HBS CFA: Unit 1 — Bones & Muscles

A short unit check. Enter your Student ID and answer each item. This is a growth check, not a grade.

1. 1. In anatomy, "proximal" means:

   ACloser to the point of attachment or trunkBFarther from the trunkCToward the backDToward the head

2. 2. The heart and lungs are housed mainly in the:

   AThoracic cavityBAbdominal cavityCCranial cavityDPelvic cavity

3. 3. Osteoblasts and osteoclasts have opposite jobs. Osteoblasts:

   ABuild new bone tissueBBreak down bone tissueCCarry oxygenDTransmit nerve signals

4. 4. In the sliding-filament model, muscle shortens when:

   AMyosin heads pull actin filaments toward the centerBActin and myosin filaments themselves shrinkCThe bone dissolvesDNerves grow longer

5. 5. An EMG sensor measures:

   AElectrical activity of musclesBBlood sugarCBone densityDBody temperature

6. 6. A good early rehabilitation goal after a joint injury is usually to:

   AGradually restore range of motion and strengthBImmediately lift maximum weightCAvoid all movement permanentlyDIgnore pain signals entirely

Enter your Student ID to submit.