Pbsl1114Cardiovascular Dynamics Laboratory Report

PBSL1114 Physiology for Human Movement cardiovascular Dynamics Laboratory Report student ID 2010004614 Due date and Value This survey must(prenominal) be submitted as a soft copy via email to email&clxprotected hk no later than 500 pm 4 April 2012. Penalties apply for late submission, follow course out skittish strain for details. You must string up the laboratory session to get a mark for the related report. References used when answering questions must appear in a reference list at the closedown of your report. Value This report contributes 10% of your concluding grade. RESULTS Subject name Cheng Yat HinSex 0MF (circle)Age 21 skirt 1. Heart Rate (HR), sitting, deception and stand up Time (min)HR (b. min-1) session HR (readings 3 minutes post-sitting BP determination)30075 30577 31080 31580 32080 32580 33076 loaded sitting HR78. 29 hypocrisy HR (5 minutes afterward prevarication down)50070 50570 51068 51568 52070 52569 53069 pixilated Lying HR69. 14 rest HR- immedi ately after stand up(a)(a)(a) from fable000104 -10 sec after standing from lying01084 20 sec after standing from lying02086 30 sec after standing from lying03088 rest HR- 2 min after standing from lying80 Table 2.Blood Pressure (BP), sitting, lying and standing. BP readerSystolic BP (mmHg)Diastolic BP (mmHg)MAP (mmHg) Sitting BP11227490 21207489. 33 31237188. 33 41237289 51217489. 67 Mean sitting BP121. 87389. 27 Sitting BP (automated BP monitor)1087082. 67 Trial Lying BP 11035269 2985670 Mean Lying BP100. 55469. 5 Standing BP Standing BP ASAP after standing from lying12989102. 33 Standing BP 2 min after standing from lying1208395. 33 Re live air from a account bag. Resting sitting HR pre-breathing into bag75 (b. min-1) HR after 30 seconds breathing into bag 70 (b. in-1) HR after 120 seconds breathing into bag75 (b. min-1) Human diving resolution. Water Temperature 17 o C HR (b. min-1)Systolic BP (mmHg)Diastolic BP (mmHg)MAP (mm Hg) Pre- preoccupancy ( submerging position)7 11187388 At 30-sec immersion (1)431467699. 33 At 30-sec immersion (2)511298197 Average deviation of immersion set from pre-immersion lever-2419. 56. 510. 165 QUESTIONS (marks shown in brackets total = 30, share of final grade = 10%) Answers must not be longer than the recite of lines stated at the end of several(prenominal)ly question (10 pt font minimum).Answers special the stated limits willing receive a mark of zero. Use your own words. This is an individual report. Plagiarism (e. g. , copying or alter answers, not referencing sources) will be penalized. tag will be deducted if you break any of these rules. Include the references you used in a list at the end of your report. 1. tag for data recording (correctly/neatly) and calculations (DO NOT ANSWER) _____ (5) 2. argon the relationships between resting look ons for HR temporary hookup lying, sitting and standing (2-minute post-lying value) what would be pass judgment?Justify your response. (maximum 4 line response) (5 marks) From lying to sitting to standing, the resting HR is pass judgment to increase, which the center is shown in the guinea pig (lying mean value = 69. 14 bpm, sitting mean value = 78. 29 bpm and standing after 2 min = 80 bpm). From lying to sitting to standing, more origin is pulled downwards by soberness to the dishonor ruin of the body, making less venous try thus lowering the stroke volume. To constitute the belittle of SV thus to suffer the cardiac output, HR increases. 3.Are the relationships between resting values for BP darn lying, sitting and standing (2-minute post-lying value) what would be pass judgment? Justify your response. (maximum 4 line response) (5 marks) The contrast pressure should gradually rise from lying to sitting to standing, which is observed in the beat (MAP of lying 69. 5mmHg, sitting 82. 67 mmHg and standing 95. 33 mmHg). From lying to sitting to standing, more split is pulled downward by gravity to the lower part of the body. To push the blood upward so as to maintain enough blood flow to the brain, blood pressure needs to increase for functional against the effect of gravity. . Explain the commutes observed in HR and BP during the period following the shell moving from lying to standing. (maximum 4 line response) (5 marks) When the subject moving from lying to standing, BP should give momentarily and HR should rise. The switch in BP is payable to the pooling of blood in the lower part of the body. After sensing the drop in BP, the baroreceptor increases HR by the mastery of SNS and PNS. Then BP should rise again as the result of increased HR. The change is not seen in the subject. It might be due to other factors like the psychological factors cover version the effect, or errors in measurement. . Were the observed changes in HR when your subject was rebreathing air from a paper bag as expect? Explain your answer with reference to what was expected and why. (maximum 4 line response)(5 marks) The ris e in HR is expected when the subject is rebreathing air. The prediction is due to the increased CO2 meanness in the expired air will increase the blood PCO2, which be discover by the chemoreceptors in carotid and aortal bodies. The receptors will then relay the discipline to CNS and indirectly leads to the increase in HR by autonomic nervous system.But the effect is not observed in the subject. 6. What is the human diving response? Did your subject show the diving response? (maximum 4 line response)(5 marks) Human diving response is the increase in MAP and decrease in HR as a result of breath holding and the reflex after the face touched water. This is through by the increased parasympathetic activities to the nucleus pacemaker cells (lower HR), increased sympathetic activities to limbs lead to vasoconstriction in the limbs (increase MAP). The subject showed the diving response, as there is a egative change in HR and a positive change in MAP 30s after immersion List of refere nces used 1. http//ep. physoc. org/content/23/1/1. full. pdf+html 2. http//www. livestrong. com/ hold/307646-posture-heart-rate/ 3. http//www. livestrong. com/article/268891-heart-rate-body-positions/ 4. http//www. livestrong. com/article/299614-blood-pressure-supine-vs-standing/ 5. http//en. wikipedia. org/wiki/Aortic_body 6. http//en. wikipedia. org/wiki/Cartoid_body 7. http//www. mendeley. com/research/mechanism-human-diving-response/