Anatomy, Physiology and Neuroscience

what makes the human face different from one another 1. is it skull anatomy 2. is it muscle insertion 3. is it eyes nose mouth types / or collectively all these account for this?

There are these two fibers that I keep reading about but essentially they look the same to me but with the corona radiata being in a lower area of the brain. Could somebody explain the differences between these white matter fibers and why the different names?? Thanks,

Hello everyone, I wanted to see if I could get some good advice/opinions (hopefully from some experts) on the future of stem cell use for healing bulged and herniated discs. I am 25 and I have 3 bulged discs, my first 8 years ago. Last year for the first time since my injury, I was referred to a physiatrist. He works for UW Medicine in Seattle WA where I live. I have had this injury for a long time, so i have done lots of research. I asked him many questions. I am highly interested in the Regenexx procedure as a route to possibly rid me of this condition. For those who don't know, Regenexx is a procedure that uses your bodies own harvested and cultured stem c…

The graph represents the plasma level of ACTH and Cortisol, over a 12-month duration, post-corticotropin therapy. What do you think the graph tells us us about the adrenocortical sensitivity and responsiveness to corticotropin. I came across this question, and I was unsure about the context of "responsiveness" and "sensitivity" as it relates to hormones and physiology in general. I'm hoping someone out there has experience with using these two terms, in regards to this scenario. This question is not about the mechanisms of negative feedback. It is solely to explain the difference between response and sensitivity using the graph. What does this graph tell yo…

What scenarios are possible, if one consumes a drug that blocks the closing of the voltage-gated Sodium gates? a) Would the action potential fire as usual, but the amplitude of the action potential be higher? b) Would the action potential be between the value of Ek and Ena? Also, if the voltage gates are never closed, there will be no depolarization phase right? Would that still count as an action potential if the membrane never repolarize? -OR- Would the increase in membrane potential, keep activating more and more potassium channels as well, and keep the value between Ek and Ena?

My anatomy teacher said "The liver does not reach under the left hemidiaphragm". All of the images / 3D models I have seen have suggested this is wrong. My question is, am I right in thinking he is wrong or is he correct? If he is correct what seperates the left lobe of the lung from the left hemidiaphragm? Thanks

Earlier an over simplistic assumption was that equal development of both the hemispheres of the brain was directly related to the ability to use both hands equally well. This seems specious at best because if that was true then no specific talent could be registered in ambidextrous individuals. What is the current insight into this subject? Thanks in advance.

hi guys it is a question that is in my mind for a long time as you know when we do exercise in a gym our a bodybulding area , we damage the muscles and activate the satellite cells to repair and regenerate them and them muscle will be stronger and bigger(hypertrophy) but as you know for example a muscle diameter could not be for eample 100cm and the hypertophy will end in a point i want to know what does happen in this point?what is the physiology that mucles could not no longer hypertrophy? does a material prevent sattelite cells to activate?pls tell me the exact physiologicall process that prevent this

Is the heart as efficient in patients with dextrocardia? What are the bio-physical implications of having a heart that has it's apex tilted towards the left?

Why does central venous pressure in the heart determine end diastolic pressure? More importantly for me, why does end diastolic pressure determine end diasotlic volume (rather than volume determinine pressure)? Thanks

I'm most likely going to be getting a associates degree in applied science to be a medical office administrator. Anatomy always seems to challenge me the most. Any tips on learning the basics to advanced. Links would be great and feedback as well.

