A&P 2 - Exam 1 - Part 4 - Physiology, Blood Pressure
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| show | pressure gradient
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| show | Newton's first and second laws of motion
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| show | blood pressure gradient
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| What is the symbol used to stand for a pressure gradient? | show 🗑
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| show | higher, lower
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| show | volume
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| A direct relationship exists between arterial blood volume and ____________. | show 🗑
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| show | cardiac output
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| show | stroke volume and heart rate
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| What is volume pumped per heartbeat? | show 🗑
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| show | stroke volume
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| CO = _______ * _________ | show 🗑
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| show | Fick's
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| show | the same direction
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| What law influences stroke volume? | show 🗑
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| show | stronger
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| Starling's law: The amount of blood in the heart at the end of _________ determines the amount of _________ placed on the heart fibers. | show 🗑
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| The ______________ node normally initiates each heartbeat; however various factors can and do change the ___________ of the heartbeat. | show 🗑
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| show | aorta
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| show | carotid sinus
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| Baroreceptors affect the __________ and therefore parasympathetic and sympathetic outflow to aid in control of ______________. | show 🗑
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| show | internal carotid artery
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| Sensory fibers from __________ run through the carotid sinus nerve and the ___________ nerve to the cardiac control center. | show 🗑
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| show | parasympathetic, vagus nerve
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| show | baroreceptors, aortic, vagus, cardiac control center
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| show | sympathetic
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| Anxiety, fear and anger ___________ heart rate. | show 🗑
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| Grief _____________ heart rate. | show 🗑
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| show | cerebrum, hypothalamus
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| Exercise normally ___________ heart rate. | show 🗑
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| show | increases
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| show | decreases
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| show | peripheral resistance
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| Peripheral resistance is the resistance to ___________ imposed by the force of friction between blood and the ___________. | show 🗑
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| Arterial blood pressure tends to vary ____________ with peripheral resistance. | show 🗑
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| show | peripheral resistance
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| Friction is due to __________ and ___________ of arterioles and capillaries | show 🗑
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| show | constrict, dialate
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| show | peripheral resistance
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| _________ resistance and __________ arteriole runoff leads to __________ arterial pressure. | show 🗑
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| show | vasomotor control mechanism
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| _______________ plays a role in maintenance of the general blood pressure and in distribution of blood to areas of special need. | show 🗑
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| Vasomotor pressoreflexes: Sudden increase in arterial blood pressure stimulates aortic and carotid __________________ which results in arterioles and venules of the blood reservoirs _______________. | show 🗑
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| Vasomotor pressoreflexes: Decrease in arterial blood pressure results in stimulation of _____________ centers, causing vascular smooth muscle to _____________. | show 🗑
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| Vasomotor chemoreflexes: What are chemoreceptors located in aortic and carotid bodies sensitive to? | show 🗑
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| What acts during emergency situations when there is decreased blood flow to the medulla? | show 🗑
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| show | constriction
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| Impulses from centers in the cerebral cortex and hypothalamus are transmitted to vasomotor centers in the medulla to help control ______________. | show 🗑
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| show | cerebral cortex, hypothalamus, medulla
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| show | reactive hyperemia
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