Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
10 Cards in this Set
- Front
- Back
|
Anterior Tibial Artery (source, course)
|
Source: One of two terminal branches of the popliteal artery (the other being the posterior tibial artery). It comes off at a 90 degree angle just inferior to the popliteal fossa while the posterior tibial continues in the same trajectory as the popliteal artery.
Course: The anterior tibial artery passes from the posterior compartment to the anterior compartment through a gap in the superior part of the interosseous membrane. It is located between the tibialis anterior and the extensor digitorum longus. It changes its name at the ankle joint, midway between the malleoli, to the dorsalis pedis artery. |
|
|
Common Fibular (Peroneal) Nerve (origin, path, skin innervated, branches)
|
Origin: The lateral, smaller terminal branch of the sciatic nerve (the other being the tibial nerve); the bifurcation of the sciatic nerve is usually at the apex of the popliteal fossa; it has been shown that the short head of the biceps is supplied by the common fibular branch
Path: The common fibular nerve follows the medial border of the biceps femoris and then winds around the neck of the fibula going deep to the fibularis longus, where it divides into the deep and superficial fibular nerves. Muscle Innervated: Short head of biceps femoris Skin Innervated: None Branches: Superficial fibular nerve; deep fibular nerve; lateral sural cutaneous nerve |
|
|
Superficial Fibular (Peroneal) Nerve (origin, path, muscles innervated, skin innervated)
|
Origin: A terminal branch of the common fibular nerve, the other branch being the deep fibular nerve
Path: Arises between the fibularis longus and the neck of fibula and descends into the lateral compartment of the leg. Muscles Innervated (lateral compartment of the leg): -Fibularis longus -Fibularis brevis Skin Innervated: Cutaneous innervation to the inferior surface of the leg and dorsum of foot, except skin between the first and second digits |
|
|
Deep Fibular (Peroneal) Nerve (origin, path, muscles innervated, skin innervated)
|
Origin: A terminal branch of the common fibular nerve, the other being the superficial fibular (peroneal) nerve
Path: Arises between the fibularis longus and the neck of the fibula and passes into the anterior compartment where it accompanies the anterior tibial artery Muscles Innervated: Anterior compartment of the leg -Tibialis anterior -Extensor digitorum longus -Extensor hallucis longus -Extensor hallucis brevis -Fibularis tertius Skin Innervated: Cutaneous innervation to the skin between the first and second digits |
|
|
Fibularis (Peroneus) Longus Muscle (attachments, innervation, actions)
|
Proximal Attachment: Superior half of the fibula
Distal Attachments: 1st metatarsal and medial cuneiform Innervation: Superficial fibular nerve Actions: Eversion at the subtalar (talocalcaneal) joint and transverse tarasal joints; Weak plantarflexion at talocrural joint |
|
|
Fibularis (Peroneus) Brevis Muscle (attachments, innervation, action)
|
Proximal Attachment: Inferior half of fibula
Distal Attachment: 5th metacarpal Innervation: Superficial fibular nerve Action: Eversion at the subtalar (talocalcaneal) joint and transverse tarsal joints; Weak plantarflexion at the talocrural (ankle) joint |
|
|
Tibialis Anterior Muscle (attachments, innervation, actions)
|
Proximal Attachment: Lateral condyle and superior half of lateral surface of the tibia
Distal Attachment: Medial cuneiform and 1st metatarsal Innervation: Deep fibular nerve Actions: Dorsiflexion at the talocrural joint; Inversion at the subtalar joint and transverse tarsal joints |
|
|
Extensor Hallicus Longus Muscle (attachments, innervation, action)
|
Proximal Attachment: Middle part of the fibula
Distal Attachment: Distal phalanx of the big toe Innervation: Deep fibular nerve Action: Dorsiflexion at the ankle joint; Extension of the MP & IP joints of the big toe |
|
|
Extensor Digitorum Longus Muscle (attachments, innervation, actions)
|
Proximal Attachments: Lateral condyle of tibia and superior three fours of fibula
Distal Attachments: Middle and distal phalanges of lateral four digits Innervation: Deep fibular nerve Action: Dorsiflection at the ankle joint; extension at the MP, PIP, and DIP of lateral four toes |
|
|
Fibularis (Peroneus) Tertius Muscle (attachments, innervation, actions)
|
Proximal Attachment: Inferior third of fibula
Distal Attachment: 5th metatarsal Innervation: Deep fibular nerve Actions: Dorsiflexion at the talocrural joint; eversion at the subtalar joint and transverse tarsal joints |
