Frog lab report

First, all four limbs were pinned to the dissecting pan with heavy pins.

Frog Dissection

Next, stimulus was applied to create the illusion of a heart blockage. When the blockage was complete, there were no ventricular contractions of any kind and instead big pauses between atrial contractions. The testes produce sperm, or male sex cells, which move through sperm ducts, tubes that carry sperm into the cloaca, from which the sperm move outside the body.

As members of the class Amphibia, frogs may live some of their adult lives on land, but they must return to water to reproduce. Determine which students do not wish to touch the frog.

If students will be working on individual computers, they will have to distribute their pictures to all group members. The results of Just the metoprolol observed and recorded.

Frog Lab Report

Eggs are laid and fertilized in water. Voluntary muscles, which are those over which the frog has control, occur in pairs of flexors and extensors. When a response to the stimulus was seen, two beats were allowed to go by before stimulating the heart again. We will write a custom essay sample on Frog Lab Report or any similar topic specifically for you Do Not Waste HIRE WRITER To cause the ventricles to contract early, an electrical tumulus or one of many other problems that could potentially affect the heart, in this case it is electrical shock must be applied during atrial relaxation to cause the ventricles to contract before the atria.

In this lab, you will dissect a frog in order to observe the external and internal structures of frog anatomy. In the pharynx, there are several openings: Observing the heart beat via the ECG on the computer, the atrial and ventricle contractions were observed and noted as to where in the recording they were.

Modern Biology, Holt Background: The circulatory system consists of the heart, blood vessels, and blood. Ensure that each group has a photographer. The equipment and frog were positioned so that the string was taut when the ventricles relaxed.

The digestive system consists of the organs of the digestive tract, or food tube, and the digestive glands. The atria are supposed to contract first, but in this case the ventricles contract first which is wrong and the heart has to then correct itself by pausing and waiting for the atria to contract again 1.

The respiratory system consists of the nostrils and the larynx, which opens into two lungs, hollow sacs with thin walls. During this pause, the ventricles swelled much more than normal and then finally contracted.

The heart was kept moist with ringers throughout the entire experiment. Blood is carried to the heart in vessels called veins.Keep in mind that 6 students have already been assessed using this rubric.

Changing it will affect their evaluations. A digital lab report of the frog dissection Samples (include teacher notes, assessment information, student work if available) Logistics (organization, grouping, management issues, access to technology).

V-Frog Lab Report Module 4: Internal Anatomy 1. The membrane that separates the frog’s abdominal muscles from its internal organs is the coelomic membrane. (peritoneum).

Frog Dissection Lab Report Background Knowledge In the virtual dissection, it demonstrated to us how to properly pin down the frog, cut the top layer and bottom layer of skin into flaps pin those down, take out the organs and showed us the different organs that the frog had.

Lab 4 Biomechanics of Frog Skeletal Muscle I.

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Purpose This exercise is designed to demonstrate some mechanical and physiological properties of skeletal muscle using the gastrocnemius muscle of a frog. Good Luck do assingnment Frog Dissection Lab Report.

Frog lab report
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