Control Of BP&BV Part 3 Flashcards
The arterial baroreceptor reflex responses to decreases in BP by _________ cardiac output
Increasing
By minimizing fluctuations in BP, baroreflex helps ensure driving force for blood to flow to _______ organs
Critical
In a dog without baroreflexes, postural changes are with large uncontrolled variations in ___
Blood pressure
Baroreflex initiate compensations for disturbances in BP within _ second
1
The reflex does NOT _______ disturbances that alter BP but only minimizes their effects on BP
Reverse
The reflex has ______ influence on the long-term BP over days or weeks.
Little
What rreflex regulates blood volume and helps stabilize BP?
Atrial volume receptor reflex
What receptors are located in:
The walls of L&R atria
The walls of pulmonary veins
Atrial volume receptors
Atrial volume receptors in the alls of the L&R atria are activated by ______, but they are called volume receptors
Stretch
In conscious subjects, neural-hormonal control of cardio system involves cardio reflexes and ________ effects
Psychogenic
Psychogenic responses are often triggers by _______ stimuli like sights, sounds, and smells, but can occur without
Sensory
What is the reaction:
Collection of emotional, behavioral, and autonomic neural-hormonal responses to a threatening situation, physical injury, or trauma
Defense-alarm reaction
The heart beats at its intrinsic rate either in the abscence of any neural influence or when sympathetic and parasympathetic effects and ______ and ________
Equal
Opposite
Situations that severely agitate one animal may cause only a mild alerting response in another?
Subjective
Increase sympathetic and Decreases parasympathetic:
________ HR, stroke volume, and BP
Vaso_________ in noncritical organs
Vaso________ in coronary vessels and working skeletal muscles
Increased
Constriction
Dilation
