QUESTION IMAGE
Question
the rib cage is made of ______ pairs of ribs.
8
7
12
10
<pre_analysis>
{
"quality": "clear",
"question_count": 1,
"skills_matched": [
"direct_cot",
"multiple_choice_formatter",
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"needs_drawing": false,
"concepts_used": [
"Rib Classification",
"Thoracic Cage Anatomy"
],
"new_concepts": [],
"current_concepts": [
"Thoracic Cage Anatomy",
"Rib Classification"
]
}
</pre_analysis>
<reasoning>
Identify the anatomical structure
Using the Thoracic Cage Anatomy knowledge point
The human thoracic cage, or rib cage, is a bony structure that encloses and protects the thoracic cavity, housing vital organs such as the heart and lungs.
Determine the number of rib pairs
Using the Rib Classification knowledge point
Humans typically possess 12 pairs of ribs, making a total of 24 ribs. These are classified into true ribs (pairs 1–7), false ribs (pairs 8–10), and floating ribs (pairs 11–12).
</reasoning>
<answer>
<mcq-option>8</mcq-option>
<mcq-option>7</mcq-option>
<mcq-correct>12</mcq-correct>
<mcq-option>10</mcq-option>
</answer>
<post_analysis>
{
"subject": "Natural Science",
"question_type": "Multiple Choice",
"knowledge_point": [
"Natural Science",
"Anatomy",
"Thoracic Cage Anatomy"
]
}
</post_analysis>
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<pre_analysis>
{
"quality": "clear",
"question_count": 1,
"skills_matched": [
"direct_cot",
"multiple_choice_formatter",
"explain_then_answer",
"tutor",
"mastery_adaptive_brevity"
],
"needs_drawing": false,
"concepts_used": [
"Rib Classification",
"Thoracic Cage Anatomy"
],
"new_concepts": [],
"current_concepts": [
"Thoracic Cage Anatomy",
"Rib Classification"
]
}
</pre_analysis>
<reasoning>
Identify the anatomical structure
Using the Thoracic Cage Anatomy knowledge point
The human thoracic cage, or rib cage, is a bony structure that encloses and protects the thoracic cavity, housing vital organs such as the heart and lungs.
Determine the number of rib pairs
Using the Rib Classification knowledge point
Humans typically possess 12 pairs of ribs, making a total of 24 ribs. These are classified into true ribs (pairs 1–7), false ribs (pairs 8–10), and floating ribs (pairs 11–12).
</reasoning>
<answer>
<mcq-option>8</mcq-option>
<mcq-option>7</mcq-option>
<mcq-correct>12</mcq-correct>
<mcq-option>10</mcq-option>
</answer>
<post_analysis>
{
"subject": "Natural Science",
"question_type": "Multiple Choice",
"knowledge_point": [
"Natural Science",
"Anatomy",
"Thoracic Cage Anatomy"
]
}
</post_analysis>