You Are Seated at a Small Table Talking to a Friend

question 124

Multiple Choice

You are seated at a small table talking to a friend opposite you who is drinking coffee.As she lifts the cup off the saucer and raises it to her mouth,the image made on your retina by the bottom of the cup actually changes shape,but you still "see" it as round due to:

• A)good continuation.
• B)movement parallax.
• C)perceptual constancy.
• D)proximity.

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Definitions:

Motor Units

A single motor neuron and all the muscle fibers it innervates, functioning as a single unit.

Sarcomere

The basic structural and functional unit of muscle fiber, responsible for muscle contraction.

Peak Contraction

The moment during a muscle exercise when the muscle is fully contracted, offering maximum tension.

H Zone

A region within the sarcomere of striated muscle fibers that becomes narrower during muscle contraction.