1] Unlike their synchronous counterparts…

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Thorax (arthropod anatomy)
  • September 24, 2024

The thorax is the midsection (tagma) of the hexapod body (insects and entognathans). It holds the head, legs, wings and abdomen. It is also called mesosoma or cephalothorax in other arthropods. It is formed by the prothorax, mesothorax and metathorax and comprises the scutellum; the cervix, a membrane that separates the…

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Ascus (bethesda System)
  • September 22, 2024

The Bethesda system (TBS), officially called The Bethesda System for Reporting Cervical Cytology, is a system for reporting cervical or vaginal cytologic diagnoses,[1] used for reporting Pap smear results. It was introduced in 1988[2] and revised in 1991,[3] 2001,[1][4][5] and 2014.[6] The name…

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Thecal Sac or Dural Sac
  • September 22, 2024

The thecal sac or dural sac is the membranous sheath (theca) or tube of dura mater that surrounds the spinal cord and the cauda equina. The thecal sac contains the cerebrospinal fluid which provides nutrients and buoyancy to the spinal cord.[1] From the skull the tube adheres…

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Theca folliculi
  • September 22, 2024

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…

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