ACE Anatomy & Biomechanics Flashcards
6 cards from real ACE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 ACE Anatomy & Biomechanics flashcards as text
Which muscle is the primary stabilizer of the lumbar spine and is often targeted with core stability exercises in group fitness?
Answer: Transverse abdominis
The transverse abdominis is the deepest abdominal muscle that acts like a corset to stabilize the lumbar spine before limb movement occurs.
What is the term for the phase of a muscle contraction in which the muscle lengthens while under tension?
Answer: Eccentric contraction
An eccentric contraction occurs when a muscle produces force while lengthening, such as lowering a weight under control.
During a lunge, which muscle group performs a concentric contraction to return the participant to the starting position?
Answer: Quadriceps and gluteus maximus
The quadriceps extend the knee and the gluteus maximus extends the hip concentrically to propel the body back to the upright starting position.
What anatomical structure connects muscle to bone and transmits muscular force to produce joint movement?
Answer: Tendon
Tendons are dense connective tissue structures that attach muscle to bone, transmitting the contractile force to create skeletal movement.
Which of the following best describes pronation of the forearm?
Answer: Rotating the forearm so the palm faces downward
Forearm pronation is the rotational movement that turns the palm from facing up to facing down.
What is the kinetic chain concept, and why is it important for group fitness instruction?
Answer: It describes how forces and movements are transmitted through interconnected body segments
The kinetic chain concept recognizes that the body's segments are interconnected, so dysfunction or instability in one area can affect movement quality and injury risk throughout the chain.