Optic nerve

sensitive lining on the inside of the eye. Retinoblastoma most commonly affects young children, but can occur in adults. Retinoblastoma may occur in one or both eyes. The retina is made up of nerve tissue that senses light as it comes through the front of the eye. The retina sends signals through the optic nerve to your brain, where these signals are interpreted as images. 2.) Cause: Source: Bishop, Jerry E. Genome: The Story of the Most Astonishing Scientific Adventure of Our Time. 2014…

Different autopsy methods are useful in different situations. I have previously mentioned Rokitansky method which involves examining the organs in situ “a condition sometimes mandated by a restrictive autopsy consent or severe time limitations” (Finkbeiner 35). But there are other methods that involve removal of the organs including Letulle, Ghon and Virchow. Both the Letulle and Virchow start the same way: a Y incision is made and the skin is reflected from the chest and abdomen. If the…

The U. S. Army developed the Golden Hour Blood Container that maintains cooling requirements of four units of blood for up to three days. The U. S. Army’s advancements in the area pain management include: an advanced regional anesthesia that blocks nerves to an affected area pending surgical intervention, and non-sedative pain relieving lozenge. Innovations in robotic prosthetics were driven up by the number of service members whom experienced amputations. The U. S. Army Medical Research and…

clock not coinciding with the real time of their new environment, thereby interfering with proper wake and sleep cycles. A person’s internal time piece is extremely miniscule, the “size of a grain of rice” and resides near the merging point of the optic nerves. Light taken in through the eyes signals the release of diverse hormones, which in turn coordinates numerous physical functions including a person’s sleep/wake cycle. Researchers have found that when an individual’s physical daily tempos…

Biology Has More to Say about Sexuality than People Do The most fundamental question of psychology is whether or not behaviors and characteristics are a result of our genetics or the conditions our body is put in after birth. This nature versus nurture debate is far from being settled and forms the foundation of most behavioral studies. A common behavior studied is homosexuality, defined as, “love, desire, and/or sexual acts between people of the same sex” (Roof). The term homosexuality is…

was identified. In the studies of Jean-Martin Charcot, he named the disease that would eventually become known as “Multiple Sclerosis”. Multiple Sclerosis, or MS, is an autoimmune disease that makes your body attack the covering of the axons of the nerves, known as the myelin sheath, in the brain and along the spinal cord. This can cause a disruption in the communication between the brain and the rest of the body. ("Multiple Sclerosis Information Page.") This can lead to generalized pain, visual…

tumor are the same as a brain tumor but can be worse because there is no physical tumor. They told me the types of treatment for this specific tumor using medication and surgery which was a huge relief. Since there was so much swelling around the optic nerve and so much pressure behind it, I was having the world’s worst…

Physiology of intracranial pressure (ICP) 1. Intracranial pressure dynamics: Intracranial pressure is the pressure of cerbrospinal fluid inside the skull.Normally the cranial vault is a closed box and non compliant structure containing volume of approximately 1500 ml ,comprissing 88% brain matter ,7.5% blood and 4-5 % cerebrospinal fluid . Monrroe kelle hypothesis concludes that any increase in the volume of an intracranial element must be met with an equal compensatory decrease in…

nationality and educational background are also not diverse enough. Hence, the result may only suitable to a specific group of people and we cannot say it’s a universal rule. Most importantly, as a matter of fact, when we see something “beautiful”, our optic nerve just processes it as a physical signal. This gives rise to the activation of certain neurons. Then after a series of complex chemical reactions, our brain finally produces a signal of pleasure, which we comprehend as “beauty”. In this…

aqueous humor in the eye due to the iris and trabecular meshwork being too close together which creates a closed angle where 270 degrees or more of the angle is occluded.1 Occlusion of the angle causes the intraocular pressure (IOP) to elevate. Optic nerve damage can occur if IOP is greater than 40 mmHg and permanent vision loss can occur if an individual's IOP is greater than 60 mmHg.2 The incidence of angle-closure glaucoma is variable but it is seen more frequently in individuals of Inuit,…