Subject matter: Spinal cord its structure and function.
Objective: to determine the location of the spinal cord in the human body, external and internal structure, function, damage to the spinal cord.
- Educational – assimilation and systematization of knowledge on the topic of the lesson, continue to develop the ability to work with the text of the textbook, compare, explain, draw conclusions;
- Developing – to develop attention, creative thinking, independence, memory, imagination, speech;
- Educational – the formation of maximum performance in the classroom;
- Valeological – according to the material the age characteristics of schoolchildren, the use of rational teaching methods. Change of activities. Carrying out valeological pause, health savings.
The content of educational material: the external and internal structure of the spinal cord, location, function, regulation, damage.
Terms and concepts: rear roots, front roots, reflex, conductor functions, knee jerk.
Means of learning: the textbook "Biology. Man – 8 cells ”NO Sonin, MR Sapin, drawings, presentation, multi-level tests, additional literature.
Training methods: independent work, partially search method, conversation;
Forms of education: individual, collective.
Forms of knowledge control: work on individual tests with multi-level tasks.
- Knowledge check (testing by option)
- Study a new topic:
- Brain location
- External and internal structure of the brain
- Spinal cord function
- Getting a knee jerk
- Knowledge consolidation (testing)
Course of the lesson – presentation:
Slide -1. Hello! I am very glad to see you. Sit comfortably, watch your posture, relieve yourself of tension and tune in to study a new topic, knowledge of which you will need in your life. I hope you will be actively working on the lesson.
The purpose of the lesson: to study the location, external and internal structure of the spinal cord, function, damage.
Studying this topic, you will learn a lot of new things about the structure of your body, which will allow you to care more about your health.
Slide 3. Let’s check the previously obtained knowledge on the options, proceed to the execution (music sounds for 5 minutes). Be careful when doing the job. When you have completed the assignments, hand in the notebooks.
Slide 4 (teacher talks)
The spinal cord is located in the spine. It has the appearance of a long white cord with a diameter of about 1 cm, an almost cylindrical form of length 45 cm long and weighing 34-38 g. It begins at the level of the large occipital foramen of the skull and ends at level 2 of the lumbar vertebra.
Each person must, above all, monitor their own health. SL-5
How to determine whether you have the correct posture? What should be posture when walking? What will lead to a wrong fit at the desk? What portfolio should a student carry to school? Why? (with the wrong sitting at the desk, the spine is bent, the natural bends are disturbed …)
The work itself. Task: (on slide 6)
- on page 56, read paragraph 2;
- See pic on page 57;
- compare rice on page 57 with rice on page 59. find parts of the spinal cord.
Go to the board to show parts of the spinal cord. (slide 7, slide
Conclusion: students make their own conclusions (slide-9)
Slide 10 Teacher. From the spinal cord symmetrical pairs depart the spinal nerves, there are 31 pairs. Each nerve starts from the spinal cord in the form of 2 cords, or roots, which, when combined, form a nerve. Slide 11. Spinal nerves and their branches are sent to the muscles, bones, joints, skin, internal organs.
The spinal cord under the guidance of the brain regulates the work, provides the innervation of the skin and skeletal muscles. Slide 12.
And now let’s rest. Gymnastics for the eyes is offered to students. (Slide-13)
What are the functions of the spinal cord: (slide-14)
- Reflex. How do you understand? (students respond);
- Conductive? How can you explain?
We will conduct a little experience “Knee reflex” (2 students go to the blackboard)
Assignment: write down the path of transmission of the excitement of the knee jerk.
When can the connection between the spinal cord and the brain be interrupted? What can this lead to? (slide- 16).
What did you learn in class today? Students conclude.