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Physiology General 3ee0a3e0

Which of the following statements about vasomotor centre (VMC) of medulla is true

A
Independent of coicohypothlamic inputs
B
Influenced by baroceptor signals but not by chemoreceptors
C
Acts along with the cardiovagal centre (CVC) to maintain Blood pressure.
D
Essentially Silent in sleep
High-Yield Explanation
C i.e. Acts along with the cardiovagal centre (CVC) to maintain Blood pressure.- Vasomotor centre (VMC) controlling sympathetic outflow acts along with cardiovagal centre (CVC) controlling parasympathetic out flow to maintain blood pressureQ.- Baroreceptors, chemoreceptors and coicohypothalmic inputs influence VMCQ.- Baroreceptors are tonically active stretch receptors located in walls of aoic arch & carotid sinus. Discharge from baroreceptors cause inhibition of C/ neurons of vasomotor center (VMC) situated in upper (rostral) half of ventrolateral mdullaQ and facilitation of cardiovagal centre (CVC) or nucleus ambiguous.

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