solved Anatomy and Physiology Discussion Questions:This assignment must be in APA

Anatomy and Physiology Discussion Questions:This assignment must be in APA format: Times Roman 12 font, double spaced, and include title and reference page.The assignment must be in paragraph form using complete sentences and avoiding bullet points and numbered list.Use a Level 1 heading to separate your sections (Page 62 of the APA Publication Manual).At least one outside source must be referenced and cited in the paper (resources MUST be peer-reviewed from the last 5 years)Minimum 100 words per question.1. Of the five metacarpal bones that form the framework of the hand, the thumb metacarpal forms the most freely movable joint with the carpals. Explain the significance of this anatomical structure.2. The elbow, the joint between the bodies of vertebrae, and the root of a tooth in the jaw are all joints given different functional names. What are these names and what characteristic distinguishes them from one another3. When the biceps brachii contracts, the elbow flexes. When the triceps brachii contracts, the elbow extends. Explain the role of both muscles in terms of agonist and antagonist in both of these movements