Cooling Rate of Certain Liquids Scientific Investigations Experiments to Determine the Cooling Rate of Coffee, when Milk should be Added and what Container should be Used The aim of the first experiment was to find out and record the cooling rate of coffee under three different conditions and thus showing when milk should be added assuming you have a phone call. The three different conditions were chosen because these were the most likely situations encounted by someone who is making a cup
Wernicke’s Aphasia Wernicke’s Aphasia Background Aphasia can be defined as a disorder that is caused by damage to parts of the brain that are responsible for language (“Aphasia” n.p.). Wernicke’s aphasia is a type of fluent aphasia (with the other type being nonfluent). It is named after Carl Wernicke who described the disorder as “an amnesiac disorder characterized by fluent but disordered speech, with a similar disorder in writing, and impaired understanding of oral speech and reading” (“Wernicke’s”
(1) . Those with expressive aphasia "can speak but not find certain words or names, or may be totally unable to communicate verbally or by writing" (1) . For a majority of affected individuals, there is a combination of the two. The third type is conduction aphasia. This "involves disruption of transmission between the sensory and motor ends of the circuit" (1) . Here, individuals are able to produce speech despite the lack of connections to the input side. It seems that the ability to speak has a
keeping the water hotter for longer. SCIENTIFIC KNOWLEDGE Basically it is due to three factors CONDUCTION, CONVECTION and RADIATION. 1. CONVECTION - the hot water in both cups will have convection current in them. The hot water will rise and sink as the water begins to cool. This means the heat energy is being passed on to the metal cup over most of its inner surface. 2. CONDUCTION - the metal cups will get hotter as a result of the heat energy inside the cup. The water will pass
Through the process of each heartbeat, cardiac muscle contraction follows an electrical sequence. This sequence is initiated at the SA node generating an impulse which spreads through the AV node causing atrial systole. The electrical impulse then follows the AV bundle, bundle branches and the purkinje fibers producing ventricular systole. Series of electrical currents through the heart are able to be traced on the body surface by an electrocardiogram or ECG machine, a device that records voltage
Commotio cordis occurs after a blunt, non-penetrating blow to the precordial area of the chest wall that results in the induction of an often fatal ventricular fibrillation in a heart that does not have a preexisting structural or electrophysiological cardiovascular disease (Yabek, 2011). The blow is often perceived to be irrelevant, yet can cause a debilitating injury or even death. Death may be sudden or after a brief period of lucidity with purposeful movement prior to collapse (Yabek, 2011).
are contracting too quickly and no clear P wave is identified because of this ‘fibrillation’ (Ignatavicius & Workman, 2013). Clinical Manifestations and Pathophysiology A normal heart rhythm begins at the sinoatrial node and follows the hearts conduction pathway without any problems. Typically the sinoatrial node fires between 60-100 times per minute (Ignatavicius & Workman, 2013). When a person has Atrial Fibrillation, the sinoatrial node releases multiple quick impulses at a rate of 350 -600
Creating a Flow Chart: Bradycardia Today’s healthcare environment is facing tremendous challenges in order to ensure safe, quality care, while simultaneously providing affordable care that is still able to produce revenue. With continuously escalating healthcare demands emerging from the population, healthcare providers and professionals have no choice but to accept these challenges and put forth the best possible approach to meet these demands involving patient care. New ideas for managing tests
3. Describe the electrical conduction system of the heart. The normal electrical conduction in the heart allows the impetus that is engendered by the sinoatrial node (SA node) of the heart to be propagated to, and stimulate, the cardiac muscle (myocardium). The myocardium contracts after stimulation. It is the set up, rhythmic stimulation of the myocardium during the cardiac cycle that allows efficient contraction of the pump, thereby permitting blood to be pumped throughout the torso. 4. State
The Human Nervous System The nervous system is the most complex part of the body, as they govern our thoughts, feelings, and bodily functions. It is an important factor in science because it can lead to new discoveries for cures or diseases. The studies of the nervous system helped lower death rates from heart disease, stroke, accidents, etc. The nervous system is a network of neurons (nerve cells that sends information to the brain to be analyzed. Neurons live both in and outside the central
membrane with myelin. This reduces the amount of current that would otherwise leak out of the axon and increases the distance that the current can flow passively. Myelination, aka axon insulation, increases action potential conduction up to 150m/s compared to 0.5-10m/s conduction velocities of unmyelnated axons! Speedy delivery of current (information) along axons is also due to the nodes of Ranvier. Nodes of Ranvier are gaps between insulated portions of the axon. The gaps create a place where
The processes of communication between distinct tissues and organs Among various types of organ systems, the nervous system is one of the most important one in human body. It is responsible for producing, controlling and guiding our thoughts and responses to the world around us according to James W. Pennebaker (2012). During embryological development, the cells that form nervous system are incredibly specialised and work complexly than the cells that form skin or other body parts. Neurosecretory
Multiple sclerosis (MS) is the interruption of signals of the nerve impulses due to the deterioration of the covering of the nerve fibers myelin sheath that covers the nerve fibers and axon in the (CNS) central nervous system and (SC) spinal cord (Compston & Coles, 2008). According to Goodman and Fuller (2015), the primary clinical manifestation of MS is visual deterioration (double vision, nystagmus, etc.) due to the affected optic nerve associated with demyelination of the cerebral cortex. Furthermore