The "Exposure" (I

question 59

Multiple Choice

The "exposure" (i.e. the regression coefficient beta) is:

• A)-25,000
• B)2,5000
• C)-2,500
• D)none of the above

---

Definitions:

Z Disk

A structure within striated muscle fibers that anchors the actin filaments, serving as the boundary between sarcomeres.

Sarcomere

The fundamental unit of muscle fiber responsible for muscle contraction, defined by the area between two Z lines in striated muscle cells.

Actin Myofilament

A protein filament that, along with myosin, plays a role in muscle contraction and cell movement.

Z Disk

A structure within the sarcomere of muscle fibers that serves as the attachment site for actin filaments, marking the boundary between sarcomeres.