FFA Veterinary Science CDE Practice Test

Which part of the body includes smooth, skeletal, and cardiac varieties and is fundamental to the musculoskeletal system?

1. Skin And Skin Types

2. Lymph Nodes, Tonsils, Thymus, And Spleen

3. Heart And Blood Vessels

4. Bones And Muscles

The correct answer is: Bones And Muscles

The correct answer pertains to the bones and muscles, which are essential components of the musculoskeletal system. This system is responsible for movement, stability, and protection of vital organs. Skeletal muscle, which is the type of muscle that is attached to the bones, allows for voluntary movement, enabling activities like walking and lifting. Smooth muscle is found in the walls of internal organs and is responsible for involuntary movements, such as digestion and the regulation of blood flow. Cardiac muscle is unique to the heart and is responsible for pumping blood throughout the body. Together, these muscle types, alongside bones, enable the body to perform a wide range of functions essential for survival and daily activity. The other options, although important in their respective contexts, do not directly relate to the musculoskeletal system in the same comprehensive manner.