Divisions of the Telencephalon The brain is divided into three parts, namely the forebrain, midbrain and the hindbrain. Telencephalon is the anterior part of the forebrain and contains the left and the right cerebral hemispheres(Freberg, 2009). The main divisions of the telencephalon are the cerebral cortex, which is made up of gray matter, the hippocampus, the amygdala, the olfactory bulb and the basal ganglia. Primary functions of each division Each division of the telencephalon has a number of functions as listed below. Cerebral Cortex This is the outer covering of the cerebral hemispheres that has a wrinkled appearance which provides enough surface area for cortical cells(Freberg, 2009).
1. The clinical macula is smaller in area than the anatomical macula. The clinical macula appears as a small and fuzzy dark spot and can be distinguished through the pupil by clinical observation with an ophthalmoscope. The anatomical macula is not distinguishable through an ophthalmoscope as it is defined histologically; that is in terms of having two or more layers of ganglion cells. The anatomical macula is larger and encloses the clinical macula.
The nervous system consists of two divisions; the central nervous system and the peripheral nervous system. The central nervous system is the combination of the nerves within the skull and spine, while the peripheral nervous system is the nervous system that goes everywhere inside (autonomic nervous system) and outside (somatic nervous system) around the body except skull and spine. The somatic nervous system has two kinds of nerves; afferent nerves that carry sensory signals from the external parts of the body to center, and efferent nerves which carry motor signals from central nervous system to muscular system. The autonomic nervous system also has afferent and efferent nerves and afferent nerves carry sensory signals from internal organs
The brain stem links the brain with the spinal cord and moves muscle. The limbic system links together our emotions, and how we respond to certain things or events. Finally, the cerebral cortex which is the biggest part of the brain. It is divided into four areas called lobes. Some areas process information from our senses, allowing us to see, feel, hear, and taste.
Abstract: Iris Melanoma is nothing but type of eye tumor. Iris is colored part of eye that surrounds pupil. The Melanoma is evil tumor grows and develops in tissues in middle layer of eyeball. Symptoms of Melanoma are dark spots in iris section of eye , change in size as well as shape of pupil, changes in vision. To detect these dark spots the proposed system is developed.
We are able to see objects by the reflection of light an object emits which passes through different structures in our eyes. Light passes first through the cornea, lens, and pupil, which are located in the front part of the eye. The light then moves to the back of the eye where the retina is located. Contained in the retina are sensory receptors called rods and cones, also known as photoreceptors. When
Cerebellum is a complex structure of neurons located at the base of structure in the posterior fossa. It lies back to the occipital lobe of the brain and dorsal to the brainstem, at the level of the pons and the medulla. The cerebellum is separated from the brain stem by the fourth ventricle. It is also connected to the brainstem by three branches: 1. superior cerebellar branch 2. medial cerebellar branch 3. inferior cerebellar branch Cerebellum functions as the motor brain and it is important for many functions ex: maintenance of balance, to control the posture, gait stability, it also helps in the coordination of voluntary movement, and in the motor learning. So the cerebellum has been considered as the motor structure, it is also important
7) SD-OCT showed diffuse deposition of hyperreflective material between the RPE and the Bruch’s membrane resulting in diffuse RPE elevation. Additionally, we observed a focal serous retinal detachment associated with hyperreflective dots in the interdigitation zone of the foveal region. The OCT-A choriocapillaris segmentation showed a high flow structure composed of filamentous linear vessels, forming anastomoses and loops, associated with a peripheral arcade surrounded by a dark halo. (Fig. 8) Case
In some cases following corneal thinning, acute hydrops or corneal perforation may result. Abnormal corneal protrusion occurs above the region of thinning, this leads to irregular astigmatism. In Pellucid Marginal Degeneration the cornea is known as a "beer belly cornea". This is because the cornea has a more flattened shape and droops over the inferior limbus . Pellucid Marginal Degeneration is differentiated from other corneal thinning disorders in that the area of thinning is avascular, without lipid deposition, clear, absence of corneal scarring and it lacks Rizutti's sign and Munson's sign
They showed pantomimes are more impaired when there is a left hemisphere lesion, while intransitive gestures are more impaired bilaterally. More recently, Flores-Medina, Chávez-Oliveros, Medina, Rodríguez-Agudelo and Solís-Vivanco (2014) found that in brain damage patients, after unilateral ischemic stroke, intransitive gestures are more impaired in patients with left hemisphere lesions, and pantomimes are more impaired
The next part of the eye is the iris, which controls the pupil’s size. The pupil changes size depending on the amount of light in the environment based on the iris’ opening. After the light moves through the cornea and pupil, the light travels through the eye to the retina by the lens. The lens will change its shape in order to bring objects into focus for the retina. The retina contains “photoreceptor