Health Assessment For The Musculoskeletal System

The statement is true because the sternum, also known as the breastbone, is indeed composed of three parts. The manubrium is the uppermost part, located near the base of the neck. The body is the middle and largest part, which connects to the ribs. Lastly, the xiphoid process is the smallest and lowest part, positioned at the bottom of the sternum. Thus, the statement is correct.

Muscle fibers are indeed held together by connective tissues. Connective tissues, such as tendons and fascia, provide structural support and help to transmit forces generated by muscle contractions. These tissues also allow for the coordination and synchronization of muscle movements, ensuring efficient and smooth functioning of the muscles. Therefore, the statement "Muscle fibers are held together by connective tissues" is true.

Cartilage is a tough fibrous substance that fills the space between joints and acts as shock absorbers. It provides support and cushioning to the bones, allowing for smooth movement and reducing friction between the joints. Unlike bones, cartilage is flexible and elastic, making it ideal for its role in the body. It is found in various parts of the body such as the nose, ears, and joints.

Atrophy refers to the loss of muscle mass and strength. It occurs when muscles are not used or exercised regularly, leading to a decrease in muscle size and function. This can happen due to various reasons such as lack of physical activity, aging, or certain medical conditions. Atrophy can result in weakness, decreased mobility, and difficulties in performing everyday tasks. Regular exercise and physical therapy are often recommended to prevent or reverse muscle atrophy.

The fibula is not the largest and heaviest bone in the body. It is actually the smaller of the two bones in the lower leg, with the tibia being the larger and heavier bone. The fibula runs parallel to the tibia and is mainly responsible for providing support and stability to the leg, rather than bearing a significant amount of weight.

Tendons are strong bands of fibrous tissue that connect bones to each other. They are not a tough fibrous substance that fills the space between joints, an involuntary muscle that forms the heart, or a connective tissue that attaches bone to skeletal muscle. Tendons specifically serve to attach muscles to bones, allowing for movement and providing stability to the skeletal system.

Fracture is the medical term for any "break" on or in the hard part of the bone.

Ligaments are strong bands of fibrous tissue that connect bones to each other. They provide stability to joints and help to limit excessive movement, preventing dislocation or injury. Unlike tendons, which connect muscles to bones, ligaments do not contract or relax to generate movement. Instead, they play a crucial role in maintaining the structural integrity of the skeletal system by holding bones in place and allowing controlled movement.

Smooth muscle is actually responsible for involuntary movements in our bodies, not voluntary movements. Voluntary movements are controlled by skeletal muscles. Smooth muscle is found in the walls of organs and blood vessels and is responsible for functions such as digestion, blood flow regulation, and control of bladder function.

The brachioradialis muscle is actually located in the forearm, not between the elbow and the shoulder. It is a long muscle that runs along the forearm and helps with flexing the elbow joint. Therefore, the statement that the brachioradialis muscle is located between the elbow and the shoulder is false.

The correct answer is "cardiac" or "cardiac muscle". The heart is made up of cardiac muscle, which is a specialized type of muscle tissue. This muscle is responsible for the rhythmic contractions and relaxations that allow the heart to beat and pump blood throughout the body. It is unique to the heart and different from skeletal or smooth muscle found in other parts of the body.

The skeletal muscle is the only voluntary muscle associated with the skeletal system. This is because the skeletal muscle is attached to the bones and is responsible for the movement of the body. Unlike other types of muscles, such as smooth muscles or cardiac muscles, the skeletal muscle is under conscious control, meaning that we can choose to contract or relax these muscles at will. This allows us to perform various movements, such as walking, running, or lifting objects.

Osteoporosis is a condition characterized by weak and brittle bones, not by gnarled fingers and visibly swollen joints. The symptoms of osteoporosis typically include back pain, loss of height, and a stooped posture. Swollen joints and gnarled fingers are more commonly associated with conditions like rheumatoid arthritis or osteoarthritis. Therefore, the statement that a person with osteoporosis usually develops gnarled fingers and visibly swollen joints is incorrect.

The statement is true because hands have 27 bones, while feet have 26 bones. Therefore, feet have one less bone than hands.

The patella, also known as the kneecap, is a small bone that is located at the end of the femur. It acts as a protective covering for the knee joint and helps to distribute forces evenly across the joint during movement. The patella also plays a crucial role in the extension of the leg and provides leverage to the quadriceps muscles.

Duchenne's Muscular Dystrophy is a genetic disorder that primarily affects boys. It is characterized by progressive muscle weakness and degeneration. Most individuals with Duchenne's Muscular Dystrophy do not survive beyond their late teens or early twenties. Therefore, the correct answer is 20, indicating that death usually occurs around this age due to complications related to the disease.

The statement is false because the 'big toe' is actually made up of two phalanges called the proximal and distal phalanx, not two phalanges.

The human body consists of approximately 700 muscles. Muscles are responsible for various functions such as movement, stability, and heat production. They are made up of muscle fibers and are attached to bones by tendons. These muscles allow us to perform voluntary movements such as walking, running, and lifting objects. Additionally, muscles in our body also help in maintaining posture and providing support to our skeletal system. Overall, the human body contains around 700 muscles that play a crucial role in our daily activities.

A typical long bone consists of five basic parts, including the blood vessels, the spongy bone, the marrow cavity, yellow marrow, and the hard bone. The hard bone refers to the dense outer layer of the bone, also known as compact bone. This layer provides strength and support to the bone, protecting the inner structures and allowing for movement and weight-bearing.

Myasthenia gravis is a disorder that is characterized by interrupted nerve impulses from the brain, leading to muscle weakness. This condition occurs when there is a breakdown in communication between the nerves and muscles, resulting in fatigue and weakness in the affected muscles. The interruption of nerve impulses can cause difficulty in controlling voluntary muscles, such as those used for movement and breathing. Myasthenia gravis is an autoimmune disorder, meaning that the body's immune system mistakenly attacks its own tissues, in this case, the receptors on the muscles responsible for receiving nerve signals.