A&P Unit 3 Flashcard Review

Front

What is the diaphysis of a long bone?

Back

The diaphysis is the long, tubular shaft of a long bone, primarily composed of compact bone and containing the medullary cavity.

Front

What is a transverse fracture?

Back

A transverse fracture is a type of bone fracture that occurs straight across the bone shaft.

Front

What is a spiral fracture?

Back

A spiral fracture is a type of fracture that occurs when a rotating force is applied to the bone, often seen in sports injuries.

Front

What is an osteocyte?

Back

An osteocyte is a mature bone cell that maintains bone tissue and is embedded within the bone matrix.

Front

What are the main components of a long bone?

Back

The main components of a long bone include the diaphysis, epiphyses, and medullary cavity.

Front

What is the function of the periosteum?

Back

The periosteum is a dense layer of vascular connective tissue that covers the outer surface of bones, providing protection and serving as an attachment point for muscles.

Front

What is the role of osteoblasts?

Back

Osteoblasts are bone-forming cells that synthesize and secrete the bone matrix.

Front

What is the role of osteoclasts?

Back

Osteoclasts are cells that break down bone tissue, playing a crucial role in bone remodeling.

Front

What is the epiphyseal line?

Back

The epiphyseal line is a remnant of the growth plate (epiphyseal plate) that indicates where bone growth occurred during development.

Front

What is the medullary cavity?

Back

The medullary cavity is the central cavity of a long bone that contains bone marrow.