When one moves from the sitting or supine position, various vascular changes takes place. As one stands up gravitational pull acts on the extremities and reduce the venous return because blood is pulled towards the legs. This decreases the blood volume by about 300 to 800ml…
As the muscles are less stretched the force of contraction decreases which reduces the stroke volume. Decreased stroke volume results in decreased cardiac output and hence reduces blood pressure initially. This is also called orthostatic hypotension (reduced blood supply to brain due to reduced cardiac output causing fainting). However after sometimes, baroreceptor respond to this decreased blood volume and stimulates the cardio-accelerator center in Rostral Ventrolateral Medulla which cause noradrenergic discharge. Nor adrenaline then acts on Beta-2 adrenergic receptors on myocardium to increase the heart rate and force of contraction to increase the blood pressure to normal and thus maintaining homeostasis (Williams et al, 2004).
Q2. Analyzing the blood pressure it becomes evident that although there was a drop in mean systolic blood pressure (114mm Hg sitting versus 111 mm Hg standing, but it was not statistically significant as p value was > 0.05), even mean diastolic blood pressure decreased (76.3 mm Hg sitting versus 73 mm Hg standing but again it was not statistically significant as p value was > 0.05). However the mean pulse pressure ( difference between systolic and diastolic) increased(84.6 mm Hg sitting versus 87 mm Hg, but this was also not statistically significant as p value was > 0.05). This means that out of 100 observations more than 5 observations has happened due to chance factors of random sampling and change in posture has not statistically altered their blood pressure. Though statistically insignificant it is clearly seen that clinically or physiologically there is reduction of blood pressure from sitting and standing postures as discussed in question 1. The increased pulse pressure was due to the fact to compensate the reduction in cardiac output and increase the peripheral circulation (Williams et al, 2004) (Blair et al, 1980).
t tests are conducted to test the significance of difference between ...
Cite this document
(“Blood Pressure Lab Report Example | Topics and Well Written Essays - 1500 words”, n.d.)
Retrieved from https://studentshare.net/health-sciences-medicine/721745-blood-pressure
(Blood Pressure Lab Report Example | Topics and Well Written Essays - 1500 Words)
“Blood Pressure Lab Report Example | Topics and Well Written Essays - 1500 Words”, n.d. https://studentshare.net/health-sciences-medicine/721745-blood-pressure.
Section A Calculation for RBC Length of one smallest square = 1/20 mm Width of one smallest square = 1/20 mm Depth of one smallest square = 1/10 mm Volume of one smallest square = 1/20 x 1/20 x 1/10 = 1/4000 mm3 Total number of RBCs counted = 1036 (5 squares, 4 corners + 1 center) No.
Introduction Human beings consume caffeinated beverages on a regular basis. Caffeine can affect the central nervous system, increasing the blood pressure (Monroe, 1998). 200mg of caffeine pill makes one cup of coffee. Therefore, the caffeine pills used in this experiment were 200mg (Warren, 2010).
(American Heart Association, 2008) Body composition tests help us scrutinize and analyze if our body compositions, especially body fats, are at normal and healthy levels. A test such as the blood lactate measurement is used by sport scientists, coaches and athletes to accurately
ty of the emitted fluorescence light varies with the concentration of the ions (H+, Na +, K +) or the partial pressure of the gas molecules (O2 and CO2 ) in the sample in a predictable fashion. The relationship is specific for each analyte. Before the analyte can bind to the
The difference between two readings could be due to many reasons. The high value in the second test can be attributed to inadequate wiping of the pipette, improper mixing or uneven distribution in counting chamber.
Circulation is movement of blood through the blood vessels in the body to and from the heart. Both components are related in that CO2 is a waste product that has to be eliminated from the body through the process of respiration. Other waste products such as dead
his was the case as blood flow has to increase during strenuous activity (exercise) in order to supply nourishment (oxygen and nutrients) to critical organs such as the heart, brain, lungs and muscles. At the same time, diastolic pressure (the lowest pressure in the artery) at
1 Pages(250 words)Essay
GOT A TRICKY QUESTION? RECEIVE AN ANSWER FROM STUDENTS LIKE YOU!
Let us find you another Lab Report on topic Blood Pressure for FREE!