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Harommagz chist?

Sokhti harommagz. Harommagz yake az kuhantarin tarkibi magzi sar ba hisob rafta, avvalin marotiba dar hayvonho bo paydoishi khorda (sutunmuhra) hosil meshavad. Harommagz dar kovokii sutunmuhra joygir ast. Darozii on 43-45sm buda, pahniash 12- 13mm, vaznash 30-31gr-ro tashkil mekunad. Harommagz az se qabat: 

  • qabati berunii sakht;
  • qabati tori ankabutmonand, ki dar zeri qabati gafs joygir ast va
  • qabati narm, ki asosi magzro tashkil mekunad, iborat ast.

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Dar sathi pesh va aqibi harommagz du juyaki daroz mavjudand, ki onro ba tarafi rost va chap taqsim mekunand. Dar burishi kundalangi harommagz az du modda iborat ast:

  • moddai khokistarrang majmui neyronho buda, dar qismi mobayni joygir ast;
  • moddai safed, ki dar qismi pahlugii harommagz joygir ast, izofahoi neyronhoro tashkil mekunad. 

Harommagz az paydoish to hol tarkibi segmentarii khudro tagyir nadodaast va az 31 juft segment, ki az reshachahoi pesh va aqib mebaroyand va torhoi asabhoi omekhtaro hosil mekunand, iborat ast. Dar reshachahoi aqib neyronhoi hissiyot va dar reshachahoi pesh neyronhoi harakat joygirand. 

Vazifai harommagz. Harommagz du vazifai asosi:

  • reflektori va
  • guzaronandagiro (noqiliro) ijro mekunad. 

Vazifai reflektorii harommagz harakatro tamin mekunad. Az harommagz kamonaki reflektori meguzarad, ki kashishkhurii mushakhoi badanro tamin menamoyad. Ba reflekshoi harakat refleksi zonu misol meshavad. Hangomi bo bolgachai nevrologi ba payi zeri aynaki zonu zadan rostshavii soqi poyro mushohida namudan mumkin ast. Harommagz bo yakjoyagii magzi sar kori uzvhoi dokhili: dil, meda, uzvhoi tanosuli, masona va gayraro tanzim mekunad. Vazifai guzaronandagiro moddai safedi harommagz tamin menamoyad. Impulshoi asabi, ki az retseptorho ba harommagz meravand, tavassuti rohhoi boloravanda ba magzi sar meguzarand.

refleksi-zonuBad onho az magzi sar bo rohhoi poyonravanda ba harommagz va az on jo ba uzvho meravand. Kori harommagzro nimkurahoi kaloni magzi sar tanzim mekunand. Inro dar vaqti oseb yoftan yo kandashavii harommagz mushohida kardan mumkin ast. Magzi sar mutadil kor mekunad, ammo aksar reflekshoi harommagz, ki az joi zarardida poyontar meboshand, nest meshavand. CHunin odamon qobiliyati korkuni, harakat kardani dastonro dorand, ammo qismi poyoni badani onho beharakat meshavad. 

  1. Sokhti harommagz chi guna ast?
  2. Kadom vazifahoi asosii harommagz malum ast?
  3. Harommagz az chand modda sokhta shudaast?
  4. Kori harommagzro kadom qismi magzi sar tanzim mekunad.

Kori amali

Refleksi pay dar odam Tajhizoti amaliyot: bolgachai nevrologi, kursi, tashkhisshavanda. 

Rafti amaliyot:

a) Tashkhisshavandaro ba kursi shinoned.

b) Poyi chapro boloi poyi rost guzored.

v) Bo bolgacha ba zeri aynaki zonu zaned.

g) Harakati poyro mushohida kuned.

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