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Sense And Hormone Presentation By:Alex
Transcript of Sense And Hormone Presentation By:Alex
Sense And Hormone Presentation By:Alex
The one part of the eye I will go into is the retina, it is a complicated tissue; its job is to detect light. Inside the tissue, there are two types of cells; rods and cones.
: are delicate to the dark, they help us to see things in the dark.
: as you can imagine, help to see light, as well colour. The special cones, see three colours, which then depict millions of colours.
Rods And Cones
Top 10 Facts:
What The Pineal Gland does:
The Pineal Body Hormone
The Pineal Gland is located far in your brain, in an area called the epithalamus; where the two halves of the brain connect. It sits in a groove just above the Thalamus, which that area co-ordinates multiple functions that are related to the senses.
Where It Is Located
The major hormone created is Melatonin.
What the Pineal Gland Produces
The most common thing that can be found is, a cyst, or tumor; found on MRI scans. There are tremendously rare instances of early puberty in persons with Pineal cysts. It is unsure if the early puberty is caused by Melatonin, or some other hormone. Other than that, there are no other diseases associated with over or under activity of the Pineal Gland.
What Can Go Wrong With The Pineal Gland
Top 5 Fun Facts
Humans observe the world through eyes, whether that be distance, colour, heat, shapes, movement, heat, and depth. The body part we use for sight is our eyes, however; the eyes wouldn't work without our brain. Our eyes have specific parts to them, to save time, I will not be going into detail. "see diagram below" For our eyes to work, we need light to fall onto an object, then reflected into our eyes. The eyes process it in a complicated way, that lead to our brain, which then interprets the object; as to what it is.
Eye Related Problems
This is when far objects are blurred, but near objects are clearly seen. This is because the image is focused in front of the retina, rather than on it. This is typically the fault of the eye ball being too long, or the refractive power, (light bending) of the lens being too strong. This can be corrected with glasses/contacts; with concave lenses to focus on the image.
Age-Related macular degeneration: (ARMD)
The average blink lasts about 1/10 of a second.
Newborns can't cry tears, they will make crying sounds, but tears don't come in until the age of 4-13 months old.
You blink about 12 times in a
Around the world, there are about 39 million people who are blind. Approx. 6 times more with some form of vision deficiency.
Out of all the muscles in your body, your eyes are the ones to work the most.
80% of vision problems
globally are avoidable or curable.
Your eyes are about 1-inch across and weigh 0.25 roughly ounces.
Doctors thus far haven't been able to find a way to reconstruct an eyeball, for the reason that the optic nerves in the back of the eyeball is extremely sensitive.
In both of your eyes, there is a blind spot, this is where the optic nerve attaches. We don't notice, because both of our eyes make up for it.
There are some people with a condition, where both of their eyes are different colours; this is called Heterochromia. Along with central, or Sectoral.
When objects are blurred up close, in comparison to Myopia. Rather then the image being focused in front of the retina, it is focused behind the retina; rather then upon it. This happens, when the eye is too short, or the refractive power(light bending) of the lenses is too weak. Glasses/contacts, help to correct or assist this with a convex lenses.
In normal vision, the cornea is smooth, and equally curved in all directions. With Astigmatism, the cornea is "warped", meaning one side is curved more in one direction. Causing the distortion or blurriness of objects, at any distance. It can usually be corrected,
using a unique spherical cylindrical lens.
This is when the lens in your eye clouds. This makes it so you can't form a clear, sharp image. The way a cataract forms is when the capsule between the lens is filled with deceased old cells, which get trapped; with time clouding.
This is when the central retina degenerates with age. It is caused by the hardening of arteries, which nourishes the eye. Denying the retinal tissue of nutrients and oxygen it needs in order to work and causes deterioration in the central vision.
In your eye, it produces a clear liquid, (aqueous humor) it fills the eye between the cornea and iris. The fluid drains out of a complex drainage system, the balance between the production and drainage of fluid determines the eyes intraocular pressure. (IOP) Glaucoma is a disease, created by increased IOP, typically resulting from a malfunction in the drainage system. Increased IOP may cause irreparable damage to the optic nerve and retinal fibers. Untreated it has the possibility to result in permanent vision loss.
1. The Pineal Gland has high levels of calcium, it can be found with x-rays.
2. The name "Pineal Gland" comes from the root word "pinea", which is Latin for pine cone; this is because it looks like a pine cone. (definitely smaller than a pine cone though)
3. Another name for the Pineal Gland,is the "third eye" because if the gland is cut in half it looks like an eye. It even has rod and cone structure as the normal eye, is light sensitive and has similar pigments.
4. The Pineal Gland produces its own hallucinogenic drug. The main psychedelic compound found in South American Shamanic plant medicine called, Ayahuasca.
5. The Pineal Gland may be the location of an extremely rare tumor, named the pinealoma.
The importance of Melatonin in human biology is not clear as of yet, however it may assist to synchronize circadian rhythms.(the body clock) in different parts of the body. Melatonin has often been named as the "sleep hormone", it isn't essential to for sleep, but we do sleep better during the time that Melatonin is secreted. Some have thought that Melatonin is associated puberty, playing a minor role in the reproductive development. (extremely uncertain) When given as a pill, Melatonin can help to reset your circadian rhythms (jet lag) Higher doses of Melatonin can not only reset the circadian rhythms, but bring on sleepiness, and lower core body temperatures.
The Pineal Gland is best known for its secretion of Melatonin. The Melatonin is released into the blood stream and possibly into the brain fluid. The body's daily (circadian) clock (internal) controls the making of Pineal Melatonin, so Melatonin is frequently used in human research for understanding the body's biological clock. There's a rhythm to the biology of the Pineal Gland; it varies with changes in day length. This would be why the Pineal Gland is referred as the endocrine clock or endocrine calendar. (endocrine: A system of glands, which help regulate, hormones, sleep, mood, growth and development, and etc.)