Hi, Would just like to know what radio frequencies are used in neurons for receiving and transmitting? I know that the axon hillock is used that's why there's sort-of an antenna and capacitor in the brain. But i know that's just a part of it as audio and visual components could be sent in and out. Thanks

Hi, I have searched the internet in an attempt to better understand what is going on with the left side of my neck and back. During 2011, I had 2 surgical procedures performed on my cervical spine in an attempt to relieve pain caused by entrapped nerves at c5/6 and c4/5. The first procedure involved discectomy at the above points, cages inserted, braced and fused. I was almost pain free for a while, then the pain returned. I had another ct scan done and although the radiologist and my gp could see no neural problems, I took the scan to the neurosurgeon whom performed the above procedure. Straight away he could see that the cage at c5/6 had collapsed slightly on the left…

Hi I have a question. Would a human being be able to move his body voluntarily without help from artificial nerve stimulation and most importantly without any signals from the afferent nerves reaching the brain or spinal cord(the nerves that supply sensory input)?

i am really curios and am trying to remove all the limiters on human body like limited stamina and muscle strength . but for most it is just some child dream , to be frank i take it very seriously. i want u r opinions that if u were given the task to overcome certain limiters then what would u do and how. the concept of cross species genetics is a high level science but there are some very interesting results in htis stream . this could be the ans to my question but not enough

It is true that heavy metals have a 15 year half life in neurological cells? And do they block receptors from receiving transmitter loads? And can you purge the metals?? Regards.

i just want to know the best way and how it would be effective means what will be its effect and how much time it will take?

Just came across this awesome anatomy series by anatomist Dr. Gunther von Hagens and pathologist Prof. John Lee, available via Channel 4 On Demand and on YouTube: http://www.channel4.com/programmes/anatomy-for-beginners/ http://www.youtube.com/show/anatomyforbeginners Lesson 1. Movement Lesson 2. Circulation Lesson 3. Digestion Lesson 4. Reproduction Note: do not watch if squeamish or if you have moral concerns regarding human dissection. Hopefully nobody else has previously posted links to the same videos; I tried searching for 'Hagens' and 'Anatomy for Beginners' within the Forum site and this gave negatives but then I was temporarily prevented f…

when a person cant sleep at all for weeks, it is more than a nightmare, it is life-threatening... . it is so scary and creepy you still cant fall asleep after taking sleeping pills. i never take sleeping pills when i have insomnia, so i dont think i will have medicine tolerance. This time, it is a big challenge so that i have to take a sleeping pill called Alprazolam. told by my doctor, Alprazolam has less side effects and is suitable for patients who never take any other sleeping pills before. i try not to take Alporazolam before bedtime untill i still cant sleep at all at 2am. it is so odd that i feel my sleepy feeling totally goes away after only one tablet of…

Am sorry, but unable to resist. Please delete if improper. ----> http://answers.yahoo.com/question/index?qid=20100317231952AAtrZSE

Trying to get some thoughts how a sleeping brain might sense a numb limb. Most of the muscles are paralyzed but maybe the attempt to move still registers somehow. Hopefully people more knowledgeable can offer their insight.

Sorry for being random and dumb, I don't know if this is the best place for this but if anyone could point me in the right direction that would be cool. I have had some weird feelings of pressure and whatnot in my head correlated with memory loss and anxiety stemming from some medication complications I took around four or five years ago. I don't have a gen physician per se any more, and don't want to go through the hassle of getting one, then getting a recommendation for a specialist and then getting an mri, then going back, (partly I'm worried about having something like this on my medical record for some reason, partly $$$)-- so I'm thinking about just going t…

I believe that our thoughts impact our emotions but ultimately it is the subconscious being our newly evolved senses like emotions that truly cause our complex thoughts. Our emotions are registrations of our environment and our subconscious mind projects emotions for us to sense the world around us and make relative sense of it. So what do you think? What are thoughts and how do you explain the psychologically? Something I wrote in reply to a facebook thread that made me want to start this thread - Some of this maybe wrong as my education in psychology is rather shallow. Our thoughts are secrets of the brain, in a way. For instance, the more positive your though…

What is the difference in brain structure of somone intelligent compared to that of an average person?

Why doesn't the brain overheat within the confines of the skull? Alt. how does the brain cool itself down effectively, despite being surrounded mostly by thick bone? My guesses are that the brain doesn't produce that much heat, and maybe something to do with the layer of fluid between the brain and skull.