CN213070267U - Teaching model for demonstrating cell division - Google Patents
Teaching model for demonstrating cell division Download PDFInfo
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- CN213070267U CN213070267U CN202021549951.1U CN202021549951U CN213070267U CN 213070267 U CN213070267 U CN 213070267U CN 202021549951 U CN202021549951 U CN 202021549951U CN 213070267 U CN213070267 U CN 213070267U
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Abstract
The utility model discloses a teaching mode of demonstration cell division, including base, curb plate, roof, first cell model, second cell model, first cell chromosome model, second cell chromosome model, its characterized in that: the base is horizontally arranged, two side plates are fixedly connected to two ends of the base, the two side plates are parallel to each other and perpendicular to the base, and top plates are fixedly connected to the upper ends of the two side plates; the spout has been seted up to the roof lower surface, installs the slide bar in the spout, the slide bar is perpendicular with the roof, the upper end is the T shape and installs horizontal slip in the spout of T shape, slide bar quantity is two upper surfaces of connecting respectively at first cell model and second cell model, the utility model discloses can imitate cell chromosome's division and cytokinesis become two division processes to can show and take the karyotype analysis, make the student know the cell division process directly perceivedly and master and show and take the karyotype analysis method, the utility model discloses simple structure, convenient operation, the cost of manufacture is low.
Description
Technical Field
The utility model relates to a teaching aid field specifically belongs to a teaching model of demonstration cell division.
Background
Cell division is the process by which living cells proliferate and divide their numbers from one cell into two cells. Cells before division are called mother cells, and new cells formed after division are called daughter cells. Typically comprising two steps, nuclear fission and cytoplasmic fission. During nuclear division, the mother cells transmit genetic material to the daughter cells. Cell division is the reproduction of individuals in unicellular organisms and is the basis for the growth, development and reproduction of individuals in multicellular organisms. In 1855 Welch, German scholars proposed a famous conclusion that all cells are derived from cells, that is, all cells of an individual are thought to be generated by original cell division, and there is no evidence that there are other ways for cell propagation besides cell division.
Therefore, cell division belongs to basic courses in biology, and in the general teaching process, a teacher only uses pictures to show the cell division process to students, so that the intuitiveness is poor.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model discloses a demonstration cell division's teaching model, this utility model can demonstrate cell division's process, makes the audio-visual understanding cell division process of student.
In order to achieve the technical purpose, the above technical effects are achieved, and the utility model discloses a realize through following technical scheme:
the utility model provides a teaching mode of demonstration cell division, includes base, curb plate, roof, first cell model, second cell model, first cell chromosome model, second cell chromosome model, its characterized in that:
the base is horizontally arranged, two side plates are fixedly connected to two ends of the base, the two side plates are parallel to each other and perpendicular to the base, and top plates are fixedly connected to the upper ends of the two side plates;
the cell chromosome model comprises a top plate, a T-shaped sliding chute, a first cell model, a second cell model, a first cell chromosome model and a second cell chromosome model, wherein the lower surface of the top plate is provided with the sliding chute, a sliding rod is arranged in the sliding chute, the sliding rod is vertical to the top plate, the upper end of the sliding rod is arranged in the T-shaped sliding chute in a T shape and slides left and right in the sliding chute, the number of the two sliding rods is respectively connected to the upper surfaces of the first cell model and the second cell model, the first cell model and the second cell model are of square structures with hollow interiors, one;
the outer walls of the surfaces, opposite to the openings, of the first cell model and the second cell model are fixedly connected with moving rods, the other ends of the moving rods penetrate through the side plate, through holes are formed in the side plate, the moving rods penetrate out of the through holes and can slide in the through holes, the first handles are arranged at the end parts of the moving rods, the moving rods are hollow rods, inner rods are sleeved inside the moving rods, one ends of the inner rods are located in cavities formed by the first cell model and the second cell model, one ends of the two inner rods located in the cavities are respectively connected with the first cell chromosome model and the second cell chromosome model, the first cell chromosome model and the second cell chromosome model are close to each other at the centromere, and the second handles are arranged at the other ends of the inner;
the first cell chromosome model and the second cell chromosome model are of square structures with hollow interiors and one side of the square structures is provided with an opening, the two openings are relatively folded together, the inner side faces of the first cell chromosome model and the second cell chromosome model are respectively and fixedly connected with 46 detachable chromosome models through metal wires, magnetic blocks are fixedly arranged at positions of centromeres of the chromosome models, and the corresponding chromosome models in the first cell chromosome model and the second cell chromosome model are attracted together through the magnetic blocks at the positions of the centromeres.
