Synarthroses joint is present between

Options

A. Skull bones
B. Sternum and ribs
C. Upper ends of radius and ulna
D. Carpals and metacarpals

Answer

**Step-by-Step Solution:**

1. **Understand the Definition of Synarthroses Joints:**
- Synarthroses joints are defined as immovable joints. They do not allow any movement between the bones that are connected by these joints.

2. **Identify the Options Given:**
- The question provides several options to choose from regarding where synarthroses joints are present.

3. **Evaluate Each Option:**
- **Option 1: Skull Bones**
- The joints between the skull bones are known as sutures, which are indeed synarthroses joints because they do not allow movement.
- **Option 2: Sternum and Ribs**
- The joint between the sternum and ribs is called the sternocostal joint, which is a cartilaginous joint, not a synarthrosis joint.
- **Option 3: Upper Ends of Radius and Ulna**
- The upper ends of the radius and ulna form a joint called the proximal radioulnar joint, which allows for some movement (pronation and supination), so it is not a synarthrosis joint.
- **Option 4: Carpals and Metacarpals**
- The joint between carpals and metacarpals is known as the carpometacarpal joint, which is also not a synarthrosis joint as it allows for some movement.

4. **Conclusion:**
- After evaluating all the options, the only correct answer is **Option 1: Skull Bones**, as the joints between the skull bones are synarthroses joints.

**Final Answer:**
Synarthroses joints are present between the **Skull Bones** (Option 1).

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