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Feliz [49]
4 years ago
7

Cells in the human eye send nerve impulses to the brain that cause the pupil to constrict. this is an example of a reaction to w

hat kind of stimuli?
A.Chemicals
B.Light
C.Touch
D.Sound
Biology
2 answers:
4vir4ik [10]4 years ago
8 0
The answer is : LIGHT
hoa [83]4 years ago
7 0
A. chemicals, the constriction of the pupil are usually caused by opiates anti-hypertension drugs.
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1. Regulation of glucose blood levels is an example of negative feedback mechanism.

Negative feedback mechanism is a control mechanism involved in homeostasis maintain, in this case maintenance of glucose blood levels in normal range.

Negative feedback mechanism contains sensory system that detects the changes, control system that responds to change and activates mechanisms of effector system that reverse the changes in order to restore conditions to their normal levels.

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This tight regulation of pancreatic hormones is referred to as glucose homeostasis. Insulin lowers blood sugar and glucagon raises it.

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