Further, the inner rod slides within the travel bar.
Further, the first cell model, the second cell model, the first cell chromosome model, and the second cell chromosome model use a transparent material.
Further, the dyed monomer model may be made using a ribbon-like rope material having human banding core type characteristics.
The utility model has the advantages that: the utility model discloses a can imitate the division of cell nucleus and the division process that the cell divides into two, make the student know the cell division process directly perceivedly, this utility model structure is simple, convenient operation, the cost of manufacture is low.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic pre-division representation of the teaching model demonstrating cell division.
FIG. 2 is a schematic post-division representation of the teaching model demonstrating cell division.
FIG. 3 is a schematic structural diagram of the chromosome model.
In the drawings, the names of the components represented by the respective reference numerals are listed as follows:
1-base, 2-first cell chromosome model, 3-second cell chromosome model, 4-second cell model, 5-top plate, 6-slide bar, 7-chute, 8-first cell model, 9-moving bar, 10-inner bar, 11-first handle, 12-second handle, 13-side plate, 14-metal wire, 15-cell chromosome model, and 16-magnetic block.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-3, a teaching model for demonstrating cell division includes a base, a side plate, a top plate, a first cell model, a second cell model, a first cell chromosome model, and a second cell chromosome model, wherein:
the base is horizontally arranged, two side plates are fixedly connected to two ends of the base, the two side plates are parallel to each other and perpendicular to the base, and top plates are fixedly connected to the upper ends of the two side plates;
the cell chromosome model comprises a top plate, a T-shaped sliding chute, a first cell model, a second cell model, a first cell chromosome model and a second cell chromosome model, wherein the lower surface of the top plate is provided with the sliding chute, a sliding rod is arranged in the sliding chute, the sliding rod is vertical to the top plate, the upper end of the sliding rod is arranged in the T-shaped sliding chute in a T shape and slides left and right in the sliding chute, the number of the two sliding rods is respectively connected to the upper surfaces of the first cell model and the second cell model, the first cell model and the second cell model are of square structures with hollow interiors, one;
the outer walls of the surfaces, opposite to the openings, of the first cell model and the second cell model are fixedly connected with moving rods, the other ends of the moving rods penetrate through the side plate, through holes are formed in the side plate, the moving rods penetrate out of the through holes and can slide in the through holes, the first handles are arranged at the end parts of the moving rods, the moving rods are hollow rods, inner rods are sleeved inside the moving rods, one ends of the inner rods are located in cavities formed by the first cell model and the second cell model, one ends of the two inner rods located in the cavities are respectively connected with the first cell chromosome model and the second cell chromosome model, the first cell chromosome model and the second cell chromosome model are close to each other at the centromere, and the second handles are arranged at the other ends of the inner;
the first cell chromosome model and the second cell chromosome model are of square structures with hollow interiors and one side of the square structures is provided with an opening, the two openings are relatively folded together, the inner side faces of the first cell chromosome model and the second cell chromosome model are respectively and fixedly connected with 46 detachable chromosome models through metal wires, magnetic blocks are fixedly arranged at positions of centromeres of the chromosome models, and the corresponding chromosome models in the first cell chromosome model and the second cell chromosome model are attracted together through the magnetic blocks at the positions of the centromeres.
Further, the inner rod slides within the travel bar.
Further, the first cell model, the second cell model, the first cell chromosome model, and the second cell chromosome model use a transparent material.
Further, the dyed monomer model may be made using a ribbon-like rope material having human banding core type characteristics.
