substrates by enzymes acetylcholinesterase and butyrylcholinesterase‚ in the presence of various inhibitors (anticholinesterases). Acetylcholinesterase (or erythrocyte cholinesterase) is mainly found in red blood cells‚ neural synapse‚ cholinergic nerve fibres and muscle motor end-plates (Wang & Tang‚ 2005). Butyrylcholinesterase (or pseudocholinesterase) is localized in the plasma and liver‚ and unlike AChE prefers to hydrolise butyrylcholine‚ benzoylchline‚ procaine and suxamethonium more so than
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INTRODUCTION If an electric current flows through a conductor in a magnetic field‚ the magnetic field exerts a transverse force on the moving charge carrier which tends to push them to one side of the conductor. A buildup of charge at the sides of the conductors will balance this magnetic influence‚ producing a measurable voltage between the two sides of the conductor. This presence of measurable transverse voltage is the Hall Effect. The Hall effect was discovered in 1879 by Edwin Herbert Hall
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200. Reticular formation -Mass of neurons and nerve fibers extending from the caudal medulla to the rostral midbrain -comprises a neural system with multiple inputs and multisynaptic system of impulse conduction -one of the oldest parts of the rbain Functions : -regulating the sleep-wake cycle ‚states of consciousness -filtering incoming stimuli to discriminate irrelevant background stimuli (habitation) -Somatic motor control ( 1. ) reticulospinal tracts maintain balance
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b DEPARTMENT OF NURSING NURSING CARE PLAN |Student Name: p |Age: 89 | |Course number: Basic Skills & Concepts of Nursing |
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Every year thousands of pitchers hear some of the most dreaded words possible‚ “You need Tommy John Surgery.” Tommy John Surgery affects many baseball players every year and threatens a lot of athlete’s careers. Ulnar Collateral Ligament (UCL) damage can be common in both professional and college pitchers‚ as well as the occasional high school athlete. A damaged UCL often requires surgery‚ and an exceptionally long road to recovery. While it may put a career on hold‚ the ultimate goal is to allow
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lobes‚ one neural and one glandular. Posterior Lobe (Neurohypophysis) – composed of nervous tissue; releases neurohormones that it receives ready-made from the hypothalamus; oxytocin and anti-diuretic hormone (ADH); released on demand in response to nerve impulses from hypothalamic neurons. Anterior Lobe (Adenohypophysis) – composed of glandular tissue; manufactures and releases its own hormones as a result of stimulation by releasing hormones from the hypothalamus; called the master endocrine gland;
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Electrical stimulus- uses an electrical current to cause a single muscle or a group of muscles to contract Latent period- the time between the stimulation of a muscle and the start of the contraction phase 2. Acetylcholine is the chemical signal the nerve sends to the muscle to cause contraction. 3. The motor unit meets at the neuromuscular junction‚ where the axon terminal of a neuron and muscle fiber’s plasma membrane meet‚ also called the motor end plate. What occurs in this area leads to the
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force on them. A reactive centrifugal force is applied to the track by the cars. Centripetal force (from Latin centrum "center" and petere "to seek"[1]) is a force that makes a body follow a curved path: its direction is always orthogonal to the velocity of the body‚ toward the fixed point of the instantaneous center of curvature of the path. Centripetal force is generally the cause of circular motion. In simple terms‚ centripetal force is defined as a force which keeps a body moving with a uniform
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of vascular resistance which is the resistance that must be overcome in order to push blood through the circulatory system and create a steady flow. The greatest change in blood pressure and velocity of the blood flow occurs at the transition of arterioles and capillaries; therefore a decrease in the velocity of blood flow within the capillaries increases the blood pressure. Arterioles respond to various circulating hormones within the body in order to regulate their diameter‚ they respond primarily
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make it appear thick. The actin is‚ therefore‚ the thin filament The process by which the thin filaments are pulled in towards each other by the myosin is called cross-bridge cycling. It is how muscles contract. 3 CROSS-BRIDGE CYCLING: 1. A nerve impulse arrives at the neuromuscular junction. 2. The
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