On the base of the frontal lobe it overlies the anterior perforated substance through which the striate arteries enter the interior of the brain. On the temporal lobe the olfactory cortex covers the rostral portion of the parahippocampal gyrus including a medial bulge known as the uncus or uncinate gyrus. From the olfactory cortex, olfactory information is relayed via the mediodorsal nucleus of the thalamus to the insular and orbitofrontal cortex. The insular cortex, which is buried in the depths of the Sylvian fissure, also
c. You may be able to look through the cornea and see the iris, the colored part of the eye, and the pupil, the dark oval in the middle of the iris. At the back of the eye is the optic nerve. To see the separate fibers that make up the optic nerve, pinch the nerve with a pair of scissors or your fingers. If you squeeze the optic nerve, you may get some white goop. That is myelin, the fatty layer that surrounds each fiber of the nerve.
The middle ear also contains the three tiniest bones in the human body. They are individually named malleus, incus, and stapes, but are collectively known as ossicles. These bones transmit sound waves from the middle ear to the inner ear and into the cochlea (Goldstein, 2010). The cochlea looks like a snail shell, and is divided into three fluid-filled parts. Two are canals called the scala tympani and the scala vestibuli.
Dermatome split the skin into 4 different sections the cervical, thoracic, lumbar and sacral, which helps identify where did the spinal cord injury affect the senses. Myotome is the group of muscles that a single nerve root innervates. The mayo tome splits the muscles into different categories, which helps in identifying which muscles groups have
It is also responsible for primary motor function, or our ability to consciously move our muscles, and the two key areas related to speech, including Broca’s area. The frontal lobe is larger and more developed in humans than in any other organism. As its name indicates, the frontal lobe is at the front of the brain. The right hemisphere of the frontal lobe controls the left part of the body, and vice versa. The frontal lobe is also the most common place for brain injury to
| 1.1. Quadratus labii superior: Is a broad sheet, the origin of which extends from the side of the nose to the zygomatic bone. Its medial fibers form the angular head, which arises by a pointed extremity from the upper part of the frontal process of the maxilla and passing obliquely downward and lateralward divides into two slips. One of these is inserted into the greater alar cartilage and skin of the nose; the other is prolonged into the lateral part of the upper lip, blending with the infraorbital head and with the Orbicularis oris. The intermediate portion or infraorbital head arises from the lower margin of the orbit immediately above the infraorbital foramen, some of its fibers being attached to the maxilla, others to the zygomatic bone.
The cartilage makes it possible for the diaphysis to grow in length, thus the epiphyseal plate is also known as the growth plate. Once growing stops the plate calcifies and is now called the epiphyseal line in adults. 4) Spongy bone tissue is very vascular and contains red bone marrow. Trabecular bone is another name for spongy bone tissue. The functional and anatomical unit of the spongy bone is the trabecula.
Research notes that the two hemispheres are not created equal. Research states that left side of the brain is responsible for literal understanding of information and drawing of inferences while the right side of the brain is responsible for emotional information and recognition of items. It was suggested that the consciousness was everywhere in the brain, not just on one side or the other. Eccles had proposed his theory that only the left side of the brain was responsible for consciousness. Continued research with split brain patients proved that it is the visual cortex that is responsible for assembling pictures from the visual world.
The epidermis is the skins most superficial layer and it is composed of stratified squamous epithelial tissue.2 The epidermis is divided into four or five general layer called the strata. The deepest layer is the stratum basale and it contains a single layer of cuboidal cells. In the epidermis with cells that actively grow and divide to produce new epidermis. The layer that is called the stratum basale is the stratum lucidum is only found on thick skin. The stratum corneum is another layer in the epidermis, and it is the most superficial startum.
& Mitterer, J. O., 2013). The temporal lobes also play a significant role in understanding language. It is important to understand that there are association areas in both lobes and it is these areas that combine and process information from the senses. So although there are specific areas where we know auditory information is processed, such as in the temporal lobes, or where motor functions are controlled, such as in the frontal lobes, the association areas make up the majority of these lobes. Which is why damage to any part of these areas on the left hemisphere of the brain can cause aphasia, which is having “impaired ability to use language” (Coon, D. & Mitterer, J. O.,