Learn physiology with Dr. Hasanat

🔬 Mitochondria: The Powerhouse of a cell⚡🧬

প্রতিটি জীবন্ত কোষের ভেতরে ক্ষুদ্র এক শক্তিকেন্দ্র — Mitochondria।
এখানেই তৈরি হয় আমাদের শরীরের প্রধান শক্তির মুদ্রা, ATP।

🧠 Brain function
❤️ Cardiac contraction
💪 Muscle activity
সবকিছুর পেছনেই আছে mitochondrial energy production।

📌 Interesting Physiology Facts:

👍Mitochondria has its own DNA 🧬
👍Maximum ATP is produced through.
oxidative phosphorylation.

Cells with high energy demand, like cardiac muscle cells, contain abundant mitochondria ❤️

⚠️ When mitochondria fail:
Fatigue, muscle weakness, neurodegenerative disorders, and metabolic diseases may develop.

❤️ Other Important Functions
🔹 Regulation of Apoptosis

🔹 Calcium Storage

🧬 Unique Features of Mitochondria
✅ Has its own circular DNA
✅ Self-replicating organelle
✅ Inherited mainly from the mother
✅ Contains bacterial-type ribosomes

This supports the Endosymbiotic Theory.

🏥 Clinical Importance
⚠️ Mitochondrial dysfunction is associated with:

Muscle weakness

Neurodegenerative diseases

Diabetes mellitus

Aging

Ischemic injury

📌 Tissues with high energy demand contain abundant mitochondria:

Cardiac muscle ❤️

Skeletal muscle 💪

Liver

Kidney tubules

Neurons 🧠

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April month performance of my YouTube channel - Dr Hasanat's lecture!
Thankful to all😊

For 2nd year MBBS students :
Identify the ECG leads.
Calculate heart rate and put your comment.
Progression of R wave - Normal/abnormal?

Basic differences between negative and positive feedback mechanisms👍

২য় বর্ষের ছাত্র ছাত্রী রা, নিচের প্রশ্ন গুলোর উত্তর পারেন কি না দেখেন। পারলে বুঝবো আপনি বেশ ভালো লেখাপড়া করছেন। না পারলে অবশ্যই জেনে নিবেন।
এরকম আরো প্রশ্ন জানতে আমার পেজের সাথেই থাকুন 😊

Viva Q:
Q. When does ADH produce antidiuretic action?

Q. Which receptor mediates the antidiuretic action of ADH?

Q. When does ADH cause vasoconstriction?

Q Which receptor is responsible for vasoconstrictor action of ADH?

Physiology is not just a subject… it is the story of life inside the human body.
Every heartbeat ❤️
Every breath 🌿
Every nerve impulse ⚡
has a beautiful physiological explanation.
✨ “Don’t just study Physiology… feel it.”
Learn Physiology with Dr. Hasanat 💙
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🧠 Welcome to Learn Physiology with Dr. Hasanat!

Here, we’ll learn the functions of the human body in a simple, clear, and exam-focused way 📚✨

💡 Remember:
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From membrane potential to cardiac cycle, from endocrinology to neurophysiology, let’s learn step by step and build strong concepts together 🔬🫀🧠

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Expecting answer from 2nd year MBBS students -

Gut prepares pancreas before glucose rises!
Explain.

Practical physiology written by Professor Dr. Md. Mohidur Rahman sir.