Mammalian diving reflex

The mammalian diving reflex occurs when vertebrates put their face into water. Breathing stops, the heart rate drops and peripheral vasoconstriction occurs to maintain arterial blood pressure and conserve oxygen and energy. This reflex is mediated by branches of the trigeminal nerve from the nose to the spinal trigeminal nucleus in the brainstem. Links to the ventral respiratory group, the nucleus ambiguus and the rostral ventrolateral medulla drive parasympathetic and sympathetic output to adjust the cardiovascular system, and stop moving the muscles of respiration.
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[@linjoy9627]

I can't even stand puting my face under the shower! let alone in cold water! Sam Webster your a brave man. You also make incredible videos. Thank You

[@parvathyrnair5707]

A video particularly about ossification will be so helpful . Thank you for the great videos they make things a whole lot easier.

[@peterzuehlke]

thanks for all the great videos. as a sailor I really liked this one ;-)

[@gracedupreez537]

Good morning Doctor please can tell me why my chest bones are standing out it fell very hard please can u help me I have a hiatus hernia and I get a lot of aid I need help I have been many Dr hear in South Africa and they said there isn't anything they can do for me we are in South Africa and really I don't know what to do I watch all your videos please I need same advice. Thank you for your kindness God bless you and your family and stay safe safe than you again.

[@Mehraj052]

Reflex series getting interesting with every passing week. Thank you so much sir for this incredible series.

[@432hzPopMusic]

Thank you for all the great videos you make!

[@Mcfreddo]

Absolutely!

[@alisalehi-w2i]

You are standing at the true side of history!

[@زاهية-ف8ب]

Another great video to watch ❤

[@deemc7756]

😮

[@guillermogrohreigemborg6659]

Gatillo de trigémino