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theca    
n. 囊,膜,鞘

囊,膜,鞘

theca
n 1: a case or sheath especially a pollen sac or moss capsule
[synonym: {theca}, {sac}]
2: outer sheath of the pupa of certain insects


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  • Theca - Wikipedia
    In biology, the theca of follicle can also refer to the site of androgen production in females The theca of the spinal cord is called the thecal sac, and intrathecal injections are made there or in the subarachnoid space of the skull In human embryogenesis, the theca cells form a corpus luteum after a Graafian follicle has expelled its secondary oocyte arrested in second meiosis Thecal
  • Thailand Electronics Circuit Asia 2026
    ABOUT THECA THECA (Thailand Electronics Circuit Asia) focuses on the global PCB and electronics circuit industry, covering the full value chain from materials and equipment to PCB manufacturing and advanced applications The exhibition serves as a regional hub connecting industry leaders and providing access to fast-growing markets across ASEAN and the wider Asia-Pacific region
  • Theca: We build AI solutions that find and explain your important . . .
    Theca helps you find what matters, understand it faster, and enable you to make better decisions
  • THECA : Thailand Electronics Circuit Asia | Bangkok - Facebook
    What is THECA? #THECA is a platform that connects the entire electronics value chain, from PCB and PCBA to advanced electronics, covering upstream, midstream, and downstream It highlights Thailand’s growing role as a manufacturing and electronics integration base that the world is actively looking for What is Power2Motion?
  • THECA Definition Meaning - Merriam-Webster
    The meaning of THECA is an enveloping sheath or case of an animal or animal part
  • Portland, Indiana . . . VMBC Show Swap Meet . . . *NEW DATE . . . June 1 . . .
    Bicycle Heaven Swap is May 29-30-31 Portland starts June 1-4 Hoping this doesn't affect attendance of the bicycle vendors that usually attend
  • Portland, Indiana . . . VMBC Show Swap Meet . . . *NEW DATE . . . June 1 . . .
    The VMBC takes over the Jay County Fairgrounds on Saturday, May 30, 2026 Event starts on Monday, June 1 through Thursday, June 4, 2026 Get All the Details
  • Theca Cells vs Granulosa Cells: Roles in Hormone Production
    Theca cells form the outer layers of the developing ovarian follicle, recruited from the surrounding ovarian stroma as the follicle grows This outer sheath is divided into two sub-layers: the theca externa, which provides structural support, and the theca interna, which is directly involved in hormone synthesis
  • Dithecous Anther - Structure, Formation, and Theca
    Theca formation in a dithecous anther occurs when the flower's reproductive components grow The anther starts to form when specific cells emerge in the early stages of flower development





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