Which of the Following Defines a Motor Unit

question 1

Multiple Choice

Which of the following defines a motor unit?

• A) one actin binding site and its myosin partner
• B) one sarcomere and all of its actin and myosin filaments
• C) one myofibril and all of its sarcomeres
• D) one motor neuron and all of the muscle fibers it controls

---

Definitions:

Kindred

A group of individuals related by blood, marriage, or adoption; often used to describe familial connections or ancestry.

Stratified Societies

Societies organized into hierarchies or classes based on factors such as wealth, ancestry, or occupation, often leading to unequal access to resources and power.

Social Mobility

The movement of individuals, families, or groups through a system of social hierarchy or stratification.

Test-tube Method

A technique often associated with laboratory experiments or procedures conducted in vitro, such as the cultivation of microorganisms or cells in a test-tube.