The specific embodiment of the utility model is that: when the device is used, the device is placed on a desk through the base, teaching demonstration is conveniently carried out on a student, before the demonstration, the first chromosome model and the second chromosome model are leaned together to form a complete chromosome model, the first cell model and the second cell model are leaned together to form a complete cell model, during the demonstration, the second handle is pulled to enable the inner rod to slide outwards in the movable rod to drive the first cell chromosome model and the second cell chromosome model to move towards the left side and the right side, thereby simulating the process of splitting a nucleus into two nuclei, wherein the first chromosome model and the second chromosome model are separated, the chromosome model in the first chromosome model and the second chromosome model is pulled towards both sides, thereby separating and moving the chromosome models connected together by the magnetic blocks to both sides, thereby simulating the process of chromosome division.
First cell model and second cell model are transparent material, can observe the division process of first chromosome model and second chromosome model, first chromosome model and second chromosome model move to behind the both sides respectively, the pulling carriage release lever moves to both sides in the through-hole, drive first cell model and second cell model and move to controlling both sides, the cell nucleus is along with removing, thereby simulate a cell division into two cells, it moves in the spout to drive the slide bar simultaneously, the slide bar can bear the weight of first cell model and second cell model, the utility model discloses can simulate the division of cell nucleus and the division process that the cell division becomes two, make the student know the cell division process directly perceivedly, the utility model discloses simple structure, convenient operation, the cost of manufacture is low.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching.
Claims (4)
1. The utility model provides a teaching mode of demonstration cell division, includes base, curb plate, roof, first cell model, second cell model, first cell chromosome model, second cell chromosome model, its characterized in that:
the base is horizontally arranged, two side plates are fixedly connected to two ends of the base, the two side plates are parallel to each other and perpendicular to the base, and top plates are fixedly connected to the upper ends of the two side plates;
the cell chromosome model comprises a top plate, a T-shaped sliding chute, a first cell model, a second cell model, a first cell chromosome model and a second cell chromosome model, wherein the lower surface of the top plate is provided with the sliding chute, a sliding rod is arranged in the sliding chute, the sliding rod is vertical to the top plate, the upper end of the sliding rod is arranged in the T-shaped sliding chute in a T shape and slides left and right in the sliding chute, the number of the two sliding rods is respectively connected to the upper surfaces of the first cell model and the second cell model, the first cell model and the second cell model are of square structures with hollow interiors, one;
the outer walls of the surfaces, opposite to the openings, of the first cell model and the second cell model are fixedly connected with moving rods, the other ends of the moving rods penetrate through the side plate, through holes are formed in the side plate, the moving rods penetrate out of the through holes and can slide in the through holes, the first handles are arranged at the end parts of the moving rods, the moving rods are hollow rods, inner rods are sleeved inside the moving rods, one ends of the inner rods are located in cavities formed by the first cell model and the second cell model, one ends of the two inner rods located in the cavities are respectively connected with the first cell chromosome model and the second cell chromosome model, the first cell chromosome model and the second cell chromosome model are close to each other at the centromere, and the second handles are arranged at the other ends of the inner;
the first cell chromosome model and the second cell chromosome model are of square structures with hollow interiors and one side of the square structures is provided with an opening, the two openings are relatively folded together, the inner side faces of the first cell chromosome model and the second cell chromosome model are respectively and fixedly connected with 46 detachable chromosome models through metal wires, magnetic blocks are fixedly arranged at positions of centromeres of the chromosome models, and the corresponding chromosome models in the first cell chromosome model and the second cell chromosome model are attracted together through the magnetic blocks at the positions of the centromeres.
2. An instructional model demonstrating cell division according to claim 1, wherein: the inner rod slides in the moving rod.
3. An instructional model demonstrating cell division according to claim 1, wherein: the first cell model, the second cell model, the first cell chromosome model, and the second cell chromosome model use a transparent material.
4. An instructional model demonstrating cell division according to claim 1, wherein: the dyed monomer model can be made using a ribbon-like rope material having human banding core-type characteristics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021549951.1U CN213070267U (en) | 2020-07-30 | 2020-07-30 | Teaching model for demonstrating cell division |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021549951.1U CN213070267U (en) | 2020-07-30 | 2020-07-30 | Teaching model for demonstrating cell division |
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| Publication Number | Publication Date |
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| CN213070267U true CN213070267U (en) | 2021-04-27 |
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| CN202021549951.1U Active CN213070267U (en) | 2020-07-30 | 2020-07-30 | Teaching model for demonstrating cell division |
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