Educational worksheet on the muscular system with drag-and-drop activity to identify muscle names.

Let's solve this muscular system labeling task step by step.

We are given a list of muscles and two figures: one showing the front of the human body and one showing the back. We need to match each muscle name to its correct location on the body.

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✔ List of Muscles Provided:

- dorsals
- quadriceps
- gluteus
- triceps
- biceps
- facial muscles
- deltoids
- frontalis muscle
- abdominals
- pectorals
- calf muscles
- trapezius

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Now, let’s identify where each muscle is located based on the diagrams.

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🔹 Front View (Left Figure):

1. Face (around eyes and forehead) → frontalis muscle
- The frontalis muscle is in the forehead area, responsible for raising the eyebrows.

2. Face (cheeks, lips, around mouth) → facial muscles
- These control facial expressions.

3. Upper chest / shoulder area → pectoralis (pectoral muscles)
- Large muscles in the chest that help move the arms.

4. Upper arm (front side) → biceps
- Located on the front of the upper arm; bends the elbow.

5. Abdomen (stomach area) → abdominals
- Muscles in the stomach region (rectus abdominis).

6. Thighs (front of legs) → quadriceps
- Four muscles on the front of the thigh.

7. Lower leg (calf) → calf muscles
- Gastrocnemius and soleus muscles at the back of the lower leg.

Wait — but the calf muscles are actually on the back of the lower leg, so they might be labeled from the back view, not front.

But in the diagram, the calf muscles are shown as being pointed to from the front figure? Let's check the lines.

Looking closely:

- The front figure has 6 boxes:
1. Head/face
2. Neck/upper face
3. Chest
4. Upper arm
5. Abdomen
6. Thigh

So likely:

1. Frontalis muscle → forehead
2. Facial muscles → cheeks/lips
3. Pectorals → chest
4. Biceps → upper arm (front)
5. Abdominals → stomach
6. Quadriceps → front of thigh

But wait — calf muscles are on the lower leg, and they're posterior, so they should be on the back view.

So perhaps the calf muscles are labeled from the back side?

Let’s now analyze the back view.

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🔹 Back View (Right Figure):

1. Neck and upper back → trapezius
- A large triangular muscle from the neck down to the mid-back.

2. Mid-back → dorsals
- This refers to the latissimus dorsi, commonly called "lats", which cover the sides and back.

3. Upper arm (back side) → triceps
- On the back of the upper arm.

4. Buttocks → gluteus
- Gluteus maximus is the main muscle of the buttocks.

5. Lower leg (back) → calf muscles
- Gastrocnemius and soleus — these are posterior to the lower leg.

6. Shoulder (top of shoulder) → deltoids
- Deltoid muscles cover the shoulder joint.

Wait — deltoids are on both front and back of the shoulder, but in the back view, the posterior deltoid is visible.

Also, deltoids are often grouped with the shoulder and appear in both views.

But we have only one box for the back shoulder.

So let’s reorganize.

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Let’s assign each muscle correctly.

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✔ Final Matching:

#### Front View (Left Figure):

1. Head (forehead) → frontalis muscle
2. Face (cheeks, mouth) → facial muscles
3. Chest → pectoralis
4. Upper arm (front) → biceps
5. Abdomen → abdominals
6. Thigh (front) → quadriceps

> So far, all six muscles are placed.

#### Back View (Right Figure):

1. Neck and upper back → trapezius
2. Mid-back (large muscles) → dorsals (latissimus dorsi)
3. Upper arm (back) → triceps
4. Buttocks → gluteus
5. Lower leg (back) → calf muscles
6. Shoulder (back) → deltoids (posterior part)

Wait — we already used deltoids? But it's a single muscle group.

Yes, deltoids are present on both front and back, but the back view shows the posterior deltoid, so it should be labeled there.

But the list includes deltoids only once — so it must go on the back view.

But what about the front? The front also has deltoids.

Ah — but the front figure already has:

- Frontalis
- Facial muscles
- Pectorals
- Biceps
- Abdominals
- Quadriceps

That’s 6.

The back figure has 6 boxes too.

So we need to assign 6 muscles to back.

Let’s list all muscles again:

- dorsals
- quadriceps
- gluteus
- triceps
- biceps
- facial muscles
- deltoids
- frontalis muscle
- abdominals
- pectorals
- calf muscles
- trapezius

Total: 12 muscles.

