Table of Contents
What is the histological structure of bones?
The structural layout of bone can be classified in one of the following groups: either trabecular (cancellous or spongy) or compact. Histologically, spongy bone is comprised of anastomosing strips of slender bone known as trabeculae that enclose marrow and blood vessels.
What are the bones in the hand?
There are 3 major types of bones in the hand itself, including:
- Phalanges. The 14 bones that are found in the fingers of each hand and also in the toes of each foot.
- Metacarpal bones. The 5 bones that compose the middle part of the hand.
- Carpal bones. The 8 bones that create the wrist.
What is tubular bone?
Tubular bone – long tubular bones are bones of the extremities (e.g. femur, humerus); short tubular bones are bones of hands and feet. Irregular bone – bones of the face and vertebrae. Sesamoid bones – patella.
What is the histology of 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 is the hand made of?
The human hand is made up of a total of 27 individual bones: 8 carpal bones, 5 metacarpal bones and 14 “finger bones” (also called phalanges) are connected by joints and ligaments.
What are the parts of a hand called?
Phalanges are the finger bones. Metacarpals are the middle part of the hand bones. Carpals are the wrist bones. Joints are places where bones fit together, allowing movement.
What is a histological image?
Histopathology is the study of the signs of the disease using the microscopic examination of a biopsy or surgical specimen that is processed and fixed onto glass slides. To visualize different components of the tissue under a microscope, the sections are dyed with one or more stains.
What are bone cells called?
Bone is composed of four different cell types; osteoblasts, osteocytes, osteoclasts and bone lining cells. Osteoblasts, bone lining cells and osteoclasts are present on bone surfaces and are derived from local mesenchymal cells called progenitor cells.
How many bones does a hand have?
27 bones
The human hand is made up of the wrist, palm, and fingers and consists of 27 bones, 27 joints, 34 muscles, over 100 ligaments and tendons, and many blood vessels and nerves.
What are parts of hand called?
What is laminar bone?
Laminar bone membranes are made from thin sheets of cortical bone which has been processed to be flexible without breaking, while still supporting weight. These allografts are perfect for procedures where a membrane with rigidity is required, in order to maintain space and allow healing of a larger defect.
What is the anatomy of the hand and wrist?
Anatomy of the Hand and Wrist: Bones, Muscles, Tendons, Nerves. The wrist links the hand to the arm. The wrist is a complex mechanical system of 8 small bones known as the carpal bones. The carpal bones are arranged in 2 interrelated rows. One row connects with the ends of the bones in the forearm— radius and ulna.
How are the carpal bones arranged in the hand?
The carpal bones are arranged in 2 interrelated rows. One row connects with the ends of the bones in the forearm—the radius and ulna. If you hold your hand in the thumbs-up position, the bone on the top of your forearm is the radius; the one on the bottom is the ulna.
What is bone histology?
Histology of Bone. The strength, shape and stability of the human body are dependent on the musculoskeletal system. The most robust aspect of this unit is the underlying bony architecture.
What bone links the hand to the arm?
The wrist links the hand to the arm. The wrist is a complex mechanical system of 8 small bones known as the carpal bones. The carpal bones are arranged in 2 interrelated rows. One row connects with the ends of the bones in the forearm—radius and ulna.