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Diving reflex in a human baby The diving reflex , also known as the diving response and mammalian diving reflex , is a set of physiological responses to immersion that overrides the basic homeostatic reflexes , and is found in all air-breathing vertebrates studied to date.
The diving reflex is a response to immersion that overrides the basic homeostatic reflexes, and which is found in all air-breathing vertebrates. [ 6 ] [ 7 ] It optimizes respiration by preferentially distributing oxygen stores to the heart and brain which allows staying underwater for extended periods of time.
Diving project – The overall diving job by a diving contractor under a specific contract; Diving rebreather – Closed or semi-closed circuit scuba; Diving reflex – The physiological responses to immersion of air-breathing vertebrates; Diving regulations – Stipulations of the delegated legislation regarding the practice of underwater diving
Knee jerk or patellar reflex — a kick caused by striking the patellar tendon with a tendon hammer just below the patella, stimulating the L4 and L3 reflex arcs. Moro reflex , a primitive reflex — only in all infants up to 4 or 5 months of age: a sudden symmetric spreading of the arms, then unspreading and crying, caused by an unexpected ...
During the diving reflex, the infant's heart rate decreases by an average of 20%. [1] The glottis is spontaneously sealed off and the water entering the upper respiratory tract is diverted down the esophagus into the stomach. [6] The diving response has been shown to have an oxygen-conserving effect
1. Diving from a boat which is under way (not moored). The major implication is that the engines will be running and propellers or thrusters may be engaged while divers are in the water, a significant hazard. [66] 2. (offshore diving) Diving from a vessel underway, making way, but not using dynamic positioning.
The physiology of underwater diving is the physiological adaptations to diving of air-breathing vertebrates that have returned to the ocean from terrestrial lineages. They are a diverse group that include sea snakes , sea turtles , the marine iguana , saltwater crocodiles , penguins , pinnipeds , cetaceans , sea otters , manatees and dugongs .
Cave diving, wreck diving, ice diving and diving inside or under other natural or artificial underwater structures or enclosures are examples. The restriction on direct ascent increases the risk of diving under an overhead, and this is usually addressed by adaptations of procedures and use of equipment such as redundant breathing gas sources ...