Arm And Anterior Forearm Flashcards
What are the compartments of the arm and forearm?
Anterior and posterior
What are the compartments of the hand?
Thenar, hypothenar, central, and adductor-interosseus
What is the brachial fascia?
Deep investing fascia of the arm
What is the intermuscular septa?
Extensions of the deep investing fascia that attach to the bone. Many of the deep vessels and several of the nerves are located in the intermuscular septa
Which muscles are in the anterior compartment? What is the major action?
Biceps brachii (long and short head)
Coracobrachialis
Brachialis
Major action is flexion
What innervates the anterior/flexor compartment of the arm?
Musculocutaneous nerve
How is the biceps brachii divided?
Into long and short
Long - from supraglenoid tubercle of scapula
Short - from coracoid process
Where does the biceps brachial attach?
Radial tuberosity distally
Where does the biceps brachial attach?
Radial tuberosity dismally
Which muscles are in the posterior compartment of the arm?
triceps brachii and anconeus
What is the major action of the posterior arm?
Extension at the elbow
What is the posterior arm innervated by?
Radial nerve
Where does the brachial artery reach?
Only major vessel that reaches the arm and perfuses the flexor compartment (anterior compartment)
What is the extensor compartment perfused by?
Posterior humeral circumflex artery and deep brachial artery
What forms the collateral circulation?
Collateral anastomoses and recurrent branches anastomose around the elbow
What is the cubical fossa?
Region bound by line drawn between medial and lateral humeral epicondyles
Pronator teres
Brachioradialis
Bicipital aponeurosis (extension of biceps brachii tendon forming roof of cubital fossa)
Describe Pronator teres
Superficial layer
Pronation of forearm
Median nerve
