Left hand bone structure

Our hands are a complex collection of 19 bones 15 joints three nerves and many muscles and ligaments. This connects to the thumb.

The thumb has two knuckle joints.

Left hand bone structure. This bone is on the thumb side of the hand near the radius. This bone rests between the scaphoid and triquetrum in the proximal row. Numerous muscles ligaments tendons and sheaths can be found within the hand.

The muscles are the structures that can contract allowing movement of the bones in the hand. The ligaments are fibrous tissues that help bind together the joints in the hand. The sheaths are tubular structures that surround part of the fingers.

Key facts about the anatomy of the hand. Scaphoid lunate triquetrum pisiform trapezium trapezoid capitate hamate Metacarpals. Base shaft head Phalanges.

Proximal middle distal phalanges. Abductor pollicis brevis adductor pollicis flexor pollicis brevis opponens pollicis. The bones of the hand provide support and flexibility to the soft tissues.

They can be divided into three categories. Carpal bones Proximal A set of eight irregularly shaped bones. These are located in the wrist area.

Metacarpals There are five metacarpals each one related to a digit. Phalanges Distal The bones of the fingers. Each finger has three phalanges except for the thumb.

The final bone which is smallest and furthest from the hand is called the distal phalanx. The thumb does not have a middle phalanx. Finger Joints Knuckles Each finger contains 3 joints more commonly known as knuckles.

The thumb has two knuckle joints. Compact bone is dense so that it can withstand compressive forces while spongy bone also called cancellous bone has open spaces and is supportive but also lightweight and can be readily remodeled to accommodate changing body needs. Compact bone is the denser stronger of the two types of osseous tissue Figure 636.

It makes up the outer cortex of all bones and is in immediate. The hand bones are known as the metacarpals and correspond to the phalanges the first metacarpal articulates with the proximal phalanx of the first finger. Each phalanx has three parts.

Also Haversian system basic structural unit of compact bone. Made of concentric layers of calcified matrix perforating canal also Volkmanns canal channel that branches off from the central canal and houses vessels and nerves that extend to the periosteum and endosteum periosteum. Altogether there are 8 carpal bones in the wrist which are arranged in two rows known as proximal and distal.

When referring to bones proximal means near to and distal means further away. The carpal bones consist of the following. These join your hand to the two long bones in your forearm the radius and ulna.

The carpal bones are small square oval and triangular bones. The skeleton of the human hand consists of 27 bones. The eight short carpal bones of the wrist are organized into a proximal row scaphoid lunate triquetral and pisiform which articulates with the bones of the forearm and a distal row trapezium trapezoid capitate and hamate which articulates with the bases of the five metacarpal bones of the hand.

In this image you may find Bones Of Right Hand Anatomy And X-ray View. We are pleased to provide you with the picture named. We hope this picture can help you study and research.

For more anatomy content please follow us and visit our website. The wrist is a complex joint that connects the radius and ulna the 2 bones in the forearm to the carpals in the hand. In most textbooks youll find the wrists purpose stated as.

The wrist and hand allow for the manipulation of objects in space and. Hand grasping organ at the end of the forelimb of certain vertebrates that exhibits great mobility and flexibility in the digits and in the whole organ. It is made up of the wrist joint the carpal bones the metacarpal bones and the phalanges.

Our hands are a complex collection of 19 bones 15 joints three nerves and many muscles and ligaments. Bones form the hardened infrastructure of the hand while ligaments hold the bones together and keep them in place. Working in concert these components come together to allow the hand to perform highly skilled operations.

Recent hand surgery literature Ladd 2012 indicates 7 principle ligaments previously as many as 16 ligaments identified Bettinger Dorsal. Dorsal radial ligament DRL Dorsal central ligament DCL Posterior oblique ligament POL Volar. Anterior oblique ligament AOL Ulnar collateral ligament UCL.

Anatomically the thumb is compromised of the metacarpal connected to the trapezium a carpal bone in the wrist. This first metacarpal connects to the proximal phalanx. This connects to the thumb.

Real human carpals and metacarpal hand bones - hand bone stock pictures royalty-free photos images.