We have:

- 6 labels on front
- 6 labels on back

So all 12 muscles must be used — but some may be shared between views?

Wait — no, the task says: “Drag the name of the MUSCLE to its correct place.”

And there are 12 names and 12 boxes (6 front + 6 back), so each muscle is used once.

But some muscles like deltoids, biceps, triceps are on both sides, but only one label per muscle.

So likely, the deltoids are labeled on the back view, and biceps and triceps are on the arms, so they’ll be labeled on both views?

But we can’t use the same name twice.

Ah — here’s the key: the labels are for specific regions, and some muscles are only visible from one side.

Let’s reevaluate carefully.

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🧠 Correct Approach:

We have 12 muscle names, and 12 boxes (6 front, 6 back). Each name goes to one box.

So we must assign each muscle name to one box, based on the diagram.

Let’s look at the lines from the boxes to the body.

From the front figure:

1. First box → face (forehead) → frontalis muscle
2. Second box → face (mouth/cheeks) → facial muscles
3. Third box → chest → pectoralis
4. Fourth box → upper arm (front) → biceps
5. Fifth box → abdomen → abdominals
6. Sixth box → thigh (front) → quadriceps

✔ That covers:
- frontalis
- facial muscles
- pectorals
- biceps
- abdominals
- quadriceps

Now back figure:

1. First box → neck and upper back → trapezius
2. Second box → mid-back → dorsals (latissimus dorsi)
3. Third box → upper arm (back) → triceps
4. Fourth box → buttocks → gluteus
5. Fifth box → lower leg (back) → calf muscles
6. Sixth box → shoulder (back) → deltoids (posterior deltoid)

Wait — but deltoids are on both front and back, but we’ve already used biceps and triceps on the front?

No — biceps is on the front of the arm, triceps on the back.

So triceps is on the back view.

Similarly, deltoids are on the shoulder, and both views show them, but since deltoids are listed once, and the back view shows the posterior deltoid, it makes sense to label deltoids on the back.

But what about the front? The front already has biceps, pectoralis, etc.

Is deltoids missing from the front?

Yes — but the front figure shows the anterior deltoid, which is part of the deltoid muscle group.

But if we’re only allowed to use each name once, then deltoids must go to the back view.

But then the front doesn’t have a label for the shoulder.

Wait — let’s double-check the front figure:

The third box points to the chest, which is pectoralis — correct.

The fourth box points to the upper arm — biceps — correct.

So the shoulder is not directly labeled on the front — it’s under pectoralis or deltoids?

But the deltoid is above the pectoral.

In the diagram, the deltoid is clearly visible on the shoulder, and it's separate from the pectoral.

But in the front figure, the box pointing to the shoulder is not labeled — but the fourth box is pointing to the upper arm, which is biceps.

Wait — the deltoid is the shoulder muscle, not the arm.

So the biceps is below the deltoid.

So the front figure has:

- Box 1: forehead → frontalis
- Box 2: face → facial muscles
- Box 3: chest → pectorals
- Box 4: upper arm (biceps) → biceps
- Box 5: abdomen → abdominals
- Box 6: thigh → quadriceps

But the shoulder (deltoid) is not labeled on the front?

But the deltoid is visible.

Wait — maybe the deltoid is included in the biceps? No — they are separate.

Ah — here's the issue: the deltoid is not labeled on the front because the biceps is labeled instead.

But deltoid is a major muscle.

Wait — let's look again.

Actually, the deltoid is the shoulder cap — it's the muscle that forms the rounded shape of the shoulder.

In the front figure, the deltoid is not pointed to by any line.

But the back figure has a line to the shoulder.

So likely, deltoids goes to the back view.

But then deltoids is not on the front?

But it's a major muscle.

Wait — perhaps I miscounted.

Let me re-express:

Re-analyze the Diagram:

From the front figure:

1. Line to forehead → frontalis muscle
2. Line to face (mouth) → facial muscles
3. Line to chest → pectoralis
4. Line to upper arm → biceps
5. Line to abdomen → abdominals
6. Line to thigh → quadriceps

All good.

Now back figure:

1. Line to neck and upper back → trapezius
2. Line to mid-back → dorsals
3. Line to upper arm (back) → triceps
4. Line to buttocks → gluteus
5. Line to lower leg (back) → calf muscles
6. Line to shoulder (back) → deltoids

Yes — that makes sense.

