A patient has been presented to the emergency room immediately after a motor vehicle accident
that caused a large, massive hemorrhage. Which may still be unchanged from the baseline on a
CDC? ** Answer** Percentage of reticulocytes
Plasma osmolarity
hematocrit;What is the most abundant cell in the blood ** Answer** Red blood cells;The
most powerful determination of hemodynamic resistance in the vasculature is? ** Answer**
Vessel radius;Patient comes in, her pulse pressure needs to be calculated. Her systolic is 162 and
her diastolic is 78, what is her pulse pressure ** Answer** 78
(162-78);Patient comes in with polyacemhivera (abnormal amt. of red blood cells and white
bloods cells- too much) it makes blood extra viscous (thick), how would this affect
hemodynamics ** Answer** Increased viscosity with increased resistance;increased right
atrial pressure will do what to stroke volume and cardiac output ** Answer**
increase;relationship that demands cardiac output has to equal venous return (THEY NEED
BALANCE) ** Answer** frank-starling relationship;in exercise both cardiac output and
venous return do what ** Answer** increase;how much pressure the heart is beating against
is defined as ** Answer** total peripheral pressure;the resistance to blood flow that all the
veins and arteries provide (systemic side of circulation) is called ** Answer** total
peripheral resistance;change in pressure divided by resistance calculates? ** Answer** flow,
Ohm's law;total peripheral resistance is found by ** Answer** mean arterial pressure - right
atrial pressure / cardiac output;heart structure and function ** Answer**
pump;electrophysiology ** Answer** electric power;arteries and veins ** Answer**
pipes;carotid sinus has which pressure receptors ** Answer** barareceptors;venous and
, atrial have what kind of receptors ** Answer** low pressure;regulators of cardiac function
(3) ** Answer** ANS- baroreceptors and low pressure receptors
kidneys- renal receptors
endocrine- hormones;primary site of cardiovascular control ** Answer** medulla
oblongata;another name for "at rest" ** Answer** basal;sensory fibers carry information
about pressure to ______ of solitary tract? ** Answer** nucleus;in Basal signals: PSNS:
outflow is _________
in SNS:outflow is _______ ** Answer** activated
inhibited;If you have both SNS and PSNS working at the same time then what pathology could
occur ** Answer** stroke;nerve:
SNS:
PSNS: ** Answer** sympathetic nerves in sympathetic chain
vagus;Effects of PSNS
neurotransmitter is ____________: usually acting on muscarininc receptors ** Answer**
acetylcholine;Parasympathetic go to which part of the heart ** Answer** SA and AV
node;PSNS will do what to the heart function ** Answer** slow it down;does the PSNS
have a little or large effect on systemic vascular resistance ** Answer** little;what are the
neurotransmitters of SNS ** Answer** norepinephrine and epinephrine;SNS function
through which two receptors ** Answer** alpha
beta adrenergic;SNS function to do what to the heart ** Answer** increase HR
increase conduction velocity