Unit 2 Exam NCSF-Questions and Answers

no joint movement The glenohumeral joint should experience no movement during arm exercises. Since the elbow is a hinge joint any shoulder movement would negate the focus from the triceps musculature. A common fault during triceps exercises is to combine elbow extension with shoulder extension. Many exercisers "cheat" using the lats to assist with momentum forces; seen when the humerus (upper arms) deviates backward and forward across the midaxillary line during the eccentric and concentric phases. - Answer ️️ -What is the correct movement of the glenohumeral joint during the tricep pushdown exercise? rectus femoris The quadriceps is comprised of four different muscles; the vastus lateralis, vastus medialis, vastus intermedius and rectus femoris. The rectus femoris is the only quadriceps muscle that crosses two joints - the hip and knee. The superior aspect of the rectus femoris originates at the pelvis, resulting in hip flexion when contracted. The inferior portion inserts on the patella via the quadriceps tendon causing knee extension. - Answer ️️ -What is the dual-action muscle of the quadriceps; allowing it to act upon both the hip and knee joints? lordotic A lordotic curve is the term used to describe the natural curvature of both the cervical spine (C1- C7) and the lumbar spine (L1-L5). A natural lordotic curve is essential for support and energy transfer. Excessive curvature is referred to as lordosis as seen during back hyperextension. A kyphotic curve is the term used to describe a convex curvature of the thoracic spine ( T1-T12).