CO Anatomy, Biomechanics & Pathophysiology of the Musculoskeletal System

Question 1

Which bone is classified as part of the axial skeleton?

Accepted Answer

Vertebra

Answer

The axial skeleton forms the central axis of the body and includes the skull, vertebral column (spine), and thoracic cage (ribs and sternum). Vertebrae are the individual bones that make up the vertebral column, providing support and protecting the spinal cord, thus classifying them as part of the axial skeleton.

Question 2

What is the primary function of synovial fluid in joints?

Accepted Answer

Lubricates and nourishes joints

Answer

Synovial fluid is a viscous fluid found in the cavities of synovial joints. Its primary functions are to reduce friction between the articular cartilages during movement, acting as a lubricant, and to provide nutrients to the avascular articular cartilage, ensuring joint health and smooth motion.

Question 3

Which type of muscle contraction results in no change in muscle length?

Accepted Answer

Isometric

Answer

An isometric contraction occurs when a muscle generates force without changing its length. This happens when the muscle attempts to move an immovable object or stabilize a joint, where the tension increases but the muscle fibers do not shorten or lengthen.

Question 4

Which structure connects muscle to bone?

Accepted Answer

Tendon

Answer

Tendons are strong, fibrous connective tissues that serve as the attachment points between muscles and bones. They transmit the force generated by muscle contraction to the bones, enabling movement across joints.

Question 5

Which condition is characterized by inflammation of a joint?

Accepted Answer

Arthritis

Answer

Arthritis is a general term that refers to inflammation of one or more joints. It encompasses over 100 different conditions, all characterized by symptoms such as joint pain, swelling, stiffness, and reduced range of motion, which are direct results of joint inflammation.

(CO) Certified Orthotics Specialist Practice Test

(CO) Certified Orthotics Specialist Practice Test

CO Anatomy, Biomechanics & Pathophysiology of the Musculoskeletal System