What type of bone surrounds the medullary cavity?
spongy bone
Located in the main shaft of a long bone (diaphysis) (consisting mostly of compact bone), the medullary cavity has walls composed of spongy bone (cancellous bone) and is lined with a thin, vascular membrane (endosteum)….
| Medullary Cavity | |
|---|---|
| TA2 | 386 |
| FMA | 83698 |
| Anatomical terminology |
What tissue is found in the medullary cavity of a long bone?
Bone marrow
Bone marrow is the soft, spongy tissue that is located in the medullary cavities (centers) of certain large bones. Healthy bone marrow is an essential part of the body, as it contains stem cells that produce blood cells and the cells that make up the immune system.
What type of tissue surrounds the long bone?
periosteum
The outside of the bone consists of a layer of connective tissue called the periosteum. The outer shell of the long bone is compact bone, below which lies a deeper layer of cancellous bone (spongy bone), as shown in the following figure.
How the medullary cavity of a long bone forms?
After spongy bone is formed in the diaphysis, osteoclasts break down the newly formed bone to open up the medullary cavity. The cartilage in the epiphyses continues to grow so the developing bone increases in length. Later, usually after birth, secondary ossification centers form in the epiphyses.
What is medullary bone?
Medullary bone is a special bone tissue forming on the endosteal surface of the medullary cavity in the bones of female birds prior to and during egg-laying to serve as a calcium reservoir for building the hard eggshell.
What is in the medullary cavity of bones?
The medullary cavity is the hollow part of bone that contains bone marrow. The bone marrow makes blood cells and stores fat.
What tissue is found in the medullary cavity of a long bone quizlet?
In anatomy the endosteum (plural endostea) is a thin vascular membrane of connective tissue that lines the surface of the bony tissue that forms the medullary cavity of long bones.
Which bone has no medullary cavity?
The Adult Clavicle. Despite the lack of a medullary cavity, the clavicle is classified as a long bone and articulates with the manubrium medially and the acromion process of the scapula laterally. It passes horizontally across the root of the neck and is subcutaneous throughout most of its length.
Which part of a long bone surrounds a cavity of marrow?
medullary cavity
Notice the long shaft or diaphysis in the middle of the bone. The diaphysis contains compact bone surrounding a medullary cavity containing bone marrow On either end is an epiphysis containing cancellous or spongy bone.
Where are the osteocytes?
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 is in medullary cavity?
The medullary cavity is the hollow part of bone that contains bone marrow. The bone marrow makes blood cells and stores fat. Spongy bone (also called cancellous bone) is made up of small, needle-like pieces of bone arranged like a honeycomb.
Which bones have no medullary cavity?
What is the function of the medullary cavity?
The medullary cavity (medulla- = marrow), or marrow cavity, is a hollow, cylindrical space within the diaphysis that contains fatty yellow bone marrow and numerous blood vessels in adults. This cavity minimizes the weight of the bone by reducing the dense bony material where it is least needed.
What makes up the outside of a long bone?
Long bones have a thick outside layer of compact bone and an inner medullary cavity containing bone marrow. The ends of a long bone contain spongy bone and an epiphyseal line. The epiphyseal line is a remnant of an area that contained hyaline cartilage that grew during childhood to lengthen the bone.
Which is part of the bone contains connective tissue?
The cellular layer is adjacent to the cortical bone and is covered by an outer fibrous layer of dense irregular connective tissue (see Figure 6.3.4a ). The periosteum also contains blood vessels, nerves, and lymphatic vessels that nourish compact bone. Tendons and ligaments attach to bones at the periosteum.
Which is part of the bone filled with red bone marrow?
The wider section at each end of the bone is called the epiphysis (plural = epiphyses), which is filled internally with spongy bone, another type of osseous tissue. Red bone marrow fills the spaces between the spongy bone in some long bones.