Review Sheet Exercise 6 Cardiovascular Physiology Essay

REVIEW SHEET EXERCISE 6 Cardiovascular Physiology NAME: LAB TIME/DATE: 1. Define each of the following terms: †¢ autorhymicity- The heart is autorhythmic. This means it generates its own rhythmic action potential independent of the nervous system. †¢ sinoatrial node- is the impulse-generating (pacemaker) tissue located in the right atrium of the heart, and thus the generator of normal sinus rhythm. †¢ pacemaker cells- are specialized cells that cause involuntary muscles and tissues to contract or dilate. †¢ vagus nerves- carry a wide assortment of signals to and from the brain, and they are responsible for a number of instinctive responses in the body. 2. The sympathetic nervous system releases the neurotransmitter-†¦show more content†¦This allows your cardiovascular centres in your brain a little bit more latitude as far as controlling your heart rate. If you were to remove a beating heart from someones body you would find that the heart is no longer being suppressed by the parasympathetic nervous system and it will accelerate to the same pace as the sinoatrial node. The SA node generates action potentials approximately 100 times per minute due to the physiology of the heart, its own permeability to sodium and calcium via its channels, and a host of other things. Anywhere between 80 to 100 beats per minute is normal for the SA node. 7. What are two key differences between cardiac muscle and skeletal muscle? cardiac is involuntary, skeletal is voluntary cardiac is unstriated, skeletal is striated 8. What is the difference between the effective refractory period and the relative refractory period? The effective refractory period is the time in which the cell is incapable of responding to a second stimulus between the phases of 0-3.5, while the relative refractory period is the time in which the cell is making preparations to receive stimulus between phase 3.5-4. 9. When the heart is externally stimulated just after the start of the contraction cycle, why does this have no affect on heart rate? This is because once a contraction has started, the action potential has already fired, stimularing the muscle fibers. Once theyShow MoreRelatedAnswers Lab07 Microcirculation1105 Words   |  5 PagesM34_MARI0000_00_SE_CH34.qxd 34 3/29/11 4:47 PM R E V I E W Page 218 S H E E T NAME ____________________________________ EXERCISE LAB TIME/DATE _______________________ Frog Cardiovascular Physiology Special Electrical Properties of Cardiac Muscle: Automaticity and Rhythmicity 1. Define the following terms. automaticity: Ability to depolarize spontaneously in the absence of external stimulation. rhythmicity: Depolarization/repolarization events occur in a regular and continuous manner. 2.Read MoreAnswers Lab06 BP1971 Words   |  8 Pages____________________________________ EXERCISE LAB TIME/DATE _______________________ Human Cardiovascular Physiology: Blood Pressure and Pulse Determinations Cardiac Cycle 1. Using the grouped sets of terms to the right of the diagram, correctly identify each trace, valve closings and openings, and each time period of the cardiac cycle. a c 1 2 b g 3 4 5 d 120 i f h Pressure (mm Hg) i 1. aortic pressure k 2. atrial pressure n 3. ECG o 4. first heart sound p 5. second heart sound g 6. ventricular pressureRead MoreCorrelation Between Aerobic Fitness And 4km Cycling Performance2602 Words   |  11 Pagesfluctuated from study to study. 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The lungs are the primary organ of the respiratory system that performs this function.Read MoreCase Study on Hypokalemia8797 Words   |  36 PagesErythematosus December 2010 Table of Contents Acknowledgement†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.. 3 Objective†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. 4 Scope and Limitations............................. 5 Introduction†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.. 6 Review of Related Literature†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦ 7-8 Case Analysis†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦ 9 Health History†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.. 10 Family Genogram†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. 11 Anatomy and Physiology†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. 12-13 Pathophysiology†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦ 14-17 Nursing Assessment Tool†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. 18-20 Nursing Care Plans†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦ 21-23 Medical management†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦ 24-26 Laboratory Results†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Read MoreGeriatric Assessment7902 Words   |  32 PagesAs you can see, it moves well beyond the standard HP, which is precisely the point. We have designed it to correlate as closely as possible with the history and physical you will be learning later this year. It is to your considerable advantage to review this information before meeting your patients face-to-face on the site visits. The DGA instrument you will use during your encounter immediately follows this section. History and Physical (adapted from Physical Diagnosis course) The History DemographicRead MoreThesis About Call Center Agents14127 Words   |  57 Pagesmany new graduates who are considered to be unemployed. After the long weekend parties, holidays, and vacation trips a month ago, you should have recently wondered hey whats next for me now? Well you are not alone. In fact, many of my review mates in a local review center headed to many local BPO companies here in our city. BPO or business process outsourcing involves the contracting of the operations and responsibilities of specific business functions (or processes) to a third-party service providerRead MoreSample Lit Review on Hypertension11736 Words   |  47 Pages2. Literature review This chapter reviews the literature on hypertension and hyperlipidaemia and their relation to risk factors including age, gender, genetics, diet and weight, alcohol, smoking, lack of activity and co-morbidity. It also examines mediating factors including economic factors, stress/personality, medications, lifestyle modifications and complementary therapies including foot reflexology and foot massage. Finally, it reviews outcomes (quality of life) including physiological, psychologicalRead Morepreschool Essay46149 Words   |  185 Pagesdomains often receive less attention than some of the other domains, but they are equally important for preschool children’s overall learning and development. 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