How are the phalanges labeled?
The digits have a universal labeling system using the anatomical position of the hand (palm facing anteriorly) as reference. Going from lateral to medial, they are named thumb (digit 1), index finger (digit 2), middle finger (digit 3), ring finger (digit 4) and little finger (digit 5).
Where are phalanges located?
fingers
Phalanges. The 14 bones that are found in the fingers of each hand and also in the toes of each foot.
What are the parts of the phalanges?
The phalanges are comprised of the proximal, middle, and distal groups. The proximal bones are located just below the knuckle, while the middle bones are located above the knuckle. The distal phalanges are the fingertips. This is why the term terminal phalanges may be interchangeable with distal phalanges.
What are the 14 phalanges?
A phalange is any of the bones in the fingers and toes. In humans, there are 14 phalanges in each hand and foot, 2 in each thumb and big toe, and 3 in the remaining digits. They are connected to the metacarpals in the hand and the metatarsals in the foot.
What is the first phalange?
The proximal phalanx of the fingers is the proximal, or first bone, in the fingers when counting from the hand to the tip of the finger. There are three phalanges in each finger. The proximal phalanx is the largest of the three bones in each finger; it has joints with the metacarpal and with the middle phalanx.
What type of bone is phalanges?
long bones
The phalanges /fəˈlændʒiːz/ (singular: phalanx /ˈfælæŋks/) are digital bones in the hands and feet of most vertebrates. In primates, the thumbs and big toes have two phalanges while the other digits have three phalanges. The phalanges are classed as long bones.
What is the phalange function?
Each finger contains all three types of phalanx except for the big toe and thumb, which are missing the middle phalanx. The phalanges function to allow us to grip and hold onto objects.
What type of bones are phalanges?
The phalanges /fəˈlændʒiːz/ (singular: phalanx /ˈfælæŋks/) are digital bones in the hands and feet of most vertebrates. In primates, the thumbs and big toes have two phalanges while the other digits have three phalanges. The phalanges are classed as long bones.
What are the features of phalanges?
The phalanges are all shorter than metacarpals, lack rounded heads, and are anteroposteriorly flattened in their shafts. The thumb phalanges are shorter and squatter than the others, and the thumb lacks an intermediate phalanx. The expanded proximal end of each phalanx is the base.
What is the 1st phalange?
The first phalanges are located in the big toe. Proximal Phalanges: 1st proximal phalanx. 2nd proximal phalanx.
Is a thumb a phalange?
Each finger has three bones, or phalanges, except for the thumb, which instead has two phalanges. The first bone — the distal phalange — extends from the tip of the thumb to the knuckle.
How many phalanges are in the human body?
56 phalanges
There are 56 phalanges in the human body, with fourteen on each hand and foot. Three phalanges are present on each finger and toe, with the exception of the thumb and large toe, which possess only two.
Where are the phalanges located in the body?
Where are the Phalanges Located. Located within each digit, above the metacarpals, these are the terminal bones (located farthest from the center of the body) of the upper limbs in humans [6] You can feel the phalanges within your fingers and thumb, with each section of a finger having one phalanx.
Why do our thumbs have only two phalanges?
Thumbs of both hand and feet have only two phalanges because intermediate phalanges accreted with distal ones during the development. The word “phalanx” or “phalanges” was originated from Greek language referring to military formations in which soldiers stand side by side in several rows.
Does the phalangeal head have an articular surface?
Distally, the trochlea or phalangeal head has an articular surface that links the proximal phalanges to the middle phalanges and in the case of the thumb, to its distal phalanx.
How many phalanges are there in the middle finger?
There are four middle phalanges which correspond to the index finger, the middle finger, the ring finger and the little finger. They have a proximal base and a distal head which is separated by a much shorter shaft than that of the proximal phalanges.