What is the typical structure of a long bone?
What is the typical structure of a long bone?
Overview. A long bone is a bone that has a shaft and 2 ends and is longer than it is wide. 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.
What are the 3 parts of a typical long bone?
Long bones are longer than they are wide. They can be divided into three regions – epiphysis, metaphysis and the diaphysis. The epiphysis contains the spongy bone (also called cancellous), which in turn contains the red bone marrow that is responsible for synthesizing blood cells.
What is typical bone?
A typical bone can be broken down into multiple parts, each with a particular function: Epiphysis. This part is at the extreme ends of the bone (epi = above), where joints (articulations) form. Articular cartilage.
What are the 5 major parts of a long bone?
List five major parts of a long bone. The major parts of a long bone include epiphysis, articular cartilage, diaphysis, periosteum, medullary cavity, endosteum, and marrow. How do compact and spongy bone differ in structure? The wall of the diaphysis is mainly composed of tightly packed tissue called compact bone.
What is the structure and function of a long bone?
Long bones are hard, dense bones that provide strength, structure, and mobility. The thigh bone (femur) is a long bone. A long bone has a shaft and two ends. Some bones in the fingers are classified as long bones, even though they are short in length.
What are the four main parts of the long bone?
Examples of long bones include the femur, tibia, radius and ulna.
- Epyphysis. Every long bone is capped with wide areas on each end which are called epiphyses.
- Diaphysis. The largest part of any long bone is the long cylindrical middle, called the diaphysis.
- Metaphysis.
- Medullary Cavity.
What are the 4 parts of a long bone?
What bones are long bones?
Long Bones They consist of a long shaft with two bulky ends or extremities. They are primarily compact bone but may have a large amount of spongy bone at the ends or extremities. Long bones include bones of the thigh, leg, arm, and forearm.
What are the 7 parts of a long bone?
Terms in this set (9)
- epiphysis. The end of a long bone – an expanded portion at each end of the bone which articulates with another bone.
- articular cartilage. Hyaline cartilage that covers ends of bones in synovial joints.
- Diaphysis. The shaft of the bone.
- Periosteum.
- Compact Bone.
- Spongy bone.
- Medullary Cavity.
- Marrow.
What are all the long bones?
Long bones are mostly located in the appendicular skeleton and include bones in the lower limbs (the tibia, fibula, femur, metatarsals, and phalanges) and bones in the upper limbs (the humerus, radius, ulna, metacarpals, and phalanges).
What is the long bone made up of?
A long bone has two main regions: the diaphysis and the epiphysis (Figure 6.3. 1). The diaphysis is the hollow, tubular shaft that runs between the proximal and distal ends of the bone. Inside the diaphysis is the medullary cavity, which is filled with yellow bone marrow in an adult.
What is the structure of 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.
How many long bones are there?
90 long bones
How many long bones are in the body? There are approximately 90 long bones in the human body. They are known as clavicle, femur, tibia, fibula, humerus, radius, ulna, metacarpals, metatarsals, and phalanges of the hands and feet.
What are short long bones?
Shortened fetal long bones (SFLB) can involve either the upper limb and/or the lower limb. It is a broad descriptive entity which can include. short fetal femur. short fetal humerus. short fetal tibia-fibula.
Which is a long bone?
What is the end of a long bone called?
epiphysis
The wider section at each end of the bone is called the epiphysis (plural = epiphyses), which is filled with spongy bone.
What are long bones examples?
Long bones are found in the arms (humerus, ulna, radius) and legs (femur, tibia, fibula), as well as in the fingers (metacarpals, phalanges) and toes (metatarsals, phalanges).
What are the examples of long bones?
What is structure of bone?
Bones consist of different types of tissue, including compact bone, spongy bone, bone marrow, and periosteum. All of these tissue types are shown in Figure below. Compact bone makes up the dense outer layer of bone. Its functional unit is the osteon. Compact bone is very hard and strong.
Can you identify the parts of a long bone?
All of the bones in the arms and legs, except the patella, and bones of the wrist, and ankle, are long bones. A typical long bone consists of the following parts: The diaphysis (growing between) is the shaft of a long bone — the long, cylindrical, main portion of the bone.
What are the primary structures of a long bone?
Diaphysis: This is the long central shaft.
What is the gross anatomy of a long bone?
Long bone anatomy. A long bone is a bone that has greater length than width. A long bone has a shaft and 2 ends. 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.
What is the main function of the long bone?
The function of long bones is centered on supporting the weight of your body as well as facilitating the movement of your body. Short bones have very equal proportions and are roughly shaped like a cube. Examples can be found in the bones of your wrists and ankles.
