dây sống

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The Vietnamese word "dây sống" refers to a biological term that translates to "notochord" in English. It is a structure found in the embryos of all chordates, which are a large group of animals that includes vertebrates (like mammals, birds, reptiles, amphibians, and fish) as well as some invertebrate species.

Explanation:

• Basic Meaning: "Dây sống" describes the flexible, rod-like structure made of cells that provides support and shape to the developing embryo. It plays a crucial role in the development of the spinal cord and other structures in the organism.

Usage Instructions:

• You will often encounter "dây sống" in biology or zoology contexts, especially when discussing the development of animals.

Example:

• In a sentence, you might say: "Trong giai đoạn đầu của sự phát triển, tất cả các động vật có dây sống đều có một dây sống." (In the early stages of development, all chordate animals have a notochord.)

Advanced Usage:

• In advanced discussions, you might see "dây sống" used in comparative anatomy, where scientists compare the developmental stages of different chordates to understand evolutionary relationships.

Word Variants:

• The term "dây sống" can be combined with other words to form phrases such as "dây sống cổ" (cervical notochord) or "dây sống phôi" (embryonic notochord).

Different Meanings:

• While "dây sống" primarily refers to the notochord, it can also be used more broadly in a biological context to discuss structures that provide support in different organisms, but this is less common.

Synonyms:

• A synonym for "dây sống" in a more general sense might be "cột sống" (spinal column), though this specifically refers to the vertebral column in adult vertebrates rather than the embryonic notochord.

Academic

1. (sinh vật) Notochord
2. Chordata