What kind of bone is the metacarpal?
Medical Definition of Bone type Short bones: Short bones also have a tubular shaft and articular surfaces at each end but are much smaller. The short bones include all of the metacarpals and phalanges in the hands, and the metatarsals and phalanges in the feet. Flat bones: Flat bones are thin and have broad surfaces.
What is the structure of metacarpals?
The metacarpus is a group of five bones of the hand between the phalanges and the carpus. Even though the metacarpal bones are small, they are classified as long bones since they have structural characteristics of long bones; each metacarpal bone consists of a shaft, distal head and a wide proximal base.
What do the metacarpal bones form?
The metacarpal bones form the palm of the hand. The thumb and fingers consist of the phalanx bones. The carpal bones form the base of the hand.
What are the five metacarpal bones?
The hand contains five metacarpal bones that articulate proximally with the carpals and distally with the proximal phalanges. They are numbered moving lateral to medial, and start with the thumb, which is metacarpal I, and end with metacarpal V, the little finger.
How many metacarpal bones are there?
The palm has five bones known as metacarpal bones, one to each of the 5 digits. These metacarpals have a head, a shaft, and a base.
What type of bone is the calcaneus?
tarsal bones
The calcaneus (heel bone) is the largest of the tarsal bones in the foot. It lies at the back of the foot (hindfoot) below the three bones that make up the ankle joint. These three bones are the: Tibia — shinbone.
Where is metacarpal bone?
the hand
The metacarpal bones are five long bones of the hand between the carpal bones and the proximal phalanges of the hand that make up most of the palm.
Where is the metacarpal vein?
The veins on the dorsum of the hand. The dorsal digital veins from the adjacent sides of the fingers unite to form three dorsal metacarpal veins, which end in a dorsal venous net-work opposite the middle of the metacarpus.
Why is the metacarpal bone important?
The basic function of the metacarpals is to act as the bridge between the wrist and fingers, forming the framework of the hand. Together as the carpus, it is the vital part of the skeleton that holds together the small and large bones in the human hand, stabilizing its dorsal and palmar sides.
What are the 8 wrist bones?
There are eight wrist bones, including the scaphoid bone, which is often fractured.
- Scaphoid. The scaphoid is a bone in the wrist.
- Lunate. The lunate is a bone in the middle of the wrist in the first row of wrist bones.
- Triquetrum.
- Trapezoid.
- Trapezium.
- Capitate.
- Hamate.
- Pisiform.
Where are the metacarpal bones located?
hand
In humans the five metacarpals are flat at the back of the hand and bowed on the palmar side; they form a longitudinal arch that accommodates the muscles, tendons, and nerves of the palm. The metacarpals also form a transverse arch that allows the fingertips and thumb to be brought together for manipulation.
What are hand bones called?
phalanges
Human hands contain fourteen digital bones, also called phalanges, or phalanx bones: two in the thumb (the thumb has no middle phalanx) and three in each of the four fingers. These are the distal phalanx, carrying the nail, the middle phalanx, and the proximal phalanx.