The Circular Muscle of the Iris

question 135

Multiple Choice

The circular muscle of the iris

• A) contracts in response to bright light to produce pupillary constriction.
• B) is innervated by the parasympathetic nervous system.
• C) contracts to slacken the suspensory ligaments and increase the strength of the lens during accommodation.
• D) both (a) and (b) above.
• E) all of these answers.

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Definitions:

Cooperate

To work or act together towards a common goal or benefit, often seen in contexts of game theory, business, and social interactions.

Defect

An imperfection or shortcoming in a product, system, or process that detracts from its intended function or performance.

Payoff

The return or profit gained from an investment or decision.

Prisoner's Dilemma

A theoretical framework in game theory illustrating that two rational individuals might not cooperate, even if it appears that it is in their best interest to do so.