Which of the following statement is TRUE regarding hemorrhage?
The stroke volume would fall, and pulse pressure would fall. Second choice is not correct because sympathetic vasoconstriction would lower capillary pressure and reduce filtration, which would tend to reduce hematocrit. Third choice is only paly correct because hea rate would increase reflexly, but filling pressure would fall and reduce the stroke volume. Fouh choice is not correct; remember that the firing of the sinus nerve is in response to stretch. Decreasing mean or pulse pressure would decrease the firing rate.
Pulse pressure decreases.
Hematocrit ratio increases
Stroke volume and hea rate increase.
Number of impulses traveling in the sinus nerves increases