Nerves
Brachial Plexus
Cubital Fossa
Forearm
Muscles
100
All of the muscles of the anterior component of the arm are innervated by this nerve.
Musculocutaneous Nerve (C6)
100
These are the components of the brachial plexus.
Roots, Trunks, divisions, cords, branches
100
These two nerves are found within the Cubital Fossa.
Median Nerve, Radial Nerve (Deep and Superficial branches)
100
Muscles that are typically found in the anterior component of the forearm are involved in these two kinds of arm movement.
Flexion, Pronation
100
This muscle is found in the posterior component of the arm and innervated by this nerve.
Triceps Brachii and Radial Nerve (C7, C8)
200
The nerve and function of pronator teres.
Median Nerve/Pronates the Forearm
200
Waiter’s tip is commonly known as an injury that occurs in this nerve location.
Upper brachial plexus
200
List the lateral and medial borders of the cubital fossa
Brachioradialis🡪Lateral
Pronator Teres🡪 Medial
200
Name the membrane that separates the two aspects of the forearm (anterior/posterior)
Interosseous Membrane
200
This Muscle is found deep to the four superficial muscles of the anterior component of the forearm.
Flexor digitorum superficialis
300
A fractured medial epicondyle can cause injury to this nerve.
Ulnar Nerve
300
This injury is most likely to occur if an individual was hanging from a tree with one arm for a prolonged period of time.
Djerine-Klumpke Paralysis
300
Two intermuscular septa extend from brachial fascia and are attached to the?
Medial and lateral supracondylar ridges of the humerus
300
The tendons of the superficial and middle layers of the Anterior forearm cross where and how?
Cross the Wrist Joint Anteriorly
300
List the function of Flexor Digitorum Superficialis and Flexor Digitorum Profundus
FDS🡪 Flexes the middle phalanges
FDP🡪 Flexes the distal phalanges
400
This muscle has similar functions to the anterior aspect of the forearm but is found posterior. Name this muscle and list its function/innervation.
Brachioradialis/flexes elbow/Radial Nerve
400
This muscle is a very powerful flexor. Name this muscle, location and list the innervation.
Brachialis🡪 Found in the Anterior group of the Arm (Deep to coracobrachialis and biceps brachii) 🡪 Mucocutaneous Nerve
400
Name all the muscles found in the Anterior aspect of the forearm and divide them in superficial, middle, and deep
Pronator teres, Flexor carpi radialis, palmaris longus, flexor carpi ulnaris (Superficial)
Flexor digitorum Superficialis (Middle)
Flexor digitorum profundus, flexor pollicis longus, pronator quadratus
400
In the Anterior Antebrachial Region, there are two muscles that are not innervated by the radial nerve, what muscles are these and what veins are they innervated by?
Flexor Carpi Ulnaris (Ulnar Nerve)
Flexor Digitorum Profundus (Ulnar Nerve)
400
This muscle is very important in the throwing motion. List the name of the muscle and what other functions it is responsible for.
Triceps Brachii 🡪 Extension of the shoulder and elbow. When the arm is abducted, long head aids in adduction.
500
Name the two injuries that are involved in clawing of the hand, and what injured nerve results in these conditions.
Lower Brachial Plexus Injury found in Djerine-Klumpke Paralysis🡪 C8,T1
Ulnar Nerve Palsy injury found in the Ulnar Nerve🡪 C7,C8,T1
500
A baby when being delivered was stuck and due to the mother’s pelvic bone there was a lot of pressure on the child’s shoulder. What might this injury cause? What Spinal Nerves are affected? What Nerves from the Brachial Plexus are affected?
Erb-Duchene Paralysis/C5,C6/ Axillary Nerve (C5,C6), Suprascapular Nerve (C4,C5,C6), Radial Nerve (C5,C6,C7,C8)
500
Name all the boundaries and contents of the Cubital Fossa
Superficial to the cubital Fossa is the Median Cubital Vein and the Medial and Later cutaneous nerves of forearm following the basilic and cephalic veins (plus all the contents in the image below)
500
List the four muscles that are found in the superficial layer of the Forearm from lateral to medial
Pronator teres🡪 Flexor carpi radialis🡪 Palmaris Longus🡪 Flexor carpi ulnaris
500
An individual is brought into the emergency room after being found on the staircase to a bar. He was found with his arm stretched over one of the steps and he was sleeping on the extended arm. When brought into the ER, the individual shows signs of intoxication and it is evident that there was a large amount of pressure forced on the patients upper medial arm. The symptoms are wrist drop, abduction and adduction of the hand is impaired, and thumb movement is impaired. From the injuries that we have learned what could this be? And what nerve is affected?
Saturday Night Palsy/Crutch Palsy and the radial nerve is affected