PHYSIOLOGY
CENTRAL NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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TRUE
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FALSE
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Either A or B
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None of the above
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Detailed explanation-1: -The brain stem sits beneath your cerebrum in front of your cerebellum. It connects the brain to the spinal cord and controls automatic functions such as breathing, digestion, heart rate and blood pressure.
Detailed explanation-2: -Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). The sympathetic nervous system (SNS) releases the hormones (catecholamines-epinephrine and norepinephrine) to accelerate the heart rate.
Detailed explanation-3: -Final answer: The brain is responsible for thinking, heartbeat regulation, and maintaining body balance.
Detailed explanation-4: -This means that your heart will need to beat faster and with more force, in order to pump more oxygen-rich blood to your muscles. We can’t consciously increase the speed or strength of our heartbeat, so this is where the subconscious part of our nervous system – known as the autonomic nervous system – is in control.