Webmotor unit. A single neuron and all of the muscle fibers it stimulates. troponin. A protein that binds calcium during muscle contraction. sarcoplasmic reticulum. The organelle that … WebA. When the arm flexes (bends upward), which muscle contracts? B. Which muscle relaxes when the arm flexes? C. When the arm extends (straightens), which muscle contracts? D. Which muscle relaxes when the arm extends? E. Why do muscles work in pairs? Observe: Click on the biceps to see a close-up of the muscle. A. What is the …
Agonist and antagonist muscle pairs - Muscular system - OCR
WebDec 27, 2024 · Arm muscles. The (upper) arm muscles are a group of five muscles located in the region between the shoulder and elbow joints. They are divided into two distinct compartments of the arm. The anterior … WebFeb 12, 2004 · When your biceps muscle in your upper arm contracts, it pulls your lower arm in towards your shoulder. However, when it relaxes, your biceps cannot push your … uofsc class waiver
What Is the Triceps Muscle Doing During a Biceps Curl?
WebJun 7, 2024 · Acting as the agonist from the anatomical position, the biceps brachii muscle flexes the arm at the elbow, pulling the forearm and hand toward the body. The triceps … WebApr 29, 2024 · Because it supplies the main force in flexing the arm, the biceps is referred to as the agonist muscle. The triceps, acting in opposition, is called the antagonist. Because the two muscles are … WebStudy with Quizlet and memorize flashcards containing terms like Biceps brachii, Brachialis, Triceps brachii and more. recover lost photos from hard drive