Title of programme: Introduction to Biology and Essential Clinical Skills
Number of words: 2605
Introduction to Biology and Essential Clinical Skills (IBECS 2)
c) Effects of posture on blood pressure (week 12)
This laboratory report will discuss the effects of posture on blood pressure carried out in class. It was analysed the blood pressure of 10 individuals. Blood pressure was obtained in sitting posture (at rest), sitting (immediately after exercise), lying spine (after 5 minutes) and standing quickly from a spine position. Through these different types of posture I could detect the effects of posture on blood pressure.
Blood pressure is the contraction of the heart with each beat and contraction of blood vessels when blood passes through them. Blood pressure increases with each heartbeat and decreases when the heart contracts between beats. When the heart muscle contracts taking blood to be oxygenated in the lungs this is called systolic pressure and the diastolic pressure occurs when there is a relaxation in the heart muscle, this is the oxygenated blood coming from the lungs returns as deoxygenated blood to the arteries (Hales, 2011).
Sitting (at rest)
Sitting (immediately after exercise)
Lying spine (after 5 minutes)
Standing quickly from a spine position
At sitting position (at rest) the highest value was 140/60 mmHg and the lowest value was 92/66 mmHg. The average baseline for the blood pressure during the sitting position (at rest) was 118/68 mmHg. At sitting position (immediately after exercise) the highest value was 162/58 mmHg and the lowest value was 122/82 mmHg. The average for this posture was 141/76 mmHg.
At lying spine position the highest value was 140/70 and the lowest value was 108/70 mmHg. The average for this position was 116/65 mmHg. The last position was standing quickly from a spine position and the highest value according with the table was 160/85 mmHg and the lowest value was of 125/72 mmHg. The average for this position was 125/70 mmHg.
Heart is a muscular organ about the size of a person’s fist and is located in the center of the thorax. The heart is divided into the right and left side, the division protects oxygen reach blood from mixing with oxygen pure blood. Together the heart and the blood vessels comprise the cardiovascular system which circulates blood and oxygen around the body. The heart walls are composed of three layers, pericardium which is a fibrous layer that helps to protect the heart, another layer of the heart is the myocardium, this layer is the heart muscle and makes the contraction of the heart to pump blood around the body. The last layer of the heart is the endocardium; this layer lines the chambers of the heart.
The heart has four chambers, two atria and two ventricles. Each of these chambers is lined with endocardium, which makes blood flows easily through the heart (Marieb, 2010). The heart carries blood to all parts of the body in vessels called arteries (Edlin and Golanty, 2010)....
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