Back to the full dot-point answer
WAPhysical EducationQuick questions
Unit 3: Factors Affecting Performance
Quick questions on Functional anatomy: WACE Year 12 Physical Education Studies Unit 3
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is muscle roles in a movement?Show answer
For any movement, classify each muscle by its role. The agonist (prime mover) is the muscle that contracts to produce the movement. The antagonist is the opposing muscle that relaxes and lengthens to allow it. Synergists assist the agonist or stabilise the joint, and fixators hold a body part still so the agonist has a firm base to pull from.
What is types of muscle contraction?Show answer
Name the contraction type by what the muscle length does. In a concentric contraction the muscle shortens while developing tension, for example the quadriceps during the upward drive of a jump. In an eccentric contraction the muscle lengthens under tension, controlling a load, for example the quadriceps absorbing impact on landing. In an isometric contraction the muscle develops tension without changing length, for example the core muscles holding a plank or a rugby player holding a scrum bind.
What are lever systems?Show answer
A lever has a fulcrum (the joint), an effort (the muscle force), a resistance (the load or body weight) and two lever arms. The three classes differ by the order of these components.
Have a question we have not covered?
This dot-point answer is short enough that we have not extracted many short questions yet. Read the full dot-point answer or ask Mo, our study assistant, in the chat for follow ups.