Ordan, Jellica Ciara M.
Section 10
LABORATORY EXERICSE
INTEGUMENTARY SYSTEM
1ST Semester
AY 2020-21
1.
Describe the frog and its integument. Give specific descriptions on the
distinct markings and coloration.
- The frog skin is made out of epidermal and dermal layers, in each layer
overwhelmingly comprising of epithelial and fibroblastic cells, separately.
While mammalian epidermal strata layers are all around characterized
because of its thickness, frog epidermis is moderately slender and accordingly
often restricted to the stratum corneum which is the outermost layer, focal
stratum spinosum, and stratum germinativum or the basal layer. Frog
epidermis is made out of stratified squamous epithelium, in which the layer
corneum is made out of a dainty layer of keratinized cells. Cells in the
epidermis of fledglings or tadpoles are ciliated in the majority of the frog
species studied and cilia relapse paving the way to transformation. Generally,
it is characterized by a worldwide loss of ciliated skin cells at Gosner stages
25–30 except for the maintenance of cilia around the eye and nasal zones.
2.
Describe the procedure you would use to cut the frog to expose the
organs to view. You may include drawings to explain the technique.
Put the frog on a dissection plate. Lay the frog on its back, spread out
its appendages, and pin them to the plate. Distinguish whether the frog is a
male or a female one. Look at the inside of mouth and furthermore the head.
Presently find where the cloaca of the frog is available. Use forceps to lift the
skin between the rear legs and make a little cut with a surgical tool. Proceed
with the cut up the focal point of the frog's body with scissors, slice through
the skin only.
