Physiological Response to Stress

Physiological Response to Stress
Student’s Name
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Introduction
Cardiovascular system functions as a network pathway for transportation of substrate and
oxygen to the peripheral organs and excretion of waste products such as heat and carbon dioxide.
This report is mapped to investigate the functioning, to express and elaborate the cardiovascular
reactions due to stress. In order to determine the holistic and the most appropriate stressors that
affect the blood pressure and the heart rate, several practical measures have to be performed. The
measures include; systolic blood pressure (SBP), diastolic blood pressure (DBP), heart rate (HR)
and also determine the mean arterial pressure (MAP).
Aim
The main aim of the practical was to determine the actual regulation of blood pressure at
the time when a person is experiencing some physiological challenges. The practical aimed
elaborating the understanding of the heart regulation through practical experimentations of
diastolic and systolic blood pressures and the heart rate using the sphygmomanometer and
stethoscope. All the practical test was carried out including the handgrip, change in posture and
cold pressor test with an overall objective in human physiology to acquire the integrated result of
how blood pressure in human circulation system behaves due to stressors and how it is regulated.
Question 1:
Orthostatic hypotension is the decrease in systolic blood pressure (SBP) of 20 mm Hg or
in the other hand the decrease of the diastolic blood pressure (DBP) of 10 mm Hg after standing
for around three minutes in comparison to the blood pressure while in a supine or sitting
position. According to the experimental result, orthostatic hypotension did not occur because the
difference between the SBP while at the supine position and after standing is less than 20 mmHg