Severe pain may lead to

safaTerkawi

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2022-08-10

Severe pain may lead to.

A fall in blood pressure due to a fall in vascular resistance in skeletal muscle.
A fall in heart rate due to an increase in cardiac vagal tone.
Vomiting through a reflex centre in the brainstem.
Profuse sweating due to activation of sympathetic nerves.
Suppression of cortisol secretion.

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safaTerkawi

2022-08-10

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A. True This lowers total peripheral resistance.

B. True Consciousness may be lost if this is combined with muscle vasodilation in the ‘vasovagal’ syndrome.

C. True The vomiting centre is in the medulla oblongata.

D. True Sympathetic cholinergic nerves are motor to sweat glands.

E. False Severe pain increases cortisol secretion via the hypothalamus as part of the general response to trauma.

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