Hello again Dr. Campbell If you are going to be in the states let me know. It would be my honor and privilege to take you to dinner. I feel I owe you so much. I use your videos as my number one resource. I have never be exposed to such an excellent Educator......you are responsible for my success......you and only you. Thank you Sincerely, Teresa Bragoli

you are the best educator I've ever had, and I am a BSN, RN, CCRN. I thank you from the bottom of my heart. your videos help to retain; not memorize. Thanks again and keep them coming.

I wish my professor in nursing school teaches like you; putting an effort to make students understand the process etc... We don't do this stuff, but I wanna understand over and over again on this topic because in my opinion, this is one of the important stuff... My previous prof. don't really do anything but do a speedy verbal lectures; then we wasted hours there not learning anything then we go home clueless then have to study tremendously. If they teach the way you do we don't need to work extremely hard with anxieties... Of course we need to study hard, but without the anxiety because we have confidence on the way they suppose to teach... You're one of my fav online professor-- I love the way you teach.

2023, this dr is now one of the few scientists that are actually studying science and share his independent result of conclusion. No industry influenced or politically bought narrative. You are a great guy and source of studied information. Thanks! Health and wisdom to all, Erik the Netherlands

If you had been my teacher at school, I would have loved learning from you. At 77 I am absolutely devouring all your lectures you are a born teacher. Many thanks Carol

Dr Campbell, thank you so much for your lectures, they are my main studying material for my nursing degree. Your videos not only are wonderfully explained, but they are so easy to understand and most importantly, they're enjoyable too! It's been so easy to have good marks on my exams thanks to these videos, and when I'm on practice it's so easy to understand how the human body works and the reasons behind it. Again, thanks a lot for your help....A very grateful student.

I have watched countless talks, lectures, taken A&P twice, never have I heard the most complex material conveyed in such a clear, easy, and concise way!! TY

Simply, a master at work! Dr John is such a great educator, communicator and storyteller. He has the unique ability of capturing your attention and keeping you riveted to his lesson. He is a national treasure!!!! I would love to meet him in person.

Dr Campbell your lectures are absolutely brilliant - my lifeline as I journey through my nursing degree - thank you sincerely for making my studies lighter & more understandable...

I absolutely love your videos. You're a blessing to all of us who were lucky enough to stumble on your videos. May the good lord guide and keep you. Be blessed 🙏🏽

Amazing lecture, precise, specific and very clear. 😀

He is so good! Wish I had him as an instructor!!!

Your passion is infectious... I am walking in the path of a giant... I just know I will get there. Thank you loads.

I would want nothing more when I watch your videos, I get enough information and understand it very well, cant thank you enough Dr. Campbell

I love you Dr. Campbell!! You literally saved my life in pharmacy school!😍😍😍😍

This guy has a good sense of humor and a good pace of teaching. When he goes,"No it doesn't have three names." You see him pause and start to be amused. Hahah, I love this guy.

Dr. Campbell I am currently a nursing student and your lectures is truly helping me a lot to complete my degree! please please please continue to teach us by making more of this lecture videos via youtube!!! this is AMAZING!!!!!!!!! I am speechless..

Thank you Dr. Campbell. You're a lifesaver. I really wish there more educators just like you. You explain the theory in such a simple way.

Thank you so much Dr John combell I really benefited a lot from your lectures. May you keep going please and our lord will bless you abundantly

Good no nonsense lectures. 'Does what it says on the tin' style teaching without the usual waffle and gimmicks. Cheers for that, learnt loads!

Just a parent at the moment homeschooling my 14 yo and yet you are such a good teacher, I understand this. Wanted to know more about the Adrenals and Endocrine system and you are making it so easy to understand. From a lay person.

Studying for my entrance test for PA school, your videos have saved me from reading hundreds of pages of material. Thank you

Thank you professor Campbell. I love your teaching styles.

These are timeless lectures. Very well spoken, clear and concise. But i cant get over the fact that John always taught class in bare feet due to a foot sweating issue.

What a good teacher teaches in one hour, parents can't teach that in 100 years. A classroom teaches more than life, but you teaches more than life and a classroom combined. You are amazing!

I like your lectures more than any others Dr.John Campbell, you are my favorite educator ever 👍

You make learning enjoyable. So pleased to find your lessons. 😊 thank you.

You're an excellent teacher/Doctor. You got a new fan.

Hello Dr. Campbell, am from Uganda but am very grateful i came across such an excellent teacher like you,there is nothing that you explain to me that i fail to understand,yo such an amazing teacher, may God bless you

Thanks to you for making reading my anatomy and physiology textbook easy to understand without any stress

Wow you are a treasure Dr. John. You make learning fun. Thank you.

I can not say enough how happy and appreciative I am for coming across your channel. I have my HESI A2 exam coming up and I was really struggling with a couple of the body systems and your channel has actually taught me how to understand it and not just memorize the material. Can't say thank you enough!

What fortunate students to have such an awesome instructor!!

Hello respected sir! I am MD student.your lectures are very helpful..i gain a lot of knowledge from your lectures respected sir! Thank you so much sir

Omg!!! I’m so grateful that I came across your channel. I think I will finally pass my A&P class. This is the first time I’m able to process the information. Thank you so much 😊

Awesome videos. Comprehensive . Only a casual reading required after watching and it's in your system.

I envy your students Dr, the best teacher ever. I should be paying you really not my university,☺ I learn and understand more with your videos than in my lectures.

Thank you so much such lectures, you are such an amazing doctor. Be blessed.

Woow! Anatomy couldn't have been any easier. You are a genius! Thanks a lot Dr. Wish I had seen you during my A&P 1. Better late than never though. God bless!

Clear, concise, crisp...and stra8 to the point..great lectures!!!

