AFAA - Group Fitness Instructor - Module 3 Exam Questions And Answers

What is defined as the simultaneous contraction of one muscle and the relaxation of its antagonist? ANS - Reciprocal inhibition Which of the following are sensory receptors responsible for sensing position in body tissues and are located in muscles, tendons, ligaments, and joint capsules of the human body? ANS - Mechanoreceptors Which of the following is true of the right ventricle? ANS - It sends deoxygenated blood to the lungs. Which of the following is a muscle that is commonly underactive in the LPHC? ANS - Hamstrings Which of the following sustains high-power activity without oxygen for up to 15 seconds? ANS - ATP-PC Which of the following is a function of a heart valve? ANS - It prevents backflow or spillage of blood back into the chambers. Which term refers to the arching of the lumbar spine and is associated with tight hip flexors, lengthened abdominals, and low-back pain? ANS - Lordosis Which of the following is an example of relaxation of the psoas so the glutes can contract? ANS - Reciprocal inhibition What is caused by a tight muscle decreasing the neural drive to its functional antagonist? ANS - Altered reciprocal inhibition Which of the following is a muscle that is commonly overactive in the foot and ankle? ANS - Soleus Which of the following is a small chamber located superiorly on either side of the heart that gathers blood returning to the heart? ANS - Atrium Which statement best describes anaerobic metabolism? ANS - Supports speed, power, and strength endurance training in short bouts What of the following is the actual process of moving air in and out of the body and requires optimal functioning of the respiratory pump and all its components? ANS - Ventilation Which statement best describes aerobic metabolism? ANS - Maintains high levels of ATP production for longer periods of time Which of the following is the best cue for proper alignment in the lower body to ensure knee safety? ANS - "Line your knee up with your second and third toes." Cardiac output is represented by which of the following formulas? ANS - SV x HR = Q Which of the following is a characteristic of synovial joints? ANS - They comprise approximately 80 percent of all the joints in the body and have high mobility. Which of the following is part of the cardiovascular system? ANS - Blood Which of the following simultaneously work together to provide the body with adequate oxygen and nutrients while removing waste products from the cells in the body? ANS - Cardiovascular and respiratory systems Which of the following nervous systems consist of the brain and the spinal cord with a primary function to coordinate activity in all parts of the body? ANS - Central Which of the following is a common overactive muscle of the head and neck? ANS - Levator scapulae Which of the following terms refers to vessels that transport blood from the capillaries toward the heart? ANS - Veins Which term refers to a conglomeration of billions of cells specifically designed to provide a communication network within the human body? ANS - Nervous system What are the two main divisions of the skeletal system called? ANS - Axial and appendicular What is made up of the upper and lower extremities as well as the shoulder and pelvic girdles and encompasses approximately 126 bones? ANS - Appendicular skeleton Which of the following is defined as the cumulative sensory input to the central nervous system from all mechanoreceptors that sense position and limb movements? ANS - Proprioception The synergistic action of muscle groups to produce movement around a joint is known as what? ANS - Force-couple Which of the following systems' primary role is to ensure proper cellular function? ANS - Respiratory system What is a specialized area of cardiac tissue, located in the right atrium of the heart, which initiates the electrical impulses that determine the heart rate? ANS - Sinoatrial (SA) node Which of the following are sensitive to change in tension of muscle and the rate of that change? ANS - Golgi tendon organs Which of the following consist of the first seven vertebrae starting at the top of the spinal column and provide support and motion for the head? ANS - Cervical vertebrae Which of the following is the functional unit of the nervous system that merges collectively to form nerves? ANS - Neuron Which of the following is a function of heart rate and stroke volume? ANS - Cardiac output Macronutrients include carbohydrates, proteins, and which of the following? ANS - Fats Which of the following is a high-energy molecule that stores energy to be used in cellular and mechanical work, including exercise? ANS - ATP