1. Muscular System

2. Muscles of the facial expression
Occipitofrontalis
Orbicularis Oris
Orbicularis oculi
Auricularis
Zygomaticus

3. Muscles of the facial expression
Occipito frontalis: The occipitofrontalis is a muscle of the human skull and consists of two parts: The occipital belly, near the occipital bone, and the frontal belly, near the frontal bone.
Function :Draws the scalp back which raises the eyebrows and wrinkles the forehead.

4. Orbicularis Oculi: Origin: Medial side of eye
Insertion: Medial side of eye (returns to same attachment encircling the eye)
Action: Closes & squints the eye. Also assists in tear transport and drainage
N: CN VII (Facial nerve)

5. Zygomatic Origin: Zygomatic bone Insertion: Angle of Mouth
A: Elevation of Angle of Mouth as in smiling. Also draws laterally at the angle of the mouth
Nerve: CN VII (Facial nerve)
Zygomatic

6. Auricularis:
Origin: Cartilage of auricle
Insertion: Galeal aponeurosis
Function: Adjusts position of ear

7. Auricularis:

8. Buccinator: Origin: Maxilla and Mandible
Insertion: Lips (buccinator muscle is located in the tissue of the cheek)
Action: Compression of Cheeks (against teeth)
Nerve: CN VII (Facial nerve)

9. Masseter:
Origin: Zygomatic arch
Insertion: Angle of mandible
Function: Elevates and protracts mandible to close the jaw

11. Sternocleido mastoid Origin: sternum; clavicle
Insertion: temporal bone
Action: flexes neck; rotates head side to side; assists you to look down

12. Trapezius Origin: Vertebral column Insertion: Scapula
Action: Elevation,
adduction, depression and
outward rotation of
scapula

13. Scalenes Scalene origin
Origin: Transverse processes of the cervical vertebrae
Scalene insertion
Insertion: First and second ribs
Scalene action
Action: Bilaterally - Assists in neck flexion. Unilaterally - Neck lateral bending

14. Deltoid Origin: Lateral third of clavicle, acromion,
and spine of scapula
Insertion: Deltoid tuberosity of humerus
Action: Anterior part: flexes and medially rotates arm; Middle part: abducts arm;
Posterior part: extends and laterally rotates arm

15. Latissmus dorsi

16. Pectoralis Major

17. Biceps Brachii

18. Brachio radialis

19. Brachialis

20. Triceps Originates on scapula Inserts on olecranon
Origin: Originates on scapula
Insertion - Olecranon
Function: Extends elbow
Originates on scapula
Inserts on olecranon

21. Flexors of the wrist

22. Extensors of the wrist

23. Flexors of the Wrist
Palmaris longus-Superficial, flexes wrist
Flexor carpi ulnaris-Superficial, flexes wrist, adducts wrist
Flexor carpi radialis-Superficial, flexes wrist, abducts wrist

24. Extensors of the Wrist
Extensor carpi radialis- Superficial, extends wrist, abducts wrist
Extensor carpi ulnaris- Superficial, extends wrist, adducts wrist

25. Muscles of Respiration

26. Muscles of respiration:
Quiet breathing
Inhalation: diaphragm, external intercostals.
Exhalation: none.
Forced breathing
Inhalation: diaphragm, external intercostals, scalene, pectoralis minor,sternocleidomastiod, serratus anterior.
Exhalation: internal intercostals, abdominals

27. Muscles acting on the abdominal wall

28. Muscles acting on the abdominal wall
There are five muscles in the abdominal wall. They can be divided into two groups:
The Flat Muscles
There are three flat muscles; the external oblique, internal oblique and transversus abdominis. They are located laterally in the abdominal wall, stacked upon one another.
These muscles act to flex, laterally flex and rotate the trunk.
Vertical Muscles
Rectus Abdominis: This is a long, paired muscle, found either side of the midline in the abdominal wall. It is split into two by the linea alba.
Pyramidalis:

29. Muscles acting on the hip and femur
Anterior group
Posterior group
Adductors
Abductors

30. Anterior group It contains the following five muscles:
Sartorius: the longest muscle in the human body
Quadriceps: Rectus femoris, Vastus lateralis, Vastus intermedius, vastus medialis
Function: Knee Extensors and hip flexors

31. Anterior group of muscles
Iliopsoas group: Which consists of the psoas major and iliacus muscles.
Quadriceps femoris group: Which consists of the rectus femoris, vastus intermedius, vastus lateralis, and vastus medialis.

32. Gluteal Muscles Gluteus maximus:Largest, most posterior gluteal muscle
Produces extension and lateral rotation at hip
Tensor fasciae latae: Works with gluteus maximus
Stabilizes iliotibial tract
Gluteus medius and gluteus minimus:Originate anterior to gluteus maximus
Insert on trochanter

33. Abductors of thigh
Gluteus minimus: Abduction and medial rotation of thigh
Gluteus medius: Abduction and medial rotation of thigh
Gluteus maximus: External rotation and extension of hip joint
Chief anti gravity muscle

34. Posterior group Flexors of the Knee Hamstrings Biceps femoris
Semimembranosus
Semitendinosus

35. Posterior thigh

36. Adductors Located on medial side of the hip
Adductor magnus:Produces adduction, extension, and flexion
Adductor brevis: Hip flexion and adduction
Adductor longus: Hip flexion and adduction
Pectineus: Hip flexion and adduction
Gracilis: Hip flexion and adduction

37. Adductors

38. Muscles on the posterior compartment of leg
Four Muscles That Produce Extension (Plantar Flexion) at the Ankle
Gastrocnemius
Soleus
Fibularis (group)
Tibialis posterior

40. Gastronemius and Soleus
Posterior compartment of the leg.
Origin: femur
Insertion: Achilles tendon and inserts onto the posterior surface of the calcaneus or heel bone.
Function
Standing, walking, running and jumping.
Plantar flexing the foot at the ankle joint and flexing the leg at the knee joint.

41. Muscles of lateral compartment of leg
Fibularis longus
Fibularis brevis
Function: Plantar flexion and Eversion of the foot

43. Muscles in anterior compartment of leg
Tibialis anterior:
Origin: body of tibia
Insertion: medial cuneiform and first meta tarsal of foot
Function: Dorsi flexion and inversion of foot

44. Muscles acting on the feet
Muscles That Produce Extension at the Toes
Extensor digitorum longus
Extensor hallucis longus
Extensor retinacula fibrous sheaths
Muscles That Produce Flexion at the Toes
Flexor digitorum longus
Flexor hallucis longus
Oppose the extensors