Question

muscles that help maintain posture are called __. for example, muscles of the back that stabilize the scapula during arm movements. question 4 (mandatory) (0.5 points) a muscles more movable attachment is called its whereas its fixed (or immovable) attachment is called the __. a) antagonists b) fixators c) prime movers d) synergists a) synergist, fixator b) origin, insertion c) insertion, origin d) fixator, synergist

Explanation:

1. In muscle - anatomy, the origin is the less - movable attachment and the insertion is the more - movable attachment.
2. Fixators are muscles that act to stabilize a body part during movement of another part, often playing a role in maintaining posture.

Answer:

1. For the first part: A muscle's more movable attachment is called its insertion, whereas its fixed (or immovable) attachment is called the origin. So the answer is B. origin, insertion.
2. For the second part: Muscles that help maintain posture and stabilize the scapula during arm movements are called fixators. So the answer is B. fixators.