It's my first time taking an A&P class. Your video is helping soooo much. THANK YOU SO MUCH!!

Your lectures are super and easy to understand. Thanks Dr Campbell

Thank you for your lecture videos! They have gotten me through Anatomy with a subpar professor:)

Thank you so much Dr.John Campbell for explaining step by step. Starting with fundamentals. I am a budding Cranio Sacral Therapist and I always want to get my fundamentals right. I first saw your videos on Heart and it was Crystal clear. Thank for all your effort.

hello Dr. Campbell, I am not studying medicine or for an exam, but I thoroughly enjoy your lectures just to understand the body better. You are a lovely, lovely teacher. Thank you so much for uploading these priceless lectures.

Amazing lecture sir I literally had to not read anything again after listening to your lecture so so helpful I am preparing for CSCS and doing chapter 3 absolutely love the way you explained. Thank you so much

Thank you for your clear and concise explanations! I've become a subscriber!!!

Dear Dr john Campbell. Excellent way of understood very well

Excellent way of explaining. Really like it, for a non-medico also it is easily understandable

36:27 LMAO I love how you have a sense of humor while teaching!!! thank you!

love your videos! very clear and helpful. Thank you

Hi Dr Campbell I always adore your educational sessions and in fact I've learnt a lot from you especially when I need some clarifications about certain clinical experience I always turn to you and your expertise.I value your expertise and skill about every system of the human body.GOD BLESS!!!

Thank you so much for your lecture, I’ve been learning so much from your videos. 😊

You are the best. Period.!!!!!!!!!!!

The best teacher ever,I have a maximum respect Sir

You are amazing doctor

thank you for educating us about this amazing system. you made science loveable

I always learn from you and that makes me a better person almost every single day. You are great and a wonderful person to look up to. Can't thank you enough Sir.

This man is a blessing

Thank you for sharing your deep fountain of knowledge and making such clear, well presented videos for us beginners. Rather than trawling through books tirelessly, I'm devoting my time to your videos and learning so much more in an enjoyable way. Thanks again Dr Campbell.

Yes! We are fearfully and wonderfully made.

Thank you for all your teaching! It helps me understand and retain better. I wish I found your teaching when I was in England!

Thank Dr. Campbell I understood very well!!

What a great knowledge and fantastic teaching skills. Every subject is explained with so much clarity; every video is inspiring and encouraging to find out more. Thank you for sharing Dr.Campbell!

Thank you sir john campbell i am a BDS,MDS and you are an amazing teacher. Thank you so much(india)

Thanks Dr for your great effort to med students

The best professor ever

Hello i am from india, your videos are really helpful for clearing my exams ,i never understood biology so greatly till your lectures Very beautifully explained.

:) this accent is something which I shall aim for!

Thanks Dr. That was well simplified ...i have been reading my notes repeatedly but I couldn't understand anything, your lessons are helping me .Thanks again Dr. John 🇿🇲

Thank you very much Doctor. You are brilliant. Salute.

This is a good teacher 👏👌. I love ur work

Thank you sir. your videos are helpful for icse and isc also.

you are ONE of the best

Best tutor out there for sure. Thanks for the help and keep up with the great content!

Thanks for this feedback. fantastic..................

Thank you Dr Campbell for helping me pass my exams 🙏🙏

i wish you were my teacher! d/t covid our labs and even our AP lectures are "hybrid" but really even when we're in class together its only for 20 or so minutes. thank you for posting this!! very helpful!!

I'm here bz some student ask me how I can understand endocrine system, and very straight I came here, bz he was my teacher at that time , and now I'm doctor thank God, then thank u teacher . ❤

Wao it was such wonderful lecture ,thanks so much Dr

Excellent sir

You sir, are fabulous! I have read the Endocrine chapter in my book 3-4 times and still felt lost..10 minutes into your video it all clicked!!! Thank you so much!

Vet Science student from South Africa....big fan of yours

Peace be upon you. Thank you very much, you are a master

Best explanation, thanks Doc

Love you sir,you are the best lecture indeed

Delivered so nicely. Easy to follow!

Good teaching skills 👍

this might be a silly question but here it goes anyway. oxytocin is only needed by females, does this mean that men's posterior lobe doesn't produce any oxytocin? Again thanks so much for your help. You have an unique talent for teaching.

great sir .value ur lactures .they really clear concepts......

Thank you Doctor, you are Amazing.

thank you sir, you are an amazing teacher

thank you so much Doctor Long live for more videos

Hi Doc, I have got a couple of lecturer videos to go all the time, taking symptoms and management. From Ghana.

You are professional

You are a life saver, thank you

hello sir i watched you before now and your explaination how the impulse transmit through neurons was very clear when i need it i will subscribe you again

Thank you very much... This really help for my studies........

thank you for good lectures

Greetings...great video...Here's my situation...back in April I woke up in the middle of the night with my heart pounding...there was no shortness of breath, just the heart pounding...and since I have a racing mind, all that extra blood being pumped, drives me towards anxiety and then I can't sleep...I am 57 and this had never happened to me before...the first instance lasted about 4-5 days and it was pretty severe...then disappeared just as it appeared! I was fine for 3-4 days, then it came back...it has been like this since April 17th, although, as of lately, it seems like the intensity of the condition has either gone down or my body is getting used to it or has learned to cope with it...the condition just comes and goes... sometimes, when just laying down, I can feel my whole body jerk and immediately after that, I feel a rush flowing through my entire body and 2-3 seconds later, the heart starts pounding...it's almost like an adrenaline rush because my hands get a bit shaky and so do my legs...it is very annoying and I am begging to get worried that my Endocrine System is failing...what's your take?....and I know you can't offer medical advice, but I have no medical insurance and certainly cannot afford health care...I do appreciate your input. Thank you and have a blessed day.