One-step-method brain-damaging and spinal cord-damaging method

Abstract

The invention discloses a one-step-method brain-damaging and spinal cord-damaging method, being simple and quick in operation and being easy to learn by a beginner. The one-step-method brain-damaging and spinal cord-damaging method comprises 1) a frog (toad) is taken, and an operator grasps the frog in the left hand and makes the frog to lie low on the back and keeps the head of the frog facing the operator; 2) the operator uses the right hand to pull open the under jaw of the frog, and uses the left hand to strut the oral cavity of the frog, wherein the operation for opening the oral cavity of the frog does no harm to the operator as the frog has no teeth; 3) the operator uses the right hand to probe a metal probe (spinal cord-damaging needle) into the upper jaw of the oral cavity of the frog, and inserts the metal probe slantly with some force when the metal probe is located in the middle part before two eyeballs, and then the metal probe enters the cranial cavity after perforating the sphenethmoid at the central part of bottom of the skull of the frog; 4) the operator holds the probe in balance, and swings the probe up, down, left and right to damage the brain tissue; and 5) the operator inserts the probe from front to back, and the probe penetrates through a foramen magnum and then enter a canalis vertebralis naturally to damage the spinal cord until the lower limbs of the frog is straightened and the arms and legs become loose, soft and symmetrical and the frog does not breath anymore.

Description

technical field [0001] The invention relates to an experiment teaching method, in particular to a one-step method for destroying brains and spinal cords, which is simple and fast in operation, easy to learn and master for beginners. Background technique [0002] At present, in the process of experimental teaching, the cerebrospinal puncture through the body surface is used to damage the brain and spinal cord of frogs (toads). Spinal tap. The specific method is as follows: First, take a frog (toad) and rinse it with tap water. Hold the frog with your left hand, press the snout with your index finger and the back with your thumb, bending its head forward as much as possible. Hold the probe in your right hand and insert it vertically from the place equivalent to the foramen magnum (use the probe to start from the middle of the eyes and slide down the direction of the spine. , and then penetrate the cranial cavity forward through the greater occipital bone, and stir left and ...

AI Technical Summary

Problems solved by technology

[0003] However, there are many disadvantages in the traditional method: 1) The needle insertion site is not easy for beginners to grasp

This operation is the most difficult for beginners. Because most students cannot enter the spinal canal, the probe may stray into the chest and abdominal cavity, or puncture the skin, and accidentally injure the operator's hand; 4) During the experimental teaching process, if a toad is used, Because the secretion of the toad's post-auricular glands may spray into the operator's eyes and cause harm to the operator; 5) During the experimental teaching process, if the selected frog (toad) is particularly large or small, the needle insertion point should be selected and damaged. Both the brain and spinal cord are particularly difficult; 6) During the experimental teaching process, the success rate of beginners is not high, resulting in incomplete destruction of the brain and spinal cord, which affects subsequent experiments