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An acromian process is characteristically found in the: [2005]
- a)pelvic girdle of mammals
- b)pectoral girdle of mammals
- c)skull of frog
- d)sperm of mammals
Correct answer is option 'B'. Can you explain this answer?
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An acromian process is characteristically found in the: [2005]a)pelvic...
Each half of pectoral girdle has two bones i.e. clavicle and scapula. A spine like, acromian process is attached to scapula for articulation with clavicle bone.
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An acromian process is characteristically found in the: [2005]a)pelvic...
Acromion Process in the Pectoral Girdle of Mammals
The acromion process is a bony projection that extends from the scapula (shoulder blade) and forms part of the shoulder joint. It is a characteristic feature of the pectoral girdle (shoulder girdle) of mammals, including humans.
Function of the Acromion Process
The acromion process serves several important functions:
1. It provides a surface for attachment of muscles and ligaments that stabilize the shoulder joint.
2. It helps to protect the underlying joint by forming a bony arch over the humerus (upper arm bone).
3. It contributes to the range of motion of the shoulder joint by providing a point of articulation with the clavicle (collarbone).
Comparison with Other Structures
While some animals have similar bony projections in other parts of the body (such as the iliac crest in the pelvic girdle of mammals), the acromion process is unique to the pectoral girdle of mammals.
For example, frogs have a distinct cranial crest on their skull, but this is not considered an acromion process. Similarly, sperm cells do not have any bony structures.
Conclusion
In summary, the acromion process is a characteristic feature of the pectoral girdle of mammals, where it serves important functions in shoulder joint stability, protection, and range of motion. It is not found in other parts of the body or in other types of animals.
The acromion process is a bony projection that extends from the scapula (shoulder blade) and forms part of the shoulder joint. It is a characteristic feature of the pectoral girdle (shoulder girdle) of mammals, including humans.
Function of the Acromion Process
The acromion process serves several important functions:
1. It provides a surface for attachment of muscles and ligaments that stabilize the shoulder joint.
2. It helps to protect the underlying joint by forming a bony arch over the humerus (upper arm bone).
3. It contributes to the range of motion of the shoulder joint by providing a point of articulation with the clavicle (collarbone).
Comparison with Other Structures
While some animals have similar bony projections in other parts of the body (such as the iliac crest in the pelvic girdle of mammals), the acromion process is unique to the pectoral girdle of mammals.
For example, frogs have a distinct cranial crest on their skull, but this is not considered an acromion process. Similarly, sperm cells do not have any bony structures.
Conclusion
In summary, the acromion process is a characteristic feature of the pectoral girdle of mammals, where it serves important functions in shoulder joint stability, protection, and range of motion. It is not found in other parts of the body or in other types of animals.
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An acromian process is characteristically found in the: [2005]a)pelvic girdle of mammalsb)pectoral girdle of mammalsc)skull of frogd)sperm of mammalsCorrect answer is option 'B'. Can you explain this answer?
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