Real context moved 0.0pp on Paraphrase Non-Invariance.

In an adult human, the **total number of bones** is typically **206**. This number can vary slightly from person to person due to individual anatomical differences, such as the presence of extra small bones (e.g., sesamoid bones) or variations in the number of vertebrae. ### Breakdown of Major Bone Groups: 1. **Axial Skeleton (80 bones)** – Includes the skull, vertebral column, ribs, and sternum. - **Skull (28 bones)** – 8 cranial bones, 14 facial bones, 3 auditory ossicles (6 total), 1 hyoid bone. - **Vertebral Column (26 bones)** – 7 cervical, 12 thoracic, 5 lumbar, 1 sacrum (fused), 1 coccyx (fused). - **Thoracic Cage (25 bones)** – 12 pairs of ribs, 1 sternum. 2. **Appendicular Skeleton (126 bones)** – Includes the limbs, shoulder, and pelvic girdles. - **Upper Limbs (60 bones)** – 2 arms (30 bones each: humerus, radius, ulna, 8 carpals, 5 metacarpals, 14 phalanges). - **Lower Limbs (60 bones)** – 2 legs (30 bones each: femur, tibia, fibula, 7 tarsals, 5 metatarsals, 14 phalanges). - **Shoulder & Pelvic Girdles (6 bones)** – 2 clavicles, 2 scapulae, 2 hip bones (each formed by 3 fused bones: ilium, ischium, pubis). ### Notes: - **Infants** are born with around **270–300 bones**, but many fuse as they grow (e.g., the skull and spine). - **Sesamoid bones** (e.g., the patella or kneecap) are not always counted in the standard 206, as they can vary in number. Would you like a more detailed breakdown of any specific bone group?

detector fmi_5_2_v1: answers invariant across paraphrases