It causes them to dilate not constrict.
Two examples are histamines and amphetamines.
Fear is an emotion "I fear you" Frighten is to cause someone to feel the emotion fear. "Do I frighten you?" = "Do I cause you to feel fear?" "Yes you frighten me" = "Yes, you cause me to feel fear"
High osmolarity or high Na+ and Cl- in the ascending loop of Henle will cause afferent arterioles to constrict by releasing adenosine. This response helps to reduce glomerular filtration rate to maintain a balance in the kidney's filtration processes.
When suddenly exposed to bright light, your pupils will automatically constrict (actually the constrictor muscles of the iris will contract, causing the iris to expand and narrow the pupil). Also, it is likely your eyelids will squint shut.
Constricting the pupils when light is shone in your eyes helps to reduce the amount of light entering the eye, thus preventing potential damage to the sensitive cells in the retina. It also helps to improve visual acuity by focusing the light on the center of the retina, increasing sharpness of vision.
no, uppers, acid & ecstacy will dialate your pupils. downers, like heroin and oxy's will constrict "pinpoint" your pupils
practise how to use tiny muscles in your eyes to constrict your pupils
No. It actually dilates them. Opiates (hydrocodone, heroin etc) constrict pupils.
They don't, narcotics make your pupils dilate.
No. It will constrict.
Yes, alcohol consumption can cause the pupils to constrict or become smaller. This is a normal physiological response to the depressant effects of alcohol on the central nervous system.
Pupils "constrict" when light enters, and "dilate "when the lighting dims
Suboxone causes ocular miosis or small pupils.
Listing them all would be time-consuming so lets put it this way. Drugs can cause a pupil to change in two ways by dilation making the pupil larger or constricting the pupils. Only two drugs constrict the pupils those being opiates and alcohol. So anything but, these can cause the pupils to dilate.
dilates them
Your pupils enlarge in dark light so more light comes in. They constrict in bright light to reduce the amount of light. They are affected by drugs. Many abused/illegal drugs causes the pupils to constrict. This is a neat exercise. Rub the short hairs on the back of your neck below your hairline. Your pupils will constrict and enlarge. It is not known why this occurs. There is a theory that when people lie, their pupils dilate.
On the contrary, my friend, they get quite large. Your eyes also tend to get bloodshot.