no photoreceptors · All Facts

no photoreceptors
Each eye has a blind spot where the optic disc has no photoreceptors.
SrcNCBI Neuroscience

Next evidence →3.47 mm per monthFingernails grow about 3.47 mm per month — over twice as fast as toenails at 1.62 mm.

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120 daysHealthy red blood cells circulate for up to about 120 days before the spleen and liver clear them.
red blood cellsThe spleen filters blood in its red pulp — trapping and recycling aging or damaged red blood cells.
2–3 million red blood cells every secondBone marrow releases about 2–3 million red blood cells every second into circulation.
hiccupsThe diaphragm is the main muscle of breathing — and sudden spasms of it cause hiccups.

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