21/11/2025
د/ زياد القفاش بيفكرك
♣️ MOVEMENT & BODY BALANCE NEED SUPPORT ☠️
🚶Types of movement "CPT" 🚶ايوه زي اللي عندكم بالظبط 😂🥰
🌀Continous need ATP as CYTOPLASMIC STREAMING
🍃Positional as PERISTALSIS & INSECTIVOURS PLANT LEAVES
SEARCHING FOR " FOOD🍔,, MATING 👩🏻❤️👨🏻,, AVOID DANGER🧟,, SPREAD IN NATURE 🤱"
♣️MOVEMENT IN PLANT :
🎄Touch لما امسك ورقه واحده علي فرع ف شجره الفرع كله يقفل، الفرع اللي جمبه ميقفلش.
معني كدا SITE OF RESPONSE AND TOUCH ARE DIFFERENT لمست "ورقه" فرع كامل قفل. 🌿
🎄TOUCH and SLEEPING >> WATER MOVES BY OSMOSIS ⬇️
مفيش اي علاقه بال AUXINS ✨
🎄TROPISM " LIGHT ,, GRAVITY ,, HUMIDITY " ⬇️
Unequal distribution of auxins
🎄Cytoplasimc streaming 🌀🌀
Continous ✓ Need ATP ✓ IN PHOLEM ✓ "XYLEM ❌❌❌ DEAD CELL" .
CHLOROPLASTS movement is determined by the movement of CYTOPLASM 🌀
🎄Haptotropism
🌱Pea plant "Tendril" always need SUPPORT ,, it respond to TOUCH only not to light.
⚕️Side IN CONTANT has ↙️↙️AUXINS . SLOW in growth due to friction force and resistance between support & side in content with it.
🧅 Corms & bulbs have pulling roots " pulled⬇️ till suitable level of soil" + "subterranean stem remain at suitable distance from soil surface" +"Support the aerial parts against wind" .
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🏋️ MOVEMENT IN MAN :
💪🏻MUSCLE consist of MUSCLE BUNDLE consist of MUSCLE FIBER consist of 1000:2000 MYOFIBERL .
💪🏻 MUSCLE FIBER contain SARCOPLASM "cytoplasm of muscle".
💪🏻MUSCLE FIBER membrane is SARCOLEMMA .
💪🏻 MUSCLE FIBER is Multinucleated .
💪🏻 MUSCLE BUNDLE membrane is PERIMYSIUM.
💪🏻 MYOFIBRIL consist of :
⚡Light "I" band ⬇️⬇️⬇️ during contraction. *ACTIN MOVABLE*
⚡Dark "A" band 👉🏻REMAIN CONSTANT👈🏻. *MYOSIN FIXED*
⚡ Semi-light "H-ZONE" 🙈DISAPPER 🙈
⚡DARK LINE "Z-LINE" 🫂BECOME CLOSER🫂
⚡SACROMERE = MUSCLE PIECE= Z-Z-ZONE ⬇️IN LENGTH.
*H ZONE MYSOIN ONLY ,, LIGHT BAND ACTIN ONLY ,, DARK BAND MYOSIN + ACTIN " .
🏋️TYPES OF MUSCLES : "SKSC".
🤸SKELETAL "striated ACTIN+MYOSIN" + VOLUNTARY.
🩸SMOOTH "NON-Striated ACTIN ONLY" +INvoluntary
🫀 CARDIAC "Striated ACTIN +MYOSIN" + INvoluntary.
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🏋️Muscle CONTRACTION :
*دلوقتي الجدار الخارجي +ve واللي جوا -Ve ف حاله الراحه . POLARIZATION
* مين جاي؟؟ =Nerve impulse
*مين شافه ؟؟ =CALCIUM
* راح فين الكالسيوم؟؟ دخل جوا ال VESICLE ثم اتقطعت.
*مين طلع ؟؟ Acetylcholine .
*عمل ايه ؟؟ bind with receptor of muscle.
اول ما يحصل الbinding دا هوبا الاشارات اتعكست حصل DEPOLARIZATION.
*يبقي كدا اللي برا -ve واللي جوا +ve .
خلاص خلصنا؟!
*مين دا ؟ =CHOLINESTERASE ENZYME
*كسر مين ؟ =acetylcholine
*حوله ل ايه؟ =choline + acetic acid
ويحصل REPOLARIZATION
برا +Ve ... جوا -ve ..
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🧨CA+ ION >> FORMATION OF TRANSVERSE LINKS .
🧨ATP >>> Allow transverse links to act as HOOKs.
🧨Muscle ACTIVE ↖️↖️↖️↖️ HIGH MITOCHONDRIA ,, LOW GLYCOGEN .
🧨 ليه بقول علي ca pumb voltage gate ??
عشان هي بتكون مسئوله عن التغير اللي بيحصل بين ال ions مين يدخل مين يطلع ف اللحظه اللي بتتغير فيها الجدار .
🔥 Motor End plate دا اتصال العصب بالعضلات
🔥 Neuromuscular junction المكان اللي بيوصل مابين العصب والعضلات عشان يحصل كل اللي اتكلمنا عليه فوق .
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🧘Muscle fatigue :
دي عباره عن protective mechanism . طب ازاي؟؟
تخيل فضلت تشتغل زي الاله ايه اللي هيحصل؟ ببساطه هتموت؟
معني كدا ان حد يحصله FATIGUE دي حاجه كويسه ؟ اه طبعا لإنها بتخليك غصب عنك ترتاح ف ترجع تشتغل م الاول.
ممكن يحصل بسبب impulse عماله تتبعت كتير كتير وتتكرر . او ان العضله عماله تنقبض بسرعه بالتالي مش قادره تاخد كفايتها من الاكسچين .
Anaerobic respiration = 2 ATP
طيب ولو متعالجش ؟ هيحصل MUSCLE SPASM ولو متعالجش برضو ؟ العضله هتتقطع ويحصل نزيف.
ساعه الراحه ايه اللي بيحصل؟
Muscle is supplied by enough amount of Oxygen. ✓
Perform AEROBIC RESPIRATION = 38. ATP. ✓
SEPARATION OF TRANSVERSE LINKS FROM ACTIN ✓
🌟QUESTION TIME 🌟
👉🏻 If Cutin is deposited on the epidermis of the root system, the cell will...
⭕Lose structural support.
⭕Gain physiological support.
⭕Not absorb water & lose the physiological support.
⭕Absorb water & gain physiological & structural support.
Good Luck 🥰♥️
😇
💪😅❤️
#سنتر #ترابيزه ✅✨
✅♥️
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