Rana pipiens I. Purpose: To examine the frog externally and internally by dissection. II. Materials: 1. Frog 2. Dissection pan 3. Manual 4. Dissection utensils III. Methods: A. External: The dissectors set up for their lab by getting the following materials: the frog‚ dissection utensils‚ dissection manual‚ and the dissection pan. Dissectors placed the frog anteriorly with the dorsal side up. Dissectors noticed
Premium Heart Digestion Small intestine
Joselyn Bodnar Heart lab dissection 3/2/15 The Human heart has many complicated processes. Dissecting a sheep’s heart can help to provide an active‚ firsthand learning experience that allows to illustrate what has been previously heard and read. The sheep heart and a human heart share the same function and purpose‚ which is to keep the body alive by continually circulating blood around the body. Like a human heart‚ a sheep’s heart contains two atria and two ventricles. These four chambers
Premium Heart Blood
As seen in the cow eye dissections‚ the eye is one of the most complex organ in an organism. This small organ has multiple structures and tissues that work together to provide the organism with vision. The journey of the image formation begins at the Cornea‚ the outermost layer of the eye. Usually‚ this structure is transparent like water‚ but in this experiment‚ due to the chemicals used to preserve the eye ‚ the cornea appeared opaque. Its transparency is what allows light to easily pass through
Premium Eye Retina Brain
Rat Dissection Prelab 1. Is your left like your right side? It should be similar to your right but there can be differences like if damage was done to one side or if one side was mutated and disfigured. 2. Name an animal that doesn’t have a left and right side. Snakes don’t have a left and right side but there is an interesting study about that which is that Adult snakes (16 of 20 snakes) preferred to coil in the clockwise direction. Many female snakes (15 of 20 snakes)‚ but few male
Premium Marketing Water English-language films
Earthworms are part of Phylum Annelida‚ Class Oligochaeta. They are classified in this phylum because their bodies are segmented and separated by an internal wall called septa. Each segment may or may not be different from the other depending on its function. Earthworms also classify with this phylum because it has a true coelom lined with a mesoderm and contain complex organ systems (Miller and Levine 694). Earthworms survive by feeding‚ circulating‚ respirating‚ excreting‚ reacting‚ moving‚ and
Premium Annelid Reproduction
In a study conducted by Ratner and Miller (1959) the topic was to demonstrate classical conditioning with earthworms. The subjects of the experiment were 32 earthworms. In this experiment the unconditioned stimulus was the bright light‚ the conditioned stimulus was the vibration‚ the unconditioned response and the conditioned response was the responsiveness. The earthworms were broken down into four groups by random selection. Presented with the light for 2 seconds‚ which overlapped with the conditioned
Premium Psychology DNA Statistics
B. Internal: The dissectors: o used hands to turn frog ventral side up‚ head anterior‚ hind limbs posterior o used forceps to lift fold of skin directly anterior to hind limbs o used scissors to make small superficial cut o inserted scissors into cut and continued superficially anterior medial through mandible o used scissors to make 2 lateral superficial cuts just anterior to hind limbs on either side of medial cut and stopped before reaching dorsal surface o
Premium Heart Abdomen
Background: As members of the class Amphibia‚ frogs may live some of their adult lives on land‚ but they must return to water to reproduce. Eggs are laid and fertilized in water. On the outside of the frog’s head are two external nares‚ or nostrils; two tympani‚ or eardrums; and two eyes‚ each of which has three lids. The third lid‚ called the nictitating membrane‚ is transparent. Inside the mouth are two internal nares‚ or openings into the nostrils; two vomerine teeth in the middle of the roof
Premium Heart Blood Frog
Article Summary Effects of earthworms on soil Earthworm is the common name for the largest members of Oligochaeta in the phylum Annelida. They combine bilateral symmetry and corresponding external and internal segmentation. This phylum consists of more than 17‚000 modern species of worms including earthworms‚ ragworms‚ and leeches. They are found in marine environments from tidal zones to hydrothermal vents‚ in fresh water‚ and in most terrestrial environments. They generally do not occur
Premium Soil Annelid Humus
Renaissance‚ scientists and doctors were only exposed to inaccurate anatomical knowledge from centuries ago due to the lack of human dissections. Galen was one of these anatomists from awhile ago‚ more specifically Rome in the first century. His beliefs were worshipped for 14 centuries‚ up until the Renaissance. Before the Renaissance‚ the church didn’t allow human dissections‚ which affected doctor’s abilities to learn about the human body. Animal bodies were their only source of anatomical knowledge
Premium Dissection Anatomy Human anatomy