The heart rate of an individual varies with postural changes. An analysis of compiled physiology
student data showed that on average (n=166) heart rate increased 8 beats per minute (bpm) when
subjects transitioned from laying supine to seated upright. The heart rate increased due to a
baroreceptor reflex response to _ 1 blood pressure when sitting. When subjects transitioned from
a supine to a seated position, their blood moved from being evenly dispersed throughout their
body to being pooled in the lower extremities. This pooling resulted in ___ venous return, stroke
volume, cardiac output, and blood pressure. The _ 3 blood pressure was sensed by the
baroreceptors of the aortic arch and carotid sinuses. In response, the baroreceptors _ 4_ their
activity, and relayed the _ 5 in blood pressure via the glossopharyngeal and vagus nerves for
interpretation in the cardiovascular control center of the medulla oblongata (CVCC). The CVCC
___ parasympathetic nervous system activity, and ____ sympathetic nervous system activity. The
combined change in activity of the autonomic nervous system resulted in an _ 8_ firing rate of the
SA node, which led to the 8bpm_9 in heart rate. The 10 heart rate caused an and as a result,
blood pressure was likely 12 toward normal. 11 in cardiac output,.
The heart rate of an individual varies with postural changes.pdf
1. The heart rate of an individual varies with postural changes. An analysis of compiled physiology
student data showed that on average (n=166) heart rate increased 8 beats per minute (bpm) when
subjects transitioned from laying supine to seated upright. The heart rate increased due to a
baroreceptor reflex response to _ 1 blood pressure when sitting. When subjects transitioned from
a supine to a seated position, their blood moved from being evenly dispersed throughout their
body to being pooled in the lower extremities. This pooling resulted in ___ venous return, stroke
volume, cardiac output, and blood pressure. The _ 3 blood pressure was sensed by the
baroreceptors of the aortic arch and carotid sinuses. In response, the baroreceptors _ 4_ their
activity, and relayed the _ 5 in blood pressure via the glossopharyngeal and vagus nerves for
interpretation in the cardiovascular control center of the medulla oblongata (CVCC). The CVCC
___ parasympathetic nervous system activity, and ____ sympathetic nervous system activity. The
combined change in activity of the autonomic nervous system resulted in an _ 8_ firing rate of the
SA node, which led to the 8bpm_9 in heart rate. The 10 heart rate caused an and as a result,
blood pressure was likely 12 toward normal. 11 in cardiac output,
