Appendicular Skeleton Lesson Plans & Worksheets | Lesson Planet - Free Printable

To label the skeleton correctly, we need to identify the major bones based on their location in the human body. Let's go through them from top to bottom, grouping them by body part.

Step 1: The Head and Neck
* The large bone that makes up the head is the Skull.
* The long bone in the neck that supports the head is the Cervical Vertebrae (or simply Vertebrae/Spine).

Step 2: The Chest and Shoulders
* The flat bone in the center of the chest is the Sternum (breastbone).
* The curved bones protecting the heart and lungs are the Ribs.
* The bone connecting the arm to the body at the shoulder is the Clavicle (collarbone).
* The large, flat, triangular bone behind the shoulder is the Scapula (shoulder blade).

Step 3: The Arms
* The long bone in the upper arm is the Humerus.
* The two bones in the forearm are the Radius (on the thumb side) and the Ulna (on the pinky side).
* The small bones in the wrist are called Carpals.
* The bones in the fingers are called Phalanges.

Step 4: The Lower Body (Pelvis and Legs)
* The large basin-shaped bone structure at the waist is the Pelvis.
* The long bone in the thigh is the Femur (the longest bone in the body).
* The small round bone covering the front of the knee is the Patella (kneecap).
* The two bones in the lower leg are the Tibia (shinbone, the larger one) and the Fibula (the thinner one next to it).
* The bones in the ankle are called Tarsals.
* The bones in the toes are also called Phalanges.

Step 5: The Back
* The series of bones running down the back are the Vertebrae. Specifically, the ones in the lower back are the Lumbar Vertebrae, and the fused ones at the base are the Sacrum and Coccyx.

Based on standard anatomy diagrams like this, here are the labels for the lines shown:

Left Side Labels (Top to Bottom):
1. Skull (Head)
2. Cervical Vertebrae (Neck)
3. Clavicle (Collarbone)
4. Sternum (Breastbone)
5. Ribs
6. Humerus (Upper Arm)
7. Radius & Ulna (Forearm - often grouped or labeled separately depending on line precision)
8. Pelvis (Hip bone)
9. Femur (Thigh)
10. Tibia & Fibula (Lower Leg)

Right Side Labels (Top to Bottom):
1. Mandible (Jawbone - sometimes included if pointing to jaw, otherwise Skull)
2. Scapula (Shoulder Blade)
3. Humerus (Upper Arm)
4. Radius (Forearm)
5. Ulna (Forearm)
6. Carpals (Wrist)
7. Metacarpals (Hand/Palm)
8. Phalanges (Fingers)
9. Patella (Kneecap)
10. Tibia (Shin)
11. Fibula (Calf bone)
12. Tarsals (Ankle)
13. Metatarsals (Foot)
14. Phalanges (Toes)

Since the exact number of lines corresponds to specific major bones, here is the most common labeling key for this specific diagram layout:

Left Side:
1. Skull
2. Clavicle
3. Sternum
4. Ribs
5. Humerus
6. Radius/Ulna
7. Pelvis
8. Femur
9. Tibia/Fibula

Right Side:
1. Mandible (or Skull)
2. Scapula
3. Humerus
4. Radius
5. Ulna
6. Carpals
7. Phalanges (Hand)
8. Patella
9. Tibia
10. Fibula
11. Tarsals
12. Phalanges (Foot)

Final Answer:
Here are the correct labels for the skeleton diagram, organized by general location:

Head & Torso:
* Skull: The head bone.
* Mandible: The jawbone.
* Clavicle: The collarbone.
* Scapula: The shoulder blade.
* Sternum: The breastbone.
* Ribs: The cage around the chest.
* Vertebrae: The spine/backbones.
* Pelvis: The hip bones.

Arms & Hands:
* Humerus: Upper arm bone.
* Radius: Forearm bone (thumb side).
* Ulna: Forearm bone (pinky side).
* Carpals: Wrist bones.
* Metacarpals: Hand/palm bones.
* Phalanges: Finger bones.

Legs & Feet:
* Femur: Thigh bone.
* Patella: Kneecap.
* Tibia: Shinbone (larger lower leg bone).
* Fibula: Calf bone (smaller lower leg bone).
* Tarsals: Ankle bones.
* Metatarsals: Foot bones.
* Phalanges: Toe bones.