COF Human Anatomy & Physiology

Question 1

What is the primary function of the skeletal system?

Accepted Answer

Support and protect the body

Answer

The skeletal system's primary function is to provide structural support for the body, giving it shape and maintaining posture. It also serves to protect vital internal organs, such as the brain, heart, and lungs, from external damage. Additionally, it acts as a framework for muscles to attach, enabling movement.

Question 2

Which bone is part of the upper limb?

Accepted Answer

Humerus

Answer

The humerus is the long bone located in the upper arm, extending from the shoulder to the elbow. It is a key component of the upper limb, connecting the shoulder blade (scapula) to the forearm bones (radius and ulna). In contrast, the femur, tibia, and fibula are bones of the lower limb.

Question 3

Which type of muscle is under voluntary control?

Accepted Answer

Skeletal muscle

Answer

Skeletal muscles are unique because they are under voluntary control, meaning their movement can be consciously directed by an individual. These muscles are typically attached to bones by tendons and are responsible for all intentional body movements, such as walking, lifting, and speaking. Cardiac and smooth muscles, conversely, operate involuntarily.

Question 4

What is the function of synovial fluid?

Accepted Answer

Lubricate joints

Answer

Synovial fluid is a viscous, egg-white-like fluid found in the cavities of synovial joints, such as the knee and shoulder. Its primary function is to lubricate the joint surfaces, reducing friction between the articular cartilages during movement. This lubrication allows for smooth, pain-free motion and nourishes the cartilage.

Question 5

Which system works closely with the muscular system to produce movement?

Accepted Answer

Skeletal system

Answer

The muscular system and the skeletal system work in close conjunction to produce movement. Muscles contract and pull on bones, which act as levers, to create motion at the joints. This integrated system, known as the musculoskeletal system, is essential for locomotion, posture, and various bodily functions.

(COF) Certified Orthotic Fitter Practice Test

(COF) Certified Orthotic Fitter Practice Test

COF Human Anatomy & Physiology