Amphioxus Slides : V.L.S. Anterior Region Amphioxus Slides : V.L.S. Anterior Region Comments The vertical longitudinal section shows buccal cirri, wheel organ, velum and some pharyngeal region. In a carmine stained section, prominent dorsal structures are fin rays, notochord and nerve cord. Dorsal fin is low, continuous and supported by…
Herdmania Slides : Metamorphosis : Tadpole Larva Larva of Herdmania is called as tadpole larva. After hatching it leads a free-swimming life for 90-180 seconds and then undergoes retrogressive metamorphosis. Comments : Tadpole larva Larva is minute, transparent and 1.2 mm long. Body divisible into head or trunk and a…
Lamprey : Ammocoete Larva Whole Mount Ammocoete larva of Lamprey Comments : It is one of the stages in the development of lamprey. Egg develops into ammocoete larva, which is a tiny transparent creature in the beginning and later on becomes opaque and 170 mm long. It lies buried in…
Transverse sections are prepared from specimens that have been preserved and hardened in formalin. With the help of a Butcher's knife or sharp razor, cut the hardened specimen through eye region, olfactory region, branchial region, stomach and liver region, intestinal region, pelvic fin region and caudal region. Study various hand…
Amphibian Slides Frog V.S. of Skin Comments Amphibian Slides Frog Under low magnification : (15 X eye-piece; 4 X objective). Vertical section passing through the skin reveals two layers, outer epidermis and inner dermis, distinctly seen under high magnification. Epidermis is thin and made up of startified squamous epithelium. Multilayered…
Reptile Slides (Lizard ) V.S. of Skin Comments T.S. skin of lizard shows outer epidermis and inner dermis. Epidermis contains horny epidermal scales characteristic of reptilian skin. Various layers of epidermis are stratum corneum followed by stratum germinatum or stratum malpighii from which new skin develops. Below stratum germinatum in…
Bird Slides (Pigeon) V.S. of Skin Comments: V.s. skin of pigeon shows main two layers: Epidermis, Dermis. Epidermis contains the following layers : Outermost layer is called as epitrichium made up delicate cells Below epitrichium is cornified layer called as stratum corneum. Beneath stratum corneum is stratum germinatum or stratum…
Mammal Slides Rabbit : V.S. of Skin Mammalian skin is characterized by having various glands and hairs in abundance. T.S. through skin shows that it is an organ consisting of an ectodermal epithelium, the epidermis, and its supporting mesodermal connective tissue, the dermis. Epidermis constitutes the investing cellular membrane of…