Quiz 4-Muscles Of Lower Leg And Feet Flashcards Preview

Anatomy > Quiz 4-Muscles Of Lower Leg And Feet > Flashcards

Flashcards in Quiz 4-Muscles Of Lower Leg And Feet Deck (23):
1

Tibialis Anterior

Origin: Lateral Condyle of Tibia, Lateral Surface of Tibial Shaft, Interosseus Membrane
Insertion: Medial and Plantar surfaces of the Base of 1st Metatarsal and Cuneiform
Action: Dorsiflexion of Ankle and Invertor of Foot
Nerve: Deep Peroneal Nerve
Blood Supply: Anterior Tibial Artery

2

Extensor Digitorum Longus

Origin: Lateral Condyle of Fibula, Medial Fibular Shaft surface, upper part of Interosseus Membrane
Insertion: Dorsum of Middle and Distal Phalanges of Digits 2-5
Action: Extend toes 2-5 and Dorsiflexes Ankle
Nerve: Deep Peroneal Nerve
Blood Supply: Anterior Tibial Artery

3

Extensor Hallucis Longus

Origin: Anterior Surface of Fibula and Interosseus Membrane
Insertion: Base and Dorsal surface of Distal Phalanx of Great Toe
Action: Extends Great Toe and Dorsiflexes Ankle
Nerve: Deep Peroneal Nerve
Blood Supply: Anterior Tibial Artery

4

Fibularis Tertius (Peroneus Tertius)

Origin: Medial Fibular Shaft surface
Insertion: Dorsal Surface of base of 5th Metacarpal
Action: Dorsiflex, Evert, and Abduct the Foot
Nerve: Deep Peroneal Nerve
Blood Supply: Anterior Tibial Arter

5

Fibularis Longus (Peroneus Longus)

Origin: Head of Fibula, Upper half of Lateral Fibular Shaft surface
Insertion: Plantar Posterolateral aspect of Medial Cuneiform and Lateral side of 1st Metacarpal Base
Action: Everts foot and Plantar Flexes Ankle; Also supports arch of the foot
Nerve: Superficial Peroneal Nerve
Blood Supply: Anterior Tibial and Peroneal Arteries

6

Fibularis Brevis (Peroneus Brevis)

Origin: Inferior Lateral Fibular Surface and Anterior and Posterior surfaces of the Intermuscular Septa
Insertion: Lateral Surface of Styloid Process of 5th Metacarpal Base
Action: Everts Foot and Plantar Flexes Ankle
Nerve: Superficial Peroneal Nerves
Blood Supply: Muscular Branches of Peroneal Artery

7

Gastrocnemius

Origin: Medial head- Posterior Nonarticular surface of Medial Femoral Condyle; Lateral Head- Lateral Surface of Femoral Lateral Condyle
Insertion: The Deep Tendon of Soleus which is the formation of the Achilles Tendon; Inserts on the Middle Third of Posterior Calcaneal Surface
Action: Powerful Plantar Flexor of Ankle
Nerve: Tibial Nerve
Blood Supply: A Sural Branch of the Popliteal Artery

8

Soleus

Origin: Posterior Aspect of Fibular Head, Upper quarter of Posterior Surface of Fibular, Middle Third of Medial Border of Tibial Shaft, and Posterior Surface of a Tendinous Arch Spanning the two sites of Bone Origin
Insertion: Unites with Gastrocnemius Aponeurosis to form the Achilles Tendon and inserting on posterior Calcaneus Surface
Action: Powerful plantar Flexor of Ankle
Nerve: Posterior Tibial, Peroneal, and Sural Arteries
Blood Supply:

9

Plantaris

Origin: Inferior Aspect of Lateral Supracondylar Line of Distal Femur
Insertion: Middle Third of Posterior Calcaneal Surface medial to Achilles Tendon
Action: Tibial Nerve
Nerve: Sural Arteries
Blood Supply:

10

Popliteal

Origin: Anterior Part of the Popliteal Groove on Lateral Surface of Lateral Femoral Condyle
Insertion: Posterior Surface of Tibia in a fan-like fashion, just Superior to the Popliteal Line
Action: Rotates Knee Medially and Flexes Leg on the Thigh
Nerve: Tibial Nerve
Blood Supply: Medial Inferior Genicular Branch of Popliteal Artery and Muscular Branch ofPosterior Tibial Artery

11

Flexor Hallucis Longus

Origin: Inferior 2/3 of Posterior Surface of Fibula and Lower part of Interosseus Membrane
Insertion: Plantar Surface of base of Distal Phalanx of Great Toe
Action: Flexes Great Toe, Helps Supinate Ankle, and is a very weak Plantar Flexor of Ankle
Nerve: Tibial Nerve
Blood Supply: Muscular Branch of Peroneal and Posterior Tibial Artery

