Phalangeal formula for the hand is

Options

A. 23333
B. 33333
C. 33322
D. 32333

Answer

To determine the phalangeal formula for the hand, we need to analyze the structure of the bones in the fingers and thumb. Here’s a step-by-step breakdown of the solution:

### Step 1: Understand Phalanges
Phalanges are the bones that make up the fingers (digits) of the hand. Each finger consists of several phalanges.

### Step 2: Count the Phalanges in the Hand
In each human hand, there are a total of 14 phalanges:
- The thumb has 2 phalanges (proximal and distal).
- Each of the four fingers has 3 phalanges (proximal, middle, and distal).

### Step 3: Write the Phalangeal Formula
The phalangeal formula can be expressed as follows:
- For the thumb: 2 (represented as "2")
- For the four fingers: 3 + 3 + 3 + 3 (represented as "3, 3, 3, 3")

### Step 4: Combine the Counts
Putting this together, the phalangeal formula for one hand is:
- 2 (for the thumb) and 3, 3, 3, 3 (for the four fingers).

### Step 5: Finalize the Phalangeal Formula
Thus, the complete phalangeal formula for the hand can be written as:
- **2-3-3-3-3**

### Conclusion
The correct phalangeal formula for the hand is **2-3-3-3-3**.

---