Medulla oblongata

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  • Medulla Oblongata Case Study

    Researcher Dr. Hannah Kinney and her team at Boston Children’s Hospital and Harvard University specifically draw attention to the neurotransmitter serotonin found in the medulla oblongata, (also referred to as 5-hydroxytryptamine or 5-HT (Kinney et al. 2009). The 5-HT plays a central homeostatic role in nearly every aspect of the central nervous system. 5-HT controls breathing, blood pressure, body temperature, and arousal. It is believed that low levels of neurotransmitter serotonin found in infants who have suffered fatalities as a result of SIDS could result in abnormal development of the dentate gyrus in the hippocampus. The hippocampus is responsible for learning, spatial orientation and memory. Similar to the 5-HT, through its neurological connections to the brain stem the hippocampus also affects cardiorespiratory function. (Brock et al.…

    Words: 941 - Pages: 4
  • Auditory Brainstem Analysis

    Once learning the basics about Cerebral Palsy (CP), I chose to dig deeper into the more modern diagnostic tools and treatments. As an aspiring Audiologist, I looked into tools I would one day use if I were on a case with an individual with CP and found an article about the Auditory Brainstem Response (ABR) tool that is being used to determine hearing loss and likelihood of other related disabilities in tandem with CP. The study done showed significance in correlation with most other causes of CP…

    Words: 1654 - Pages: 7
  • Implications Of Alpha Waves

    This set of events causes blood glucose, blood pressure and blood volume to increase, the immune system to become stop working as efficient, and energy to increase through the conversion of fats into glucose. Whereas undergoing acute stress, starts with the sympathetic nervous system. Here the hypothalamus shoots nerve impulses into the spinal cord, which then travels to the preganglionic sympathetic nerve fibers, and finally the adrenal medulla which promotes catecholamines such as epinephrine.…

    Words: 757 - Pages: 4
  • Difference Between Ventilation And Perfusion

    Ventilation and perfusion work together in the body to provide oxygen and dispose of carbon dioxide. Ventilation provides tissue and organs oxygen by the process of mechanical inspiration and exhalation of the lungs. This provides the alveoli within the lungs with oxygen, as well as the ability to expel waste products like carbon dioxide. Perfusion provides the tissues and organs with oxygen by the mechanism of diffusion between the pulmonary capillaries and alveoli. Ventilation Ventilation…

    Words: 1162 - Pages: 5
  • The Three Phases Of Deglutition

    This phase is characterized by movement of the bolus through the pharynx to the superior esophageal sphincter. There are several mechanisms to achieve this movement, which can be summarized as the swallowing reflex. The swallowing reflex is stimulated when the bolus comes in contact with sensory receptors located in the oropharynx, which stem up to the swallowing center within medulla oblongata (McKinley 1031). The medulla oblongata then sends a signal down to the larynx, causing the…

    Words: 903 - Pages: 4
  • Essay On Blood Pressure

    Angiotensin II, as a strong vasoconstrictor, increases blood pressure by stimulating the systemic vascular resistance and the raise of the blood volume, therefore the blood pressure too.Angiotensin II also stimulates the production of aldestorne by the adrenal cortex.Aldosterone provoke kidneys to reabsorp more sodium ions and water. Due to the sympathetic stimulation,the adrenal medulla secretes epinephrine and norepinephrine,which raise the heart rate and respectively,the cardiac…

    Words: 761 - Pages: 4
  • Three Reasons For The Degree Of Exercise And The Pulse Rate

    more frequently. → Not enough oxygen is supplied to the skeletal muscles for aerobic respiration. → Skeletal muscle cells carry out anaerobic respiration to generate additional amount of energy to support the increased contraction of skeletal muscles. → More lactic acid is produced in anaerobic respiration and cause muscle fatigue. → Some lactic acid diffuses into the blood and the lactic acid concentration in blood increases. → Blood pH decreases. → Chemoreceptors in aortic and carotid bodies…

    Words: 999 - Pages: 4
  • Organ System Essay

    the central nervous system, the brain and spinal cord, and the peripheral nervous system, all extending nerves and sensory receptors. The central nervous system sends out impulses in response to stimuli and necessary functions at up to two hundred and eighty miles per hour. Nerves are made up of neurons are classified based on function: sensory, motor, and interneurons. Sensory neurons send messages based on their specific sense to the brain. Motor neurons control the contraction and extension…

    Words: 1300 - Pages: 6
  • Divisions Of The Human Brain

    and the inferior colliculi. The tectum controls the auditory and visual responses. The colliculi are responsible for processing visual information from the ears and eyes. The superior colliculi processes visual information then relays it to the primary visual cortex which is located in the occipital lobe. The inferior has a different job, which is to process auditory information before the information is relayed to the primary auditory cortex (Davies, 2011). The lowest part of the brain is…

    Words: 1081 - Pages: 5
  • The Importance Of The Human Brain

    brain works! Ironic to think, but yet it is just as sad. Since the existence of mankind the human brain has constantly been evolving, growing stronger into the intricate, sophisticated organs of the present. By natural selection, certain people have a brain that is more developed than others and is able to function at higher levels than others, due to adaptation. Each part of the brain is responsible for a specific process and damage to any part can be crucial. The brain consists of three main…

    Words: 1785 - Pages: 8
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