Saturday, February 28, 2009
Saturday Studying/Immersion :)
Day 29, Friday, February 27, 2009
Thursday, February 26, 2009
Day 28 - time to STOP studying ...
Wednesday, February 25, 2009
Day 27 - ...
Tuesday, February 24, 2009
Day 26 - Surviving ...
Monday, February 23, 2009
Day 25 - Multifidus
Sunday, February 22, 2009
Sunday Studying
Saturday, February 21, 2009
Saturday Studying :)
Friday, February 20, 2009
Day 24 - WOW!
Thursday, February 19, 2009
Day 23 - What Happened ...
Day 22 - Wednesday, February 18, 2009
Wednesday, February 18, 2009
Day 21 - Tuesday, February 17, 2009
Monday, February 16, 2009
Sunday Studying :)
I cut out of the gym a little early to go spend some quality time with my cadaver at school. I'm always fascinated and gain new appreciations everytime I reflect back the skin and start digging around.
Hallucis is derived from Latin and means "great toe" or more commonly what we refer to as the big toe. That toe gets a lot of attention in terms of muscle. If we pull aside the gastrocnemius (calf muscle) we can see the real meat of the lower leg which is the soleus muscle and pulling that muscle aside we get to see a rather long meaty muscle that runs up about 2/3 of the lower leg known as the flexor hallucis longus muscle and the sole purpose of the muscle is to flex the big toe and give us a strong push off when we walk. There is also another flexor muscle for the big toe located in the foot called the flexor hallucis brevis muscle and then there are two antagonistic muscles found on the anterior portion of the leg - basically the same names as the ones in back but with the words "extensor" in front of them - extensor hallucis longus and extensor hallucis brevis.
We have the plantar or bottom of the foot exposed and I was able to pull on the extensor hallucis muscle and feel the tendon moving in the foot to flex the big toe.
I learned there's different types of embalming depending on what is to become of cadavers. When they are used for dissecting it's a formaldehyde based substance which keeps them in decent condition for an extended length of time but when cadavers are used for practice surgery they are embalmed with an ethyl glycol substance (basically antifreeze) which makes them very pliable.
Our first practical is only two Friday's away so I guess I'll have to start uncovering all 40 bodies in our lab to get familiar with the differences so I'm able to name any muscle, ligament, nerve, artery or vein in any of them.
It's all utterly fascinating and I think going back to school to do this is probably the best decision I've ever made in my life.
Fresh out of high school, about 25 years ago, I started out taking some courses for pre-med but was really pretty clueless and then I think back to when I was about 6 years old and remembered I wanted to be one of three things - either and astronaut, magician or doctor. So, I guess I'm getting back on track.
I once read in an article that around the time people are in their 30s or 40s that there is a tendency for them to end up going back to something they thought about doing back in grade school. So, maybe there's something to that.
btw - I learned about kinesiology tape tonight - has anyone else ever heard of it? I was told one of the USA Olympic womens volley ball players had that kind of tape on her shoulder. I was talking to one of the student doctors about inversion of the foot and straining ligaments. He mentioned the tape that's put around, say a football players ankles to help reinforce that area but the kinesiology tape is used to help make weak muscles more easily prone to contracting. It's supposed to help make weak muscles work.
Sometimes, when you twist your angle, and it's most usually an inversion of the foot, that it's due to weak lateral muscles in the leg.
Sunday, February 15, 2009
Saturday Studying :)
Here's something kind of weird and really off the wall - one of the teachers in my spinal analysis class suggested I start sleeping with my spine! LOL
I've only done it once so far but it worked out pretty well. I stuck my model spine inside a pillow case so the pillow acted as the thorax and the pillow case was like the skin. I sleep on my side and have a couple pillows support my arm (i guess they take the place of a real person but then my hand rest right on the spine. There is no vertebrae protuberance on C1 so, I just start feeling the spine and counting out vertebrae, all the way down to L5 then count back up.
C6 is pretty easy to find on a real person. If you place three fingers along a person's spine up by the neck and then tilt your patient's head forward and back, C6 (the 6th cervical vertebrae) noticeable slides forward so then you know where both C6 and C7 are located and T1 is right underneath C7.
I always think breakfast, lunch and dinner when it comes to the top 3 regions of the spine to remember how many vertebrae are in each section, 7, 12 and 5 correspond to breakfast, lunch and dinner and that's how many vertebrae are in each section.
