Histology

Histology is the study of the Micrscopic anatomy of cells and tissues of plants and animals. You may not know it, but humans count as animals...unfortunately. The visualization of cells is achieved through usage of a light microscope, or an electron microscope. Along with the key usage of thin strips of the samples your going to look at. Histology is extremely big when it comes to Biology and Medicine. There are many classifications of cells. And they are listed below:
Epithelial-Lining of bowels , skin and glands. Along with a some organs.
Endothelium-Lining of blood and lymphatic vessels.
Mesothelium-Lining of pleural and pericardial spaces.
Mesenchyme-Cells filling space between the organs(fat, muscle, bone, etc.)
Blood cells-Red and white blood cells including those found in lymph nodes and spleen.
Neurons- conducting cells of the nervous system.
Germ cells-Reproductive cells.
Placenta- characteristic of true mammals during pregnancy.
Stem cells-Cells that develop new cells.

http://www.histology-world.com/

There is a link that takes you to a "fun and entertaining" website on histology. Although it is very entertaining to play the games, there are many other more...educational things to do on the website.

I took a microscope exam and did a lab about histology, of which I got a smiley face with a top hat...so I got an Abraham Lincoln on it. Which, I think is better than a George Washington, but maybe that's just me. It's the top hat, definitely. In the histology lab, we had to look at different samples and draw them. We looks at bone, epithelial tissue, and a funky connective tissue. We then had to draw the tissues and other cellular items that we looked at. Although the drawings that I do not have, would be a good representation of my horrible drawing ability, that was the lab.

Divisional planes

In a view of your body, there are some "primary" ways of dividing your body. One of which is sagittal, or just dividing the body into left and right parts. So you would cut straight down between the eyes, making two parallel half-people. Then there is frontal, or coronal, which divides the body into Anterior and posterior parts. Meaning this time, your would cut in half from the side, cutting both ears in half...painful. Then there is transverse, which divides your body in half Horizontally, dividing the body into upper and lower sections. There is one that is not mentioned here, and that is the
Oblique section, which divides the body diagonally thoughout the body. There you have it, the division of the body.

http://www.youtube.com/watch?v=J5COfnxIMB8&list=FL8mwj6QXDUtoT6iTJD00EVg&index=1
in this resident evil clip, the laser slices the first guy horizontally through his neck. In other words, that would be a transverse cut, although it is at the neck. The second one that was cut to bits, was cut obliquely to the utmost extreme. most oblique cuts are normally one diagonally cut and not so much as a ton of squares. But, the representation still applies, and lets face it, nobody wants to be cut into little bite sized squares.

Bodily terms

In the body, there are certain terms being used to describe certain parts. I know sounds odd right? Well, let's say that you want to describe what the front of your body looks like, you would use the word like anterior, whereas the back of your body is your posterior. It's really easy to remember because your posterior is behind you, and your anterior is in front of you. This doesn't mean necessarily your complete from of your body, you could say something like your nose is anterior to your eyes, and your eyes are posterior to your nose. Superior is you upper body, and Inferior is your lower body. The same goes for superior and inferior, although we might switch is up, and say something like, your hair is superior to your eyes, unless you have really long hair, then of which something like your hair is superior to you toes. You get the point. Medial, describes a structure towards the body's midline. Lateral is almost the same, only it describes the parts further from the median plane. Intermediate describes a structure in between the medial, and lateral plane. For example, your nose is medial to your ears, your ears are then lateral to your nose. Whereas your cheeks are intermediate of them both. Next, we come to proximal and distal. Both are describing the distance around the "trunk" (torso). Proximal means that something is closer to the torso, and distal means farther. So, we could all agree then that your foot is distal to your knee, and your knee is proximal to your foot. Superficial and deep, pretty obvious when it says deep. Deep, being deeper into your body, or simply away from your skin. And superficial is the opposite of that, being closest to your skin, or just outside of your body. So your heart is deep compared to your ribs, which would than be superficial compared to your heart.

Positive and negative feedback-homeostasis

Homeostasis, by definition is: a relatively stable state of equilibrium or a tendency toward such a state between the different but interdependent elements or groups of elements of an organism, population, or group. So when you do strenuous activities, such as running or sports, then you upset homeostasis, and you body does what it can to "adapt" to the situation. For instance, if you are running, you will overheat unless your body opens some sweat glands in order to cool your skin, and the inside of you body off. This is known as a negative feedback, because you are trying to reverse the process of your body heating. An example positive feedback is really anything that enhances your body, and as bad as it sounds, cancer is a positive feedback because of the growth hormones that it "injects" into your body. I know it sounds absolutely dreadful, but it is true. No, cancer still isn't technically a good thing...

We did a lab about homeostasis, only ours was more along the lines of who can return to homeostasis faster, after being "superheated" and "supercooled." We did only use our hand, but i think that it worked relatively the same.  As you can see from this graph, it really does depend upon who you are. As you can see, Seth and Tim were both slower that Cassidy and Jenna on returning to homeostasis from hot water. Although for cold water Seth was extremely faster in returning to homeostasis that everyone else. Whereas Tim was extremely slow compared to others. The average out of these for people to return to normal in hot water was about 5 minutes. For cold water it was about 20 minutes. which tells us that it is easier to cool down than to warm up. Interesting expirement if i do say so myself.