Why is your thumb not a finger?

Why is your thumb not a finger?

Your thumb is different from your fingers. Your fingers have two joints and three bones called phalanges or phalanxes. A thumb only has one joint and two phalanges. Anatomically, a thumb is unique.

Is a thumb a finger or a joint?

Thumb. The thumb digit has only two phalanges (bones) so it only has one joint. The thumb interphalangeal (IP) joint is similar to the distal interphalangeal (DIP) joint in the fingers. The IP joint in thumb is located at the tip of the finger just before the fingernail starts.

Is the thumb the 1st finger?

The thumb is the first digit of the hand, next to the index finger. When a person is standing in the medical anatomical position (where the palm is facing to the front), the thumb is the outermost digit….

Is a pinky a finger?

The pinky finger is the fifth digit of the hand and is the least often utilized of the five fingers. As the smallest digit, the pinky is located next to the ring finger. In comparison to other fingers, the pinky possesses the most diminished range of motion.

Are toes fingers?

Toes are the digits (fingers) of the foot of a tetrapod. Animal species such as cats that walk on their toes are described as being digitigrade.

Is a pinky finger a finger?

The little finger, often called the pinky in American English and pinkie in Scottish English (from the Dutch word pink, meaning little finger), is the most ulnar and usually smallest finger of the human hand, opposite the thumb, next to the ring finger….

What are the 5 finger names?

Description

• index finger, pointer finger, or forefinger.
• middle finger or long finger,
• ring finger.
• little finger, pinky finger, or small finger.

What is the thumb called?

pollex
thumb, also called pollex, short, thick first digit of the human hand and of the lower-primate hand and foot. It differs from other digits in having only two phalanges (tubular bones of the fingers and toes).