What are the functional units of compact bone?

The osteon or haversian system /həˈvɜːr. ʒən/ (named for Clopton Havers) is the fundamental functional unit of much compact bone.

What is the basic unit of compact bone tissue?

The diagram above shows a transverse view of an osteon (Haversian system) – the basic unit of compact bone. The diagram above shows a longitudinal view of an osteon. Some, mostly older, compact bone is remodelled to form these Haversian systems (or osteons).

What is the functional unit of compact bone quizlet?

Osteon. The fundamental functional unit of most compact bone. Osteons are rough cylindrical structures that repeat and are typically several millimeters long and around 0.2mm in diameter. Consist of concentric lamellae arranged around a central canal.

Are the structural and functional units of compact bone?

Osteons: Osteons are the structural and functional units of compact bone tissue. They consist of osteocytes, calcified lamellae, canaliculi, lacunae, and a central canal where blood vessels and nervous tissue are located.

What are the functional units of bones called?

Osteon, the chief structural unit of compact (cortical) bone, consisting of concentric bone layers called lamellae, which surround a long hollow passageway, the Haversian canal (named for Clopton Havers, a 17th-century English physician).

What is a unit of bone called?

What is the functional unit of bone bracketed called?

The osteon is the functional unit of compact bone.

What is the functional unit of bone tissue?

STUDY. The Osteon.

What type of tissue covers the ends of long bones?

cartilage
Subchondral tissue. This is the smooth tissue at the ends of bones, which is covered with another type of tissue called cartilage. Cartilage is a specialized, rubbery connective tissue.

What are the small spaces in bone tissue that are holes in which osteocytes live called?

Between the rings of matrix, the bone cells (osteocytes) are located in spaces called lacunae. Small channels (canaliculi) radiate from the lacunae to the osteonic (haversian) canal to provide passageways through the hard matrix.

What are the basic units of compact bone?

The basic units of compact bone are called osteons or Haversian systems. These are cylinder-shaped structures that have a mineral matrix and are home to osteocytes (mature bone cells ) that are trapped in the matrix.

Where are the osteons located in compact bone?

Compact Bone Compact bone consists of closely packed osteons or haversian systems. The osteon consists of a central canal called the osteonic (haversian) canal, which is surrounded by concentric rings (lamellae) of matrix. Between the rings of matrix, the bone cells (osteocytes) are located in spaces called lacunae.

What’s the difference between compact bone and spongy bone?

B is correct. The main difference between compact and spongy (aka cortical and cancellous) bone is density. In compact bone, the functional units of osteons are very compact and highly organized. In spongy bone, the opposite is true, and the cells and bone material exist in a less compact matrix.

Where are the blood vessels located in compact bone?

Small channels ( canaliculi) radiate from the lacunae to the osteonic (haversian) canal to provide passageways through the hard matrix. In compact bone, the haversian systems are packed tightly together to form what appears to be a solid mass. The osteonic canals contain blood vessels that are parallel to the long axis of the bone.