This is known as a long vowel sound, because it says the ânameâ of the letter. The same goes for the other vowels. A short vowel sound is a vowel sound that does not follow this rule. When reading a word that uses a short vowel sound, will say the sound that the letter can make that is not its actual name. So in the case of âA,â the word âmainâ might have a long âAâ sound because we pronounce the âAâ as /Ä/, whereas the word âmanâ has a short vowel sound.
Gill arches supporting the gills in a pike. Branchial arches, or gill arches, are a series of bony loops present in fish, which support the gills. As gills are the primitive condition of vertebrates, all vertebrate embryos develop pharyngeal arches, though the eventual fate of these arches varies between taxa.
Primary and secondary. It is important that we understand the design and normal structure of fish gills, so lets quickly review the anatomical features of this specialised organ. âBranchiaâ in Greek means gills and in bony fish (teleosts) = the gills lie in a branchial cavity covered by the bony operculum (gill cover).chematic of the teleost fish gill. Secondary lamellae Retrieved from the World Wide Web (October 2012) http://www.biology-resources.com/drawing-fish-gill-filaments.html This is a close up diagram of the gill lamellae; you can see the long primary lamellae here and the secondary lamellae branching off.