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Homeostasis :)
The Diving Reflex makes your body need a bit less air so you can stay under water for a longer time. It's a mammal trait more effective in sea animals than humans and is triggered when water under 21 °C (70 °F) comes in contact with the face.
The value of a reflex action is to survive. For example, if we place our hands on a hot oven. Our reflex would be to take our hand off and register the pain. OR A perfect example would be the rooting reflex. Which helps a breastfed infant find the mother's nipple. Babies display it only when hungry and touched by another person, not when they touch themselves.
The Pupillary Light Reflex and the Corneal Reflex (or Blink Reflex) are two important reflexes because the Light Reflex prevents damage to eye compopents related to over exposure to light and also helps the eye to accommodate visually, when there is less light; The Blink Reflex prevents objects from entering the eye and lubricates the eye. Also, breathing and heart beat are thought to be reflex actions.
The pathway that an impulse travels from your foot back to your leg is an example of a reflex arc. A reflex arc includes a sensory receptor (in this case, a receptor in your toe), sensory neuron, motor neuron, and effector (leg muscle). Some reflex arcs include interneurons. In other reflex arcs, a sensory neuron communicates directly with a motor neuron.
Homeostasis :)
Mammalian diving reflex
What you are experiencing is known as the Mammalian Diving Reflex. An adaptation of the human body to allow us to better function and hold our breath for a longer time when diving underwater.
knee jerk aka patellar reflex is an example of a stretch reflex
knee-jerk reflex
a reflex ia an example of an instinctive response
Patellar reflex is an involuntary, deep tendon and myotatic reflex
Reflex
Stretch reflex that helps keep your knees from buckling
knee jerk aka patellar reflex is an example of a stretch reflex
may be, but not always.
Reflex