Free AFAA Practice Test
1. The joint movement that results in an increase of the joint angle is called:
2. All of the following are bones of the glenohumeral joint EXCEPT the:
D. Glenoid Labrum Cavity
3. Which of the following should be considered a life-threatening medical emergency?
A. Anterior cruciate ligament tear
B. A dislocation of the cervical spinal cord
C. An Achilles' tendon ruptures
D. A hip fracture in an elderly individual
4. Which of the following can cause pain in the lumbar area?
A. Strain of the tibialis anterior muscle
B. Strain of the longissimus thoracis muscle
C. Strain of the gastrocnemius muscle
D. Strain of the sternocleidomastoid muscle
5. When working with a trainer, an individual lifts a 10-pound weight straight over her head through a distance of 2.5 feet. How much linear work has been generated?
A. 4 pound-feet
B. 7.5 pound-feet
C. 25 pound-feet
D. 50 pound-feet
Answers & Explanation
1. C: When a joint is extended, the angle of the joint is increased. Flexion is the opposite of extension, and causes the joint angle to decrease. Abduction refers to movement that is directed away from the midline of the body. The opposite of abduction is adduction. Adduction describes movements that are made toward the midline of the body.
2. A: The glenohumeral joint is also known as the shoulder joint. This joint is comprised of the following two bones: the scapula, and the humerus. The ulna and radius are the two bones that make up the forearm. The shoulder joint has a high degree of mobility. Among other movements, it can abduct, adduct, rotate internally, and rotate externally. However, this ability to move in many ways also makes the shoulder joint unstable and prone to injury.
3. B: Any trauma to the neck (or cervical spine) should be considered a medical emergency. When the cervical vertebrae are dislocated or fractured, the spinal column can become unstable. This can potentially lead to paralysis or death. While an Achilles' tendon rupture or anterior cruciate ligament tear is a serious leg/knee injury, respectively, and may be career ending for athletes, either one is not life threatening. A hip fracture or a fracture of the neck of the femur can cause permanent disability, especially in the elderly. However, these are also not usually life threatening.
4. B: The longissimus thoracis muscle is located in the posterior lumbar region. It is part of the erector spinae group. These muscles help maintain posture and provide stability to the spine. Lumbar pain, also called low back pain, is one of the most common causes of disability. About 60 to 80% of the general population will experience it at some point in their lives. Determining the specific cause of lumbar pain may be difficult, but muscle strain, an intervertebral herniated disc, and joint inflammation can all cause lumbar pain. The other muscles are not located in the lumbar region. The sternocleidomastoid muscle is located in the cervical region. Strain to this muscle occurs with "whiplash" injuries. The tibialis anterior muscle is located on the anterior and lateral part of the lower leg. The gastrocnemius muscle is located on the posterior part of the lower leg.
5. C: Multiplying the force times the distance through which the force travels will result in the linear work generated. Ten times 2.5 equals 25.
Last Updated: 03/01/2017