Aorta and foramen magnum
The lumen is the size of the inside of the blood vessel. The type of blood vessel that has a lumen approximately the same diameter as a single red blood cell is a capillary.
Lumen and candlepower are not the same thing. Lumen measure the of light surrounds, like you would light a room with a lamp. Candlepower measures the light in a beam, like a flashlight beam. With a few assumptions you can convert lumen to candlepower. With these assumptions 360 lumen would be 28.6 candlepower.
because lumen carries biochemical processes for the cells.
Which of the following needles has the widest lumen?
This question is ill posed. Lumen is a unit of measure for how much light comes from the lamp Watt is a unit of measure for how much energy is used by the lamp If the question were; "Which is brighter, a 2000 lumen bulb or a 1500 lumen bulb?" then the answer would be: The 2000 lumen bulb. I think the relation ship between lumen and watt is something like: Incandecent bulbs are 15w/lumen Flourecent bulbs use 40w/lumen LED bulbs are 70w/lumen The way to show the watt and lumen relationship is usually lumens (amount of light) per watt (energy consumption). This is like gas in your car (Miles or KM per Gallon or Liter). Incandescent bulbs have a maximum luminosity of 52 lumens/watt. Fluorescent bulbs range from 46 lumens/watt (CFL) to 100 lumens/watt (T5 and T8 tubes) LED bulbs range from 29 lumens/watt (older, low efficiency) to 100+ (XCree) and they are getting better.
The aorta is the blood vessel with the widest lumen. In contrast, capillaries are the blood vessels with the narrowest lumen.
called lumen
Lumen
The lumen is the size of the inside of the blood vessel. The type of blood vessel that has a lumen approximately the same diameter as a single red blood cell is a capillary.
Lumen
The lumen is the space within the blood vessel (or within any tubular structure).
lumen?
The lumen is the inner open space or cavity of a tubular organ, such as a blood vessel or an intestine
Lumen
lumen
lumen - the central opening within a tube or hollow organ.
the lumen