The cervical vertebrae have holes in the parts of their bony processes that stick out to the side and arteries run through those holes.
There have been some ongoing studies by a couple of MD's on chiropractic adjustments made to the first two vertebrae with regards to decreased blood pressure. Adjustments made on the Atlas and Axis (those are the names of the first two cervical vertebrae) have been shown to have an effect on blood pressure equivalent to two blood pressure drugs. The initial study was done with about 75 people and exams 8 weeks later showed an average drop in systolic bp of 17 points if I recall correctly. The positive findings have warranted a much larger study and is currently in progress.
I'll probably take tomorrow off from lifting and hit legs again on Monday.
One interesting thing from Histology was that ATP is actually cause for a muscle to relax after contraction. We just had a general overview in that class. Also, in biochem, what I've always heard as the Creb's Citric Acid cycle is referred to as the TSA cycle - that's going to be an interesting cycle to get down, along with the metabolic functions of the liver. glycolosis or something like that (I was reading ahead a bit) :)
another interesting thing is that all those transverse processes and other bony protrusions that stick out of all our vertebrae are actually used as levels and we have muscles attached to all those levers and its how we are able to move, twist and rotate our upper body. The intervatebral disc between each of our vertebrae have a nucleus inside of them (nucleus pulposus or np) the outer membrane of our disc are thicker in the front than in the back. In the mornings it's best to lean back slightly to stretch which helps center the np by pushing it forward.
We are most vulnerable to "slipped disc" in the morning time and the most dangerous motion we can perform is bending forward and twisting to the side, especially in the morning. This made me think of a few times I had twinges of pain and sure enough, it would be in the shower which is early in the morning and in would lean forward and twist to the left to grab a bottle of shampoo. I'm right handed so I would be reaching across my body to get the shampoo which further enunciated the twisting motion and along with bending forward would seem to throw my back out with lots of little pain receptors firing to let me know I had done something wrong - of course, I never really knew what was going on until my Spinal Anatomy class.
anyway, leaning back in the mornings and making sure to bend the legs when picking something up is a good idea.
Those intervetebral disc (IVD's) kind of get reinflated with water via osmosis everytime we sleep or lay down. compressive axial forces need to be removed in order for the disc to rehydrate with water and it takes about 5 hours of a horizontal position to allow those disc to fill back up with water. throughout the night the volume of fluid held by those disc increases about 240%
oh well, I guess I'll get back to studying. I think I'll put a t-shirt over my pillow encased spine tonight to increase the thickness between my fingers and the spine to help improve my sense of touch.
Friday, February 13, 2009
Day 20 - Friday Feb 13, 2009
Sometimes people fall asleep in class but I was falling asleep during our break between classes on Friday. Since I had nowhere to sleep I figured the 2nd best thing I could do was to fit in whatever workout I could and try to bring myself back to life.
Once, I spent time doing landscaping work where I'd build retaining walls and paver driveways and patios which was the most physically exhausting job I'd ever done but I'm not sure if that ever wiped me out as much as school did this week. I once read a person's brain consumes 60-80 gm of carbs during sleep and I'm now wondering about the energy consumption of intense study and forced cerebral activity. I never knew working out the brain could be so taxing.
Fortunately, we've got a three day weekend and just woke up from 12 hours of recuperative sleep! :)
The machinery and engineering of the human body has been absolutely fascinating to me. The design is pure genius and the foot has been absolutely fascinating to study. There are 18 muscles in the bottom of the foot. Usually tendons connect muscle to bone but there are some exceptions in the foot where a tendon will connect muscle to the tendon of another muscle. The quadratus muscle found near the base of the foot attaches to the flexor digitorum longus (fdl) muscle which, as the name suggest, flexes the digits of the foot or the lateral four toes but the tendon of the fdl muscle enters the base of the foot along the side of the foot at about a 45 degree angle and that quadratus muscle can act to straighten out the pulling action of the fdl so the toes are not being pulled at an angle. The fdl tendon also acts as the origin for four lumbrical muscles in the foot.
I better get to studying, we've got four text next week then something obscene like 6 or 8 test the following week. It's Saturday today so I should be able to get another workout in today.
Day 19 - Thursday, February 12th
Wednesday, February 11, 2009
Day 18 - Amazing Machine!
