In the white matter area of the medulla oblongata contains ascending and descending nerve tracks which cross the brain and spinal cord. The protrusions in the white matter forms the pyramids with corticospinal nerve connect the cerebrum with spinal cord which controls the movement of voluntary muscles. These nerve tracks cross the left side to the right side of the body. The medulla regulates the force and heart rate through the cardiovascular system and medullary rhythmic area of respiratory center controls the respiratory processes. Other functions are controlling reflexes for vomiting, swallowing, sneezing and coughing and hiccupping.
In this condition, the wisdom tooth makes an attempt to emerge out of the gum and gets obstructed by the tooth in front of it. What are my options besides extraction? Your doctor will not prescribe an immediate removal if there can be some other solution to control. Tooth ache is caused when the area is infected with bacteria or cavity. Cleaning the area, which is perhaps slightly difficult, owing to the interior position at which it is located; can otherwise definitely relief pain.
Once the sound waves have rounded the corner of the ear canal, they cause the eardrum to vibrate, stimulating the ossicles of the middle ear (tiny bones called the malleus, incus and stapes – otherwise known as the hammer, anvil and stirrup). These ossicles transmit the sound waves to the cochlea. (Bailey, 2013). The cochlea is a fluid-filled structure in the middle ear. The sound waves are translated to fluid waves in the cochlea that are then sensed by nerves connected to fine hairs that float in the fluid and is then sent on to the brain for interpretation.
Retinal detachment The retina is a complex layer of tissue that chemically converts light into electronic impulses and sends these impulses to the brain for analysis. It is made of layers of nerves, connecting cells known as neurons, supporting cells, and specialized cells known as rods and cones that do the actual conversion from light to chemicals that stimulate the nerves that transmit the impulse to the brain. Behind the rods and cones is a layer of pigment that absorbs light and helps the rods and cones to recover chemically for the next light impulse. The retina lines the back of the eye as the film in a camera. Behind or beneath the retina is a layer of blood vessels and pigment called the choroid.
Each sensory receptor in the skin connects with a neuron in the central nervous system through various relay neurons. Along the way, sensations are converted into electrical signals. The neurons on this pathway delineate the contralateral. These signals travel along axons to the central nervous system. Their journey is comprised of being transmitted through the spinal cord, past the medulla where they cross, through the thalamus, and finally to the parietal lobes, specifically the postcentral gyrus.
The frontal sinus is therefor able to communicate with, and drain its contents into the ostiomeatal complex because of the connection between its frontonasal duct (recess) and the ethmoidal infundibulum. The uncinate process, which forms the anterior and medial limitation of the hiatus semilunaris and the ethmoidal infundibulum (respectively), is a thin, crescent shaped, bony leaflet that emerges from the ethmoidal labrynth
Nomenclature of intervertebral disc is such that it takes the name of the vertebra cephalad to it. The disc between L4 and 5 will be called L4 disc. Dorsal root ganglion (DRG) is present at the level of the intervertebral foramina and it is in the confines of the foramina. Three branches arise distal to the DRG- Ventral ramus, Dorsal ramus and sinuvertebral nerve. The ventral ramus is the most prominent and most important branch and it supplies the structures ventral to the neural canal.
We can also say that, because the senses is the way our body communicates, we have at least three more senses: kinesthetic sense, which is our awareness of our body’s dimensions and movement; vestibular sense, which is the awareness of the human’s balance and spacial orientation; and organic sense, which is the manifest of the internal organs (for example, hunger or thirst). But can our senses trick us and affect what we know of the world? How can we know that the reality we know is simply a figment of our imagination? Perception can be divided into two parts: the sensation, which is what is provided by the world (the stimulus to the senses) and the interpretation, which is when our mind turns the sensation into information for us. Perception lets us interact with the world that surrounds us.
Deep to the capsule is a network of reticular fibres and fibroblasts which, with the capsule and trabeculae, make up the stroma. Lymph flow through the node is one-way, entering through several afferent vessels on the convex side of the node’s ‘bean shape’ which contain valves opening toward the node’s centre, directing lymph into the node. Lymph then flows through three sinuses, irregular channels containing branching reticular fibres, lymphocytes, and macrophages, first the subcapsular sinus, immediately beneath the capsule, then the trabecular sinuses extending through the cortex parallel to the trabeculae, and then into the medullary sinuses. All sinuses filter the
The hypothalamus communicates to each lobe differently. The hypothalamo-hypophyseal tract system is the specific way the hypothalamus communicates with the posterior lobe of the pituitary gland. It is a nervous system connection with direct connecting neurons. The neurons are located in the hypothalamus and then axons extend down to the posterior lobe of the pituitary gland. The neurons produce hormones that slide down the axons and end up in the posterior lobe.
The brainstem is located underneath the limbic system is the brain stem. The midbrain includes the tectum and tegmentum. The brain stem is made up of the midbrain, pons, and medulla. The midbrain is the rostral part of the brain stem. The pons are a part of the metencephalon in the hindbrain.
The brain is the control centre for the nervous system The nervous system is split into two; -central nervous system; *brain *spinal cord -peripheral nervous system; *sensory division- informs the central nervous system of outer changes *somatic division- sends instructions of movement to different muscles *autonomic division- controls the running of inner organs -autonomic nervous system -somatic nervous system
The somatic nervous system is made up of sensory organs and nerves that connects to the skin, also that connects to all the skeleton muscles. The Somatic nervous system has two neutrons. Those two neutrons are sensory neurons and motor neurons. The sensory neurons job is to carry information to the central nervous system. The motor neurons job is to carry information from the brain and spinal cord to the muscle fibers throughout the
A toothbrush that is too small can be ineffective, while a toothbrush that is too big is not only ineffective, but it also could also injure the soft tissue inside your mouth. For most adults, the ideal toothbrush has a head that is one inch long by a half inch across. This will provide adequate surface coverage when cleaning your teeth, but still allow you to reach the back of your mouth to get those hard-to-reach molars. Unless your Avon, CO dentist tells you otherwise, a soft-bristle brush is ideal for cleaning your teeth without damaging your enamel or injuring your gums. Hard bristles are unnecessary in most cases; they can be dangerous and cause more problems than they solve.