Vetinerary Assistant Practice Exam

What is a trochanter?

1. a small muscle

2. an area of dense connective tissue

3. a lump or bump on the surface of a bone

4. a type of bone marrow

The correct answer is: a lump or bump on the surface of a bone

A trochanter is defined as a lump or bump on the surface of a bone, specifically referring to large, bony projections that serve as sites for muscle attachment. In veterinary anatomy, the most notable examples of trochanters are found on the femur, where the greater and lesser trochanters are critical for the attachment of muscles involved in leg movement and stability. These protrusions are essential for the biomechanics of an animal's locomotion, providing leverage for muscular actions. The other options refer to different anatomical structures. A small muscle would not be classified as a trochanter, nor is an area of dense connective tissue. Bone marrow is a soft tissue found within the cavities of bones and does not pertain to the definition of a trochanter. Understanding the function and role of trochanters in skeletal anatomy is vital for veterinary assistants, as they contribute to muscle and joint mechanics in animals.