Tuesday, February 10, 2009
Days 16 & 17 - Aces Baby! :)
Sunday, February 8, 2009
Why Eat Breakfast? How about Metabolic Acidosis for a Reason!
I'm not sure what the correct pH level is for a swimming pool but, for blood in the human body, we like to have it between 7.35-7.45 on a scale from 0 to 14.
The body has a superb built in buffering system to help maintain that narrow pH level in our blood which is necessary to sustain life. The body can also use its capacities of respiration and renal functions to further bolster its ability to maintain pH levels.
One process that occurs in the body during times of starvation or fasting is known as Primary Alkali Deficit and if left unchecked this phase becomes Metabolic Acidosis. When the body is trending towards a state of Acidosis it has two ways of responding. One way is by hyperventilating which will restore the pH levels but doesn't restore the body's buffer capacity. To restore this capacity the body will excrete ammonium ions which restores buffer capacity.
We fast while we are sleeping which is why we call that first meal, Break-fast
consider the pH scale as it relates to our lives
under 6.8 death
6.8-7.24 Acidosis
7.35-7.45 Normal (ideal)
7.46-7.8 Alkalosis
above 7.8 death
Now, obviously we don't die from not eating breakfast because people do it all the time but a Primary Alkali Deficit does trend the bodies pH levels lower and, if left unchecked, would result in Acidosis and the longer we go without eating the lower our pH can get.
Here's the question – why would we want to be moving towards a pH which results in death when it's so easy to correct the situation with a simple breakfast. But, considering further, how do you think the quality and well being of a person's life in Acidosis compares to a person whose pH is in the Normal range. Skipping breakfast puts an unnecessary stress on the body that takes it's toll in the long run. Matter has limitations and our body is a bunch of matter that can only take so much.
(this is a test blog from a word document – I'll need to clean up the entry but want to see what happens when I try to post) J
Friday, February 6, 2009
Day 15 - Productive Baby! :)
Thursday, February 5, 2009
Day 14 - Biochemistry is Amazing! :)
Wednesday, February 4, 2009
Day 13
Tuesday, February 3, 2009
Day 12 - Patient/Cadaver Dissection
Monday, February 2, 2009
Day 11 - Feeling the Pressure
Anterior Thigh (9 Muscles)
- sartorius
- rectus femoris
- vastus lateralis
- vastus medialis
- vastus intermedius
- articularis genus
- pectineus
- iliopsoas
- iliacus
Medial Thigh (5 Muscles)
- adductor longus
- adductor brevis
- adductor magnus
- gracilis
- obturator externus
Posterior Thigh (4 muscles)
- biceps femoris, long head
- biceps femoris, short head
- semitendinosus
- semimembranosus
Anterior Leg (4 Muscles)
- tibialis anterior
- extensor hallucis longus
- extensor digitorum lungus
- peroneus tertius
Lateral Leg (2 Muscles)
- peroneus longus
- peroneus brevis
Superficial Posterior Leg (3 muscles)
- gastrocnemius
- soleus
- plantaris
Deep Posterior Leg (4 muscles)
- popliteus
- flexor hallucis longus
- flexor digitorum longus
- tibialis posterior
Dorsum of Foot ( 2 Muscles )
- extensor digitorum brevis
- extensor hallucis brevis
Gluteal Region (9 muscles)
- gluteus maximus
- gluteus medius
- gluteus minimus
- piriformis
- obturator internus
- superior gemellus
- inferior gemellus
- quadratus femoris
- tensor facia latae
- sartorious
- rectus femoris
- vastus lateralis
- vastus medialis
- vastus intermedius
- articularis genus
- pectineus
- iliopsoas
- iliacus
- adductor longus
- adductor brevis
- adductor magnus
- gracilis
- obturator externus
- tibialis anterior
- extensor hallucis longus
- extensor digitorum lungus
- peroneus terius
- peroneus longus
- peroneus brevis
- extensor digitorum brevis
- extensor hallucis brevis
- gluteus maximus
- gluteus medius
- gluteus minimus
- piriformis
- obturator internus
- superior gemellus
- inferior gemellus
- quadratus femoris
- tensor fascia latae
- biceps femoris, long head
- biceps femoris, short head
- semitendinosus
- semimembranosus
- gastrocnemius
- soleus
- plantaris
- popliteus
- flexor hallucis longus
- flexor digitorum longus
- tibialis posterior