The Defecation Reflex

question 23

Multiple Choice

The defecation reflex

• A)is initiated when mass movements force fecal material into the rectum, stimulating stretch receptors in the rectal wall
• B)involves relaxation of the internal anal sphincter
• C)involves contraction of the sigmoid colon and rectum
• D)can be overridden by voluntary contraction of the external anal sphincter
• E)has all of the above characteristics

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Definitions:

Shaping

A method in behavioral psychology where reinforces guide an organism's behavior towards a desired goal through successive approximations.

Successive Approximations

A behavioral training process that rewards actions that progressively more closely resemble the desired behavior.

Generalization

The tendency to respond in the same way to different but similar stimuli.

Discrimination

Unjust or prejudicial treatment of people based on characteristics such as race, age, sex, or disability.