But deltoids is on the back view, even though it's also on the front.

But since the front already has biceps, pectoralis, etc., and deltoids is not directly labeled on the front, it must be that deltoids is labeled on the back.

But wait — deltoids is a single muscle group, and it’s visible from both sides.

But in this diagram, the back view shows the posterior deltoid, so it's appropriate to label it there.

And the front view shows biceps and pectoralis, but not deltoids explicitly.

So perhaps the deltoids is not needed on the front.

But the list includes deltoids, so it must be used.

So the only logical place is the back view.

Similarly, triceps is on the back of the arm, so it goes to the back view.

Biceps is on the front of the arm, so it goes to the front view.

So now, let’s compile the final answer.

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✔ Final Answer:

#### Front View (Left Figure):

1. frontalis muscle → forehead
2. facial muscles → face (mouth/cheeks)
3. pectoralis → chest
4. biceps → upper arm (front)
5. abdominals → stomach
6. quadriceps → front of thigh

#### Back View (Right Figure):

1. trapezius → neck and upper back
2. dorsals → mid-back (latissimus dorsi)
3. triceps → back of upper arm
4. gluteus → buttocks
5. calf muscles → back of lower leg
6. deltoids → shoulder (back)

Wait — but deltoids is not typically labeled on the back alone — it's a shoulder muscle.

But in this diagram, the back view has a line pointing to the shoulder, so it's acceptable.

Alternatively, could deltoids be on the front?

But the front already has biceps on the arm, and pectoralis on the chest — the shoulder is not labeled.

But deltoids is the muscle covering the shoulder.

So why isn't it labeled on the front?

Unless the deltoid is considered part of the upper arm or shoulder.

But in standard anatomy, deltoid is a separate muscle.

However, in this diagram, the deltoid is likely intended to be labeled on the back view, since the front view focuses on biceps, pectoralis, etc.

But let’s check: is deltoids used anywhere?

Yes — and it must go to the back view.

But then the front view misses it.

Wait — perhaps the front view has deltoids in the third box? But the third box points to the chest, which is pectoralis.

So no.

Alternative idea: maybe deltoids is meant to be on the front view, but the line is pointing to the shoulder, but in the image, it seems the third box is pointing to the chest, not shoulder.

Looking at the image description:

- The third box on the front has a line going to the chest — that’s pectoralis.
- The fourth box goes to the upper arm — biceps.
- So the shoulder is not labeled on the front.

Therefore, deltoids must be on the back view.

So final assignment:

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✔ Correct Labeling:

#### Front View (Left):

1. frontalis muscle
2. facial muscles
3. pectoralis
4. biceps
5. abdominals
6. quadriceps

#### Back View (Right):

1. trapezius
2. dorsals
3. triceps
4. gluteus
5. calf muscles
6. deltoids

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✔ Summary:

| Box | Muscle Name |
|-----|-------------|
| Front 1 | frontalis muscle |
| Front 2 | facial muscles |
| Front 3 | pectorals |
| Front 4 | biceps |
| Front 5 | abdominals |
| Front 6 | quadriceps |
| Back 1 | trapezius |
| Back 2 | dorsals |
| Back 3 | triceps |
| Back 4 | gluteus |
| Back 5 | calf muscles |
| Back 6 | deltoids |

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📌 Explanation:

- Frontalis and facial muscles are in the head.
- Pectorals are in the chest.
- Biceps are on the front of the upper arm.
- Abdominals are in the stomach.
- Quadriceps are on the front of the thighs.
- Trapezius runs from the neck to the mid-back.
- Dorsals (latissimus dorsi) are large muscles on the back.
- Triceps are on the back of the upper arm.
- Gluteus is the buttock muscle.
- Calf muscles are on the back of the lower leg.
- Deltoids are the shoulder muscles — labeled on the back view due to visibility.

Even though deltoids are on both sides, the diagram places it on the back view where it's clearly visible.

This matches the typical educational labeling practice.

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✔ Final Answer:
Label the boxes as follows:

Front:
1. frontalis muscle
2. facial muscles
3. pectorals
4. biceps
5. abdominals
6. quadriceps

Back:
1. trapezius
2. dorsals
3. triceps
4. gluteus
5. calf muscles
6. deltoids