muscles of the lower extremity anatomy visual guide
DESCRIPTION
Muscles of the Lower Extremity Anatomy Visual Guide This is a visual guide I created as a laboratory study resource for my BIOL 121 Anatomy and Physiology I students on the muscles of the lower extremity. Credits: All photography, text, and labels by Rob Swatski, Associate Professor of Biology, Harrisburg Area Community College - York Campus, York, PA. Email: [email protected] This work bears an Attribution-Noncommercial Share Alike Creative Commons license, and is also available as individual pages (.jpg) on my Flickr site: http://www.flickr.com/photos/rswatskiTRANSCRIPT
![Page 1: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/1.jpg)
The Muscles of the Lower Extremity
- A Visual Guide -
Anatomy & Physiology I
BIOL 121
Rob Swatski
Associate Professor of Biology
HACC - York Campus
![Page 2: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/2.jpg)
Gluteus maximus
Extends and laterally rotates thigh; adducts the hip 2
![Page 3: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/3.jpg)
Gluteus medius
Medially rotates thigh;
abducts hip 3
![Page 4: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/4.jpg)
Gluteus medius
4
![Page 5: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/5.jpg)
Gluteus minimus
Medially rotates thigh; abducts hip 5
![Page 6: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/6.jpg)
Tensor fasciae latae
Abducts, medially rotates, and flexes thigh; stabilizes hip 6
![Page 7: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/7.jpg)
Tensor fasciae latae
7
![Page 8: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/8.jpg)
Piriformis
Abducts and
laterally rotates
thigh at hip 8
![Page 9: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/9.jpg)
Gemellus superior
Laterally rotates thigh at hip 9
![Page 10: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/10.jpg)
Obturator internus
Abducts and laterally rotates thigh at hip 10
![Page 11: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/11.jpg)
Gemellus inferior
Laterally rotates thigh at hip 11
![Page 12: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/12.jpg)
Psoas major
Flexes thigh at hip; flexes vertebral
column 12
![Page 13: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/13.jpg)
Psoas major
13
![Page 14: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/14.jpg)
Psoas major
14
![Page 15: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/15.jpg)
Iliacus
Flexes thigh at hip 15
![Page 16: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/16.jpg)
Pectineus
Adducts and flexes thigh at hip 16
![Page 17: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/17.jpg)
Adductor longus
Adducts and flexes thigh at hip; assists
in medial rotation 17
![Page 18: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/18.jpg)
Adductor magnus
Adducts and extends thigh at hip; assists in
medial rotation 18
![Page 19: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/19.jpg)
Gracilis
Adducts thigh at hip and flexes leg at
knee; assists in medial rotation 19
![Page 20: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/20.jpg)
Gracilis
20
![Page 21: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/21.jpg)
Gracilis
21
![Page 22: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/22.jpg)
Sartorius
Flexes, abducts, and laterally
rotates thigh at hip; flexes knee 22
![Page 23: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/23.jpg)
Rectus femoris
Extends leg at knee and flexes thigh at
hip; part of the quadriceps group 23
![Page 24: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/24.jpg)
Vastus medialis
Extends leg at knee; part of the
quadriceps group 24
![Page 25: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/25.jpg)
Vastus medialis
25
![Page 26: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/26.jpg)
Vastus lateralis
Extends leg at knee; part of the
quadriceps group 26
![Page 27: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/27.jpg)
Biceps femoris
Flexes leg at knee and extends thigh at hip;
belongs to the hamstring group 27
![Page 28: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/28.jpg)
Biceps femoris
28
![Page 29: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/29.jpg)
Semitendinosus
Flexes leg at knee and extends thigh at hip; belongs to the hamstring group 29
![Page 30: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/30.jpg)
Semimembranosus
Flexes leg at knee and extends thigh at hip; belongs to the hamstring group 30
![Page 31: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/31.jpg)
Gastrocnemius
Plantar flexion of ankle 31
![Page 32: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/32.jpg)
Gastrocnemius
32
![Page 33: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/33.jpg)
Soleus
Plantar flexion of ankle 33
![Page 34: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/34.jpg)
Soleus
34
![Page 35: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/35.jpg)
Soleus
35
![Page 36: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/36.jpg)
Flexor digitorum longus
Flexes lateral four toes; plantar
flexion and inversion of foot 36
![Page 37: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/37.jpg)
Flexor hallucis longus
Flexes great toe; plantar flexion and
inversion of foot 37
![Page 38: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/38.jpg)
Tibialis anterior
Dorsiflexion of foot at ankle;
inversion of foot 38
![Page 39: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/39.jpg)
Extensor digitorum longus
Extends lateral four toes;
dorsiflexion of ankle and
eversion of foot 39
![Page 40: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/40.jpg)
Extensor digitorum longus
40
![Page 41: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/41.jpg)
Fibularis (Peroneus) longus
Plantar flexion and eversion of foot;
stabilizes lateral ankle and arch of foot 41
![Page 42: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/42.jpg)
Fibularis (Peroneus) longus
42
![Page 43: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/43.jpg)
Fibularis (Peroneus) longus
43
![Page 44: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/44.jpg)
Fibularis (Peroneus) brevis
Plantar flexion and eversion of foot 44
![Page 45: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/45.jpg)
Fibularis (Peroneus) brevis
45
![Page 46: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/46.jpg)
Fibularis (Peroneus) brevis
46
![Page 47: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/47.jpg)
47
INDEX
Adductor longus: 17
Adductor magnus: 18
Biceps femoris: 27-28
Extensor digitorum longus: 39-40
Fibularis (Peroneus) brevis: 44-46
Fibularis (Peroneus) longus: 41-43
Flexor digitorum longus: 36
Flexor hallucis longus: 37
Gastrocnemius: 31-32
Gemellus inferior: 11
Gemellus superior: 9
Gluteus maximus: 2
Gluteus medius: 3-4
Gluteus minimus: 5
Gracilis: 19-21
Iliacus: 15
Obturator internus: 10
Pectineus: 16
Piriformis: 8
Psoas major: 12-14
Rectus femoris: 23
Sartorius: 22
Semimembranosus: 30
Semitendinosus: 29
Soleus: 33-35
Tensor fasciae latae: 6-7
Tibialis anterior: 38
Vastus lateralis: 26
Vastus medialis: 24-25
![Page 48: Muscles of the Lower Extremity Anatomy Visual Guide](https://reader034.vdocuments.mx/reader034/viewer/2022050701/545bd084af7959755d8b61b7/html5/thumbnails/48.jpg)
Credits All photographs and labels by Rob Swatski, 2009-2012
http://robswatski.virb.com
This work bears an Attribution-Noncommercial Share Alike Creative Commons license.
Visit my website for more Anatomy study resources!
http://www.flickr.com/photos/rswatski
48
Comments? Feedback? Please email me at [email protected]