Welcome to the Quiz!
This quiz contains 8 questions from a mix of 1 subtopics.
Which system allows the heart rate to adapt swiftly to the body's changing needs?
digestive system
respiratory system
endocrine system
autonomic nervous system
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Which part of the brain acts as the main control centre for regulating heart rate?
pons
hypothalamus
medulla oblongata
cerebellum
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Where are the baroreceptors located that detect blood pressure and communicate this to the medulla oblongata?
vena cava
renal arteries
pulmonary arteries
carotid arteries and aorta
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What type of receptor detects changes in chemical composition of the blood?
chemoreceptors
baroreceptors
thermoreceptors
photoreceptors
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Which receptors detect changes in blood pressure?
chemoreceptors
baroreceptors
thermoreceptors
nociceptors
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What is the effect on the sinoatrial node when blood pressure is high?
complete cessation of electrical activity
decreased electrical activity
increased electrical activity
no change in electrical activity
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How does low oxygen, high carbon dioxide, or low pH levels affect heart rate?
causes the heart rate to slow down
stops the heart completely
causes the heart rate to speed up
causes no change in heart rate
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High oxygen, low carbon dioxide, or high pH levels cause which autonomic pathway to be activated?
enteric
somatic
parasympathetic
sympathetic
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