Nerve Functions The functions of the Trigeminal nerve are different for the three divisions of the nerve. Those three divisions include: Opthalmic: predominantly motor, including the functions of the scalp, forehead, frontal and ethmoidal sinuses, upper eyelid and conjunctiva, and the dorsum of the nose Maxillary: predominantly motor, includes the functions of the areas including the cheeks and maxillary sinus, nasal cavity and lateral nose, upper lip, lower eyelid and conjunctiva, upper molar, incisor, and canine teeth, and the Superior palate. Mandibular: Both a motor and sensory part of the nerve. The motor functions include the areas of the mucous membranes and floor of oral cavity, external ear, lower lip, chin, anterior 2/3 of tongue, lower molar, incisor, and canine teeth. The sensory areas include Muscles of mastication, medial lateral and pterygoid, masseter, temporalis, anterior belly of digastric and mylohyoid muscle, and the Tensor tympani. …show more content…
The Opthalamic pertains to the upper portion of the face, the Maxillary pertains of middle portion of the face, and the Mandibular pertains to the lower areas of the face Protocol Opthalamic: Apply a light touch to both eyeballs to instigate a blinking response, also known as the corneal reflex Maxillary: apply a hot or cold object to the middle portion of the face pertaining to the Maxillary division. Note whether the participant can feel the sensation as well as if they can discriminate between whether the object os hot or cold. Mandibular: motor functions are tested by palpating the temporalis and masseter while the participant clenches their teeth. Also test the mandibular mobility by asking the participant to move the jaw up and down, as well as left and right. Expected
Purpose- To identify the functions of the cranial nerve of the peripheral nervous system such as the olfactory, optic, oculomotor, trochlear, trigeminal, abducens, facial, vestibulocochlear, glossopharyngeal, vagus, accessory, and the hypoglossal nerves. I will examine these functions with a series of behavior tests on my partner who is Jazmine Cooley to see if all nerves are functioning properly and if they are not, then this will be considered an identified dysfunction of a cranial nerve which is a diagnosis.
Optometrists have accepted vision therapy, which is a medical treatment for optical muscle disabilities, as a feasible treatment used for eye related problems; claiming the treatment can strengthen vision and give the patient the opportunity to understand visuals quicker and clearer (Press). Vision therapy originated in the 1950s and over the past 25 years, has gained popularity, mainly because of new technological innovations in the field of treatment. Generally, vision therapy is prescribed as a measure mainly for people between the ages of 3 and 18. With the results from a comprehensive series of eye tests, the optometrist can work with the patient using special instruments—prisms, filters, occluders, and eye lenses—and strengthen the eye muscles, thus improving sight. According to optometrists in favor of vision therapy, these methods of treatment using these instruments function as safer routes to repair eye disabilities. Although vision therapy can yield favorable results, the practice as a treatment for innate eye disabilities has been in hot debate lately; as it can exceed $8000 and insurance companies do not cover the treatment. For decades, insurance companies have refused to accept vision therapy as a legitimate method for repairing eyesight (Boink). Concomitant with lack of insurance, the cost for a full treatment can exceed $8000, and doctors cannot guarantee a successful outcome. Recently, parents of children with eye related disabilities, such as amblyopia (lazy eye) and strabismus (cross-eye), and doctors have attempted to cooperate with public schools to allow families access to school-funded doctors to practice vision therapy. With a tight budget, most schools cannot afford to supply vision therapy, and a...
The platyrrhine nose (on the left below) is relatively flat with somewhat sideways projecting nostrils separated by a wide septum. In contrast, the catarrhine nose (on the right below) has more downward projecting nostrils separated by a small septum.
Tooth surfaces are referred to by various names in dentistry, including mesial, distal, buccal, and lingual. If you drew a midline t...
The facial nerve fibers originate from the pons, lateral to the abducens nerves (Marieb & Hoehn). Branches enter the temporal bone through the internal acoustic meatus; they run through the inner ear cavity with the bone before they emerge through the stylomastoid foramen (Marieb & Hoehn). The facial nerve is the motor nerve to all of the muscles of expression in the face; it is distributed by multiple branches as it innervates various facial muscles including: the platysma, buccinator, the muscles of the external ear, the digastric, and the stylohyoid (Gray, 1995). Parasympathetic fibers of the facial nerve innervate the the lacrimal glands of the eyes, nasal and palatine glands, and the submandibular and sublingual salivary glands (Marieb & Hoehn).
Firstly, there is various of sensing activities as in seeing and hearing as in a sense of understanding of what is seen and heard. Secondly the sense of feeling in numerous parts of the body from the head to the toes. The ability to recall past events, the sophisticated emotions and the thinking process. The cerebellum acts as a physiological microcomputer which intercepts various sensory and motor nerves to smooth out what would otherwise be jerky muscle motions. The medulla controls the elementary functions responsible for life, such as breathing, cardiac rate and kidney functions. The medulla contains numerous of timing mechanisms as well as other interconnections that control swallowing and salivations.
This is a representation of the eye's lens system. This eye has no eye condition, such as nearsightedness or farsightedness, and the lens is drawn in its relaxed position. The light rays are focused appropriately on the retina. The thickness of the cornea is 0.449 mm, the distance from the cornea to the lens is 2.
the cornea and the sclera. The cornea is what covers the iris, and is the
Dendrites are located on either one or both ends of a cell.The peripheral nervous system then takes the sensory information from the outside and sends the messages by virtue of neurotransmitters. Neurotransmitters are chemicals that relay signals through the neural pathways of the spinal cord. The neurotransmitter chemicals are held by tiny membranous sacs located in the synaptic terminals. Synaptic terminals are located at the ends of nerve cells. The release of neurotransmitters from their sacs is stimulated once the electrical nerve impulse has finished travelling along a neuron and reaches the synaptic terminal. Afterward, neurotransmitters travel across synapses thus stimulating the production of an electrical charge that carries the nerve impulse onward. Synapses are junctions between neighboring neurons. This procedure is reiterated until either muscle movement occurs or the brain picks up on a sensory reaction. During this process, messages are being transmitted from one part of the body onto the next. The peripheral and central nervous system are two crucial subdivisions of the nervous system. The brain and spinal cord make up the central nervous
5) Olfactory Receptors, Vomeronasal Receptors, and the Organization of Olfactory Information. From Cell, a journal
One sub-system under the sensory system is the visual system; the main sense organs of this are the eyes. The eye is the sensory organ that allows us to detect light from external stimuli. When a light ray is detected, the eye converts these rays into electrical signals that can be sent to the brain in order to process the information and giv...
The Eye is the organ of sight. Eyes enable people to perform daily tasks and to learn about the world that surrounds them. Sight, or vision, is a rapidly occurring process that involves continuous interaction between the eye, the nervous system, and the brain. When someone looks at an object, what he/she is really seeing is the light that the object reflects, or gives off.