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What is the opposite of constrict?
dilate
What vessels cant constrict and dilate?
Capillaries
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
Can fear cause pupils to constrict?
Yes, fear can cause pupils to constrict. When the body experiences fear, the sympathetic nervous system is activated, leading to the release of adrenaline. Adrenaline causes the pupils to constrict, allowing the individual to focus on a threat and react quickly.
Does vicidon make your eyes dilate?
No -- rather the opposite. Most opiates, opioid and similar drugs constrict the pupil.
What is it called when a person's pupils no longer dilate from the light?
It is called fixed or non-reactive pupils. This could be due to a variety of reasons such as medication, injury, or underlying medical conditions affecting the nerves that control pupil response. It is important to seek medical attention if pupils are fixed and not reacting to light.
What make blood vessels constrict and dilate?
Nothing, blood vessels are nothing because they wont harm you or anything like that.
What is the scientific name for a Brain Freeze?
The scientific term for brain freeze is sphenopalatine ganglioneuralgia. It is a brief headache that can occur when something cold touches the roof of your mouth, causing blood vessels to constrict and then rapidly dilate.
