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The bones that form a bridge between the...

The bones that form a bridge between the cranium and the upper jaw dorsally and ventrally , are respectively

A

Squamosal and pterygoid

B

Quadratojugal and pro-otic

C

Both the exo-occipitals

D

Maxillary and quadrate

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The correct Answer is:
To solve the question regarding the bones that form a bridge between the cranium and the upper jaw dorsally and ventrally, we can break down the information as follows: ### Step-by-Step Solution: 1. **Understanding the Question**: The question asks for the names of the bones that connect the cranium (the skull) to the upper jaw (maxilla) in two orientations: dorsally (upper side) and ventrally (lower side). 2. **Identifying the Dorsal Bone**: The bone that forms the dorsal connection between the cranium and the upper jaw is the **maxilla**. The maxilla is a crucial part of the facial skeleton and forms the upper jaw. 3. **Identifying the Ventral Bone**: The bone that forms the ventral connection is the **mandible**. The mandible is the lower jawbone and articulates with the maxilla, providing a connection to the cranium. 4. **Conclusion**: Therefore, the bones that form a bridge between the cranium and the upper jaw dorsally and ventrally are the **maxilla (dorsally)** and the **mandible (ventrally)**. ### Final Answer: The bones that form a bridge between the cranium and the upper jaw dorsally and ventrally are respectively the **maxilla** (dorsally) and the **mandible** (ventrally). ---
To solve the question regarding the bones that form a bridge between the cranium and the upper jaw dorsally and ventrally, we can break down the information as follows: ### Step-by-Step Solution: 1. **Understanding the Question**: The question asks for the names of the bones that connect the cranium (the skull) to the upper jaw (maxilla) in two orientations: dorsally (upper side) and ventrally (lower side). 2. **Identifying the Dorsal Bone**: The bone that forms the dorsal connection between the cranium and the upper jaw is the **maxilla**. The maxilla is a crucial part of the facial skeleton and forms the upper jaw. ...
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