Cardio II Ultimate Exam | Questions and Answers
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The set point can change during exercise, hypertension, and heart failure.
Choose an answer
1 Heart rate 2 Parasympathetic Efferent Nerves
What factors can change the
3 Parasympathetic Modulation 4
baroreceptor set point?
Don't know?
Terms in this set (81)
, Heart rate Regulated by autonomic nerves
SA and AV node pacemaker cells Generate intrinsic pacemaker potentials leading to
rhythmic heart beating
Depolarization Occurs due to voltage-gated Na+, Ca+ channels
Sympathetic modulation increases rate of depolarization of pacemaker
potential, increases HR (tachycardia)
Parasympathetic Modulation Decreases rate of depolarization of pacemaker
potential, decreases HR (bradycardia)
What is predominant at rest in terms Parasympathetic tone
of autonomic tone?
What is the resting heart rate (HR)? 60-67 bpm
What effect does atropine have on Increases HR markedly
heart rate?
What is the sympathetic tone at rest? Minimal
What effect does propranolol have Decreases HR slightly
on heart rate?
What happens when atropine and Unmasks intrinsic HR (100 BPM)
propranolol are combined?
What is the state of autonomic tone No autonomic tone
at rest?
| Verified Solutions | 2026 Edition | Pass
Guaranteed
Save
Practice questions for this set
Learn 1 /7 Study using Learn
The set point can change during exercise, hypertension, and heart failure.
Choose an answer
1 Heart rate 2 Parasympathetic Efferent Nerves
What factors can change the
3 Parasympathetic Modulation 4
baroreceptor set point?
Don't know?
Terms in this set (81)
, Heart rate Regulated by autonomic nerves
SA and AV node pacemaker cells Generate intrinsic pacemaker potentials leading to
rhythmic heart beating
Depolarization Occurs due to voltage-gated Na+, Ca+ channels
Sympathetic modulation increases rate of depolarization of pacemaker
potential, increases HR (tachycardia)
Parasympathetic Modulation Decreases rate of depolarization of pacemaker
potential, decreases HR (bradycardia)
What is predominant at rest in terms Parasympathetic tone
of autonomic tone?
What is the resting heart rate (HR)? 60-67 bpm
What effect does atropine have on Increases HR markedly
heart rate?
What is the sympathetic tone at rest? Minimal
What effect does propranolol have Decreases HR slightly
on heart rate?
What happens when atropine and Unmasks intrinsic HR (100 BPM)
propranolol are combined?
What is the state of autonomic tone No autonomic tone
at rest?
