The first heart sound, "lubb," marks the point when
the atrioventricular valves close
The difference between the end-diastolic volume (EDV) and the end-systolic volume
Contraction of the chambers of the heart is
Parasympathetic stimulation from the vagus nerve results in:
a decrease in heart rate
If blood pressure is increased at the arterial baroreceptors, what would happen with the activity level of the parasympathetic nervous system (PNS) and sympathetic nervous system (SNS)?
increased PNS activity and decreased SNS activity the PNS activity would increase and the SNS activity would decrease in an attempt to lower blood pressure.
To defend blood volume against dehydration, the body
experiences a recall of interstitial fluids.
increases water intake.
accelerates reabsorption of water at the kidneys.
experiences an increase in the blood colloidal osmotic pressure.
In response to hemorrhage, there is
mobilization of the venous reserve.
Homeostatic mechanisms in response to blood loss include all of the following
uptake of interstitial fluid due to reduced capillary pressure.
increased thirst and water intake.
activation of ADH secretion.
activation of aldosterone secretion.