36
1 The Muscles
1
The Muscles
2
Orbicularis oris
Zygomaticus
Figure 10.06
3
Masseter
Temporalis
Orbicularis oris
Buccinator
Figure 10.07
4
Platysma Trapezius
The Trapezius
Go to http://webanatomy.net/anatomy/muscle_actions.htm
For links to muscle locations and actions
5
Sternocleidomastoid
Mastoid process
Figure 10.09 a
Scalenes
6
Splenius capitus
Mastoid processFigure 10.09 b
7
Extensors of the Vertebral Column
Erector spinae
Quadratuslumborum
Semispinalis capitusLongissimus capitus
9
Internal intercostalsExternal intercostals
10
The DiaphragmRadially arranged fibers
Enlarges thorax in restful inspiration.
Figure 10.10
11
Rectus abdominus
Transverse abdominus
Internal oblique
External oblique{
12
Deltoid
Coracobrachialis
Pectoralis major
Subscapularis
13
Subscapularis
Coracobrachialis
14
Latissimus dorsi Teres major
Anterior insertion
Figure 10.13 b
15
The Rotator Cuff
Subscapularis
Teresminor
Infraspinatus
Supraspinatus
16
Levator scapulae
Rhomboids: minormajor
Muscles Acting on the Scapula
20
Triceps brachii: lateral head long head
21
Medial epicondyle –origin of most lower
arm flexors
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris
Brachioradialis
Flexor retinaculum
22
Extensor carpi
radialislongus
Flexor digitorum
superficialis
Flexor digitorumprofundus
Lateral epicondyle
23
Extensor carpi radialislongusbrevis
Extensor digitorumExtensor carpiulnaris
Lateral epicondyle –origin of extensors
24
Quadratus lumborum
IliacusPsoas major{Iliopsoas
Figure 10.19 a
25
Gluteus maximus
Iliotibial tract
26
Iliotibial tract
Biceps femoris:
Long head
Short head
Semimembraneosus
Semitendinosus
The Hamstrings:
Knee Flexors
27
Gluteus maximus
Gluteus medius
Gluteus minimus
Piriformis
28
Tensor fascia latae
Iliotibial tract
Adductors: brevislongusmagnus
Sartorius Gracilis
29
Quadriceps femoris
Rectus femorisVastus lateralisVastus medialisVastus intermedius
30
Tibialis anteriorPeroneus (fibularis) longus
32
Synergists in Plantar Flexion
Peroneus (fibularis) longusGastrocnemius
Soleus
33
Peroneus (Fibularis) Longus
34
Peroneus (Fibularis) Brevis
35
Gastrocnemius(medial and lateral
heads)
Tendon of the calcaneus
36
Soleus
Plantaris
Gastrocnemius (cut)
