UE: Neurology Flashcards
Cervical Plexus is comprised of the Anerior Rami of what?
Anterior Rami of C1-C4
What major nerve comes out of the cervical plexus?
What does it innervate?
Supraclavicular N. (C3 and C4)
Skin over neck and shoulder
Has: Lateral, Middle, Medial Branches
What Anterior Rami are associated with the Brachial Plexus?
Anterior Rami of C5-T1
What causes Erb-Duchenne Palsy or “Waiter’s Tip” position?
What part of the Brachial plexus is damaged?
How do they present?
Increasing the angle between the Neck and Shoulder that causes the spinal roots rupturing off the spinal cord
Upper plexus like C5 and C6
Adducted and medially rotated arm with extended elbow
What causes Klumpke paralysis?
What part of the brachial plexus is damaged?
How do they present?
Increasing the angle between the trunk and the upper limb
Inferior portion of the brachial plexus
Causes “Claw hand” when trying to make a fist
Prolonged periods of working with the upper arm extended over the head results in pain radiating down the arm, loss of sensation, and tingling of the arms, and weakness of the hands. This form of activity occurs due to compression of what part of the brachial plexus?
compression of the Cords of the brachial plexus
Blunt forced trauma can render the anterior brachial muscles paralyzed due to injury of what N.?
Musculocutaneous N.
Atrophy of the Deltoid M. and loss of sensation over the superolateral Arm where the superior lateral branch cutnaeous N. exists, is caused by injury to what N.?
Axillary N.
Ape’s Hand is the presentation of the Adducted Thumb and Thenar Eminance atrophy is caused by injury to what nerve?
Injury to this nerver at the elbow inhibits flexion of what 2 digits also known as Hand of Benediction?
Median N.
Flexion of 2nd and 3rd digits
What are the 4 places where the Ulnar N. can be injured?
What is the result of the injury to the Ulnar N. in these places?
Posterior to Medial Humeral Epicondyle
Cubital Tunnel (b/w Flexor carpi ulnaris M heads)
Wrist
Hand
Loss of sensory and motor control in the hand or forming “claw hand” when trying to make a fist
When pressure is applied to the Hamulus of the Hamate B. , like when riding a bike what N/ can be compressed?
Describe Handlebar Neuropathy presentation?
Ulnar N.
Sensory loss on the medial side of the hand
Weakness of intrinsic hand muscles
Impairment of elbow extension and thumb ABduction and extension is called wrist drop. Injury to what nerve causes wrist drop?
Radial N.
Roots of the brachial plexus travel between what 2 muscles?
What artery do they travel with?
Anterior and Middle Scalene
Subclavian A.
The Trunks of the brachial plexus travel anteriorly over what structure?
1st rib under the clavical
What 2 nerves comes off the Roots of the brachial plexus?
What do they supply?
Dorsal Scapular N: Rhomboids and Levator Scapulae M.
Long Thoracic N.: Serratus Anterior M.