12

Flexor Digitorum Longus

Origin: Posterior Surface of Tibia Distal to Politeal Line
Insertion: Plantar Surface of bases of 2-5 distal phalanges
Action: Flexes toes 2-5 and also helps in plantar Flexion of ankle
Nerve: Tibial Nerve
Blood Supply: Muscular branch of Posterior Tibial Artery

13

Tibialis Posterior

Origin: Posterior Tibia, Interosseus Membrane, and Proximal half of Posterior Fibula
Insertion: Tuberosity of Navicular Bone, All Cuneiforms, Cuboid, and bases of Metatarsals 2-4
Action: Plantarflexes Foot at Ankle and Inverts Foot
Nerve: Tibial Nerve
Blood Supply: Fibial Artery

14

Abductor Hallucis

Origin: Medial Tubercle of Tuberosity of Calcaneus, Flexor Retinaculum
Insertion: Medial side of Base of Proximal Phalanx of 1st Digit
Action: Abducts and Flexes 1st Digit
Nerve: Medial Plantar Nerve
Blood Supply: Medial Plantar and 1st Plantar Metatarsal Artery

15

Flexor Digitorum Brevis

Origin: Medial Tubercle of Tuberosity of Calcaneus
Insertion: Both Sides of Middle Phalangesof Digits 2-5
Action: Flexes Digits 2-5
Nerve: Medial Plantar Nerve
Blood Supply: Lateral Plantar Artery, Plantar Digital Artery, Arcuate Artery

16

Abductor Digiti Minimi

Origin: Middle and Lateral Tubercles of Tuberosity of Calcaneus
Insertion: Lateral Side of Base of Proximal Phalanx of 5th Digit
Action: Abducts and Flexes 5th Digit
Nerve: Lateral Plantar Nerve
Blood Supply: Medial-Lateral Plantar Artery, Plantar Metatarsal and Plantar Digital Arteries to 5th Digit

17

Quadratic Plantae

Origin: Medial and Lateral Sides of Plantar Surface of Calcaneus
Insertion: Posterolateral Edge of Flexor Digitorum Longus Tendon
Action: Corrects for Oblique Pull of Flexor Digitorum Longus Tendon and Assists in Flexion of Toes
Nerve: Lateral Plantar Nerve
Blood Supply: Medial and Lateral Plantar Arteries and Deep Plantar Arterial Arch

18

Lumbricals

Origin: Tendons of Flexor Digitorum Longus
Insertion: Medial Side of Dorsal Digits 2-5
Action: Flexes Proximal Phalanges at MTP Joint and Extends Phalanges at PIP and DIP Joints
Nerve: Medial Plantar Nerve (Medial) and Lateral Plantar Nerve (Lateral)
Blood Supply: Lateral Plantar Artery and Plantar Metatarsal Arteries

19

Flexor Hallucis Brevis

Origin: Plantar Surfaces of Cuboid and Lateral Cuneiform
Insertion: Both sides of base of Proximal Phalanx of 1st Digit
Action: Flexes Proximal Phalanx of 1st Digit
Nerve: Medial Plantar Nerve
Blood Supply: Medial Plantar Artery

20

Adductor Hallucis

Origin: Oblique Head- Bases of Metatarsals 2-4; Transverse Head- Ligaments of Metatarsophalangeal Joints of Digits 3-5
Insertion: Tendons of both heads Lateral to side of Base of Proximal Phalanx of 1st Digit
Action: Adducts 1st Digit and maintains Arch of Foot
Nerve: Deep Branch of Lateral Plantar Nerve
Blood Supply:

21

Flexor Digiti Minimi Brevis

Origin: Base of 5th Metatarsal
Insertion: Lateral Base of Proximal Phalanx of 5th Digit
Action: Flexes Proximal Phalanx of 5th Digit
Nerve: Superficial Branch of Lateral Plantar Nerve
Blood Supply: Lateral Plantar Artery, Plantar Digital Artery, Arcuate Artery

22

Plantar Interossei (3 Muscles)

Origin: Bases and Medial Sides of Metatarsals 3-5
Insertion: Medial Sides of Bases of Proximal Phalanges of Digits 3-5
Action: Adduct Digits and Flex Metatarsophalangeal Joint and Extend Phalanges
Nerve: Lateral Plantar Nerve
Blood Supply: Lateral Plantar Artery and Plantar Arch

23

Dorsal Interossei (4 Muscles)

Origin: Adjacent sides of Metatarsals 1-5
Insertion: Digit 1- Medial side of Proximal Phalanx of 2nd Digit; Digits 2-4- Lateral Sides of Digits 2-4
Action: Abduct Toes 2-4, Flex Metatarsophalangeal Joints, and Extend Phalanges
Nerve: Lateral Plantar Nerve
Blood Supply: Arcuate Artery, Dorsal and Plantar Metatarsal Arteries