2024 NSCA CSCS Chapter 4 Study Guide With 100% Verified Answers
- What type of joint is the knee joint?
Answer: Synovial
- What is the definition of power?
Answer: (Force) * (Velocity)
- To compare performances of Olympic weightlifters of different body weights,
the classic formula divides the load lifted by the athlete's:
Answer: Body weight to the two-thirds power
- During a free weight exercise, muscle force varies with which of the fol- lowing?
Answer: Perpendicular distance from the weight to the body joint and movement
acceleration
- A vertical jump involves knee, hip, and shoulder movement primarily in what
anatomical plane?
Answer: Sagittal
- An athlete is performing a concentric isokinetic elbow flexion and extension
exercise. Which types of levers occur at the elbow during this exercise?
Answer: - First-class and Third-class
- Anatomy
Answer: Encompasses the study of components that make up the muscu- loskeletal
"machine"
- Biomechanics
Answer: Focuses on the mechanisms through which these components interact to
create movement.
- Axial Skeleton
Answer: Consists of the skull (cranium), vertebral column (vertebra C1 through the coccyx), ribs, and sternum.
- Appendicular Skeleton
Answer: includes the shoulder (or pectoral) girdle (left and right scapula and
clavicle); bones of the arms, wrists, and hands (left and right humerus, radius, ulna, carpals, metacarpals, and phalanges); the pelvic girdle (left and right coxal or 1 / 2
innominate bones); and the bones of the legs, ankles, and feet (left and right femur, patella, tibia, fibula, tarsals, metatarsals, and phalanges.
- Joints
Answer: Junctions of bones
- Fibrous Joints
Answer: Allow virtually no movement (ex: sutures of the skull)
- Cartilaginous Joints
Answer: Allow limited movement (ex: intervertebral disks)
- Synovial Joints
Answer: Allow considerable movement (ex: elbow and knee)
- Hyaline Cartilage
Answer: Articulating bone ends are covered with this.
- Synovial Fluid
Answer: Entire joint is enclosed in a capsule filled with this
- Uniaxial Joints
Answer: Operate as hinges, essentially rotating about only one axis.
- Why is the knee not considered a hinge joint?
Answer: It's axis of rotation actually changes throughout the joint range of motion.
- Biaxial Joints
Answer: Allow movement about two perpendicular axes.
- What is considered a biaxial joint?
Answer: Ankle and Wrist
- What is considered a uniaxial joint?
Answer: Elbow
- Multiaxial Joints
Answer: Allow movement about all three perpendicular axes that define space.
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