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15 Cards in this Set
- Front
- Back
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4 heart rate regulation factors
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nervous regulation - hormonal regulation - body temperature - baroreceptors
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2 types of nervous regulation
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cardiac inhibitory center - cardiac accelerator center
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cardiac inhibitory center is located
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medulla
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the cardiac inhibitory center is part of the ____ in the autonomic NS
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parasympathetic NS
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what is the main nerve of the cardiac inhibitory center
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vagus nerve
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the cardiac inhibitory center continually ____ heart to maintain …
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slows - average of 70 BPM
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cardiac accelerator center is located
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medulla
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the cardiac accelerator center is part of the ____ in the autonomic NS
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sympathetic NS
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the cardiac accelerator center __creases ____ ____ & ____ ____ ____ when needed
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increases - heart rate - force of contraction
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4 hormonal regulation accelerators
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epinephrine - norepinephrine - thyroxine - T3
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in heart rate regulation, body temperature regulates, ↑temperature =
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↑heart rate
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in heart rate regulation, body temperature regulates, ↓temperature =
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↓heart rate
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2 types of baroreceptors (pressoreceptors) for heart regulation
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carotid sinus + aortic arch - bainbridge (atrial) baroreceptor
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function of carotid sinus + aortic arch in heart rate regulation (4 steps)
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stretch → impulses to inhibitor center → vagus nerve → ↓heart rate
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function of bainbridge (atrial) baroreceptor in heart rate regulation (3)
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measure intra-atrial pressure - stimulate accelerator center - ↑heart rate + force of contraction
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