Solved Posterior muscular system worksheet On the posterior ... - Free Printable

To solve the problem of labeling the major superficial and deeper muscles on the posterior muscular system worksheet, we need to identify and label each muscle based on its anatomical location. Below is a detailed explanation and solution:

Key Points to Understand

1. Superficial Muscles: These are the muscles located closer to the skin surface.
2. Deep Muscles: These are the muscles located beneath the superficial muscles, closer to the bones.
3. Posterior View: The image shows the back (posterior) side of the human body.

Solution: Labeling the Muscles

#### Right Side (Superficial Muscles)
The right side of the image shows the superficial muscles. Here are the labels for each numbered position:

1. Occipitalis - Covers the occipital region at the back of the head.
2. Sternocleidomastoid - Runs from the sternum and clavicle to the skull.
3. Trapezius - Large, diamond-shaped muscle covering the upper back.
4. Latissimus Dorsi - Broad, flat muscle extending from the lower back to the arm.
5. Rhomboid Major/Minor - Small muscles between the scapula and spine.
6. Deltoid - Forms the rounded contour of the shoulder.
7. Infraspinatus - Located below the spine of the scapula.
8. Teres Minor - Small muscle near the infraspinatus.
9. Teres Major - Larger muscle below the teres minor.
10. Biceps Brachii - Two-headed muscle in the upper arm.
11. Brachialis - Muscle in the upper arm, deep to the biceps.
12. Triceps Brachii - Three-headed muscle in the upper arm.
13. Pectoralis Major - Large chest muscle.
14. Rectus Abdominis - Long, flat muscle in the abdomen.
15. Obliquus Externus Abdominis - External oblique muscle in the abdomen.
16. Gluteus Maximus - Large, superficial muscle of the buttocks.
17. Gluteus Medius - Smaller muscle above the gluteus maximus.
18. Gluteus Minimus - Smallest of the gluteal muscles.
19. Hamstrings - Group of muscles at the back of the thigh (semitendinosus, semimembranosus, biceps femoris).
20. Gastrocnemius - Large calf muscle.
21. Soleus - Flat muscle under the gastrocnemius.
22. Tibialis Posterior - Muscle on the inner side of the lower leg.
23. Peroneus Longus - Muscle on the outer side of the lower leg.
24. Extensor Digitorum Longus - Muscle that extends the toes.
25. Flexor Digitorum Longus - Muscle that flexes the toes.
26. Flexor Hallucis Longus - Muscle that flexes the big toe.
27. Extensor Hallucis Longus - Muscle that extends the big toe.
28. Abductor Hallucis - Muscle that abducts the big toe.
29. Adductor Hallucis - Muscle that adducts the big toe.
30. Quadriceps Femoris - Large muscle group at the front of the thigh.

#### Left Side (Deeper Muscles)
The left side of the image shows the deeper muscles. Here are the labels for each numbered position:

31. Erector Spinae - Group of muscles along the spine.
32. Multifidus - Deep muscle along the spine.
33. Semispinalis Thoracis/Cervicis - Deep muscles along the spine.
34. Rotator Cuff Muscles - Supraspinatus, infraspinatus, teres minor, subscapularis.
35. Subscapularis - Muscle deep to the scapula.
36. Coracobrachialis - Muscle in the upper arm.
37. Brachioradialis - Muscle in the forearm.
38. Anconeus - Small muscle near the elbow.
39. Brachialis - Muscle in the upper arm.
40. Pectoralis Minor - Smaller muscle below the pectoralis major.
41. External Oblique - Abdominal muscle.
42. Internal Oblique - Deeper abdominal muscle.
43. Transversus Abdominis - Deepest abdominal muscle.
44. Psoas Major/Iliacus - Hip flexor muscles.
45. Gracilis - Long, thin muscle in the inner thigh.
46. Sartorius - Longest muscle in the body, running diagonally across the thigh.

Final Answer

Here is the labeled worksheet with the corresponding muscle names:

- Right Side (Superficial Muscles):
1. Occipitalis
2. Sternocleidomastoid
3. Trapezius
4. Latissimus Dorsi
5. Rhomboid Major/Minor
6. Deltoid
7. Infraspinatus
8. Teres Minor
9. Teres Major
10. Biceps Brachii
11. Brachialis
12. Triceps Brachii
13. Pectoralis Major
14. Rectus Abdominis
15. Obliquus Externus Abdominis
16. Gluteus Maximus
17. Gluteus Medius
18. Gluteus Minimus
19. Hamstrings
20. Gastrocnemius
21. Soleus
22. Tibialis Posterior
23. Peroneus Longus
24. Extensor Digitorum Longus
25. Flexor Digitorum Longus
26. Flexor Hallucis Longus
27. Extensor Hallucis Longus
28. Abductor Hallucis
29. Adductor Hallucis
30. Quadriceps Femoris

- Left Side (Deeper Muscles):
31. Erector Spinae
32. Multifidus
33. Semispinalis Thoracis/Cervicis
34. Rotator Cuff Muscles
35. Subscapularis
36. Coracobrachialis
37. Brachioradialis
38. Anconeus
39. Brachialis
40. Pectoralis Minor
41. External Oblique
42. Internal Oblique
43. Transversus Abdominis
44. Psoas Major/Iliacus
45. Gracilis
46. Sartorius

Boxed Final Answer

\boxed{
\text{See detailed labels above for both sides.}
}