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What is the opposite of constrict?
dilate
Can fear cause pupils to constrict?
It causes them to dilate not constrict.
What vessels cant constrict and dilate?
Capillaries
What is it called when a person's pupils no longer dilate from the light?
Pupils don't dilate from light, the constrict. They dilate in the dark, to take in more light, and constrict in the light so your eyes don't get damaged. Hallucinogenics, stimulants and alcohol and make your pupils dilate and opiates and diazepam can make them constrict. Im not sure what that's called though..
Why does the veins constrict and dilate during exercise?
Almost all the veins and arteries constrict and dilate during heavy exercise. Even capillaries bring a flush to the face and skin by dilation.
Does adrenaline constrict pupils of the eyes?
dilates them
Do capillaries constrict and dilate?
No. They are vessels composed of epithelial cells (endothelium) which contain no contractile material. However, at their site of origin they contain sphincters (precapillary sphincters) that controls the flow of blood that enters the capillaries.
Why do narcotics make pupils constrict?
They don't, narcotics make your pupils dilate.
What happens to both pupils when light enters?
Pupils "constrict" when light enters, and "dilate "when the lighting dims
Which type of bronchioles don't have cartilage?
Bronchioles don't have cartilage because they need to be able to constrict and dilate
High osmolarity or high Na plus and Cl- in the ascending loop of Henle will cause afferent arterioles to dilate or constrict by releasing?
Constrict by releasing a vasoconstrictor chemical, usually ATP
Does vicidon make your eyes dilate?
No -- rather the opposite. Most opiates, opioid and similar drugs constrict the pupil.
