CSCS Practice Exam questions with correct answers

Each muscle fiber is surrounded by a connective tissue called? Answer Endomysium What is released from the sarcoplasmic reticulum into the myofibril, causing tension development in a muscle? Answer Calcium ions that bind to troponin What type of muscular contraction occurs in the pectoralis major during the slow, controlled, downward phase of a bench press? Answer Eccentric What is the thick structural protein inside the sarcomere? Answer Myosin A muscle fiber that is small in diameter has a slow contraction speed, and a high capillary density would be classified as? Answer Type I Through which of the following valves does blood flow after contraction of the right atrium? Answer Tricupsid During a typical electrocardiogram, atrial depolarization is represented by? Answer P-wave While reading an ECG, electrical potential that depolarizes the ventricles is represented by? Answer QRS complex What blood vessel functions to exchange oxygen, fluid,