Exam 4 (Neuro Upper Body) Flashcards
Cutaneous, also stands for?
Sensory in periphery
Rostral means?
Front of something
Caudal/caudad mean?
Posterior/Rear
The anterior rootlets send or receive what?
Send(efferent) motor
The posterior rootlets send or receive what?
Receive (afferent) sensory information
Starting from the rootlets map the path of the a nerve.
- Rootlets → Anterior & Posterior Root → Spinal nerve → Posterior Ramus → Medial & lateral cutaneous branches.
- Rootlets → Anterior & Posterior Root → Spinal nerve → Posterior Ramus → Anterior Ramus → Gray Ramus → White Ramus
The left sympathetic ganglion chain is more ____ & ___ than the right.
Posterior & lateral due to the aorta
The anterior ramus of a thoracic nerve splits into?
The lateral & anterior cutaneous branches
Where are the anterior thoracic cutaneous branches located?
Inferior to the rib
What innervates the lower ribcage?
The subcostal branches
How many spinal nerve pairs are there?
- 8 Cervical
- 12 Thoracic
- 5 Lumbar
- 5 Sacral
- 1 Coccygeal
C1 thru C7 nerves exit from?
Above each of their cervical vertebrae
Dermatome C8 innervates?
The pinky & medial part of the forearm
Dermatome C6 innervates?
The thumb & lateral part of forearm
Dermatome T1 innervates?
The elbow
What nerve/s innervates the lower back?
The clunial nerves
What nerve/s innervates the hip?
Iliohypogastric nerve of the lumbar plexus
What nerve innervates the Deltoid?
The axillary nerve
What nerve/s innervate someone’s flank?
The lateral branches of the anterior ramus
Accessory breathing muscles are innervated from where?
The cervical & thoracic nerves
What are the Nuchal nerves from superior to inferior?
- Greater Occipital nerve
- Lesser Occipital nerve
- 3rd Occipital nerve
What innervates the top of the shoulder?
The Supraclavicular nerve
Which nerve has a purely motor function & where does it come from?
- Suboccipital nerve
- Comes from C1
What dermatome does the Greater occipital nerve innervate? What about the 3rd occipital nerve?
- Dermatome C2
- Dermatome C3
What nerve innervates hearing?
Great Auricular nerve
Where do the the Nuchal nerves branch off from?
From the posterior (dorsal) ramus
Where does the Great Auricular nerve branch off from?
Anterior Ramus of the C2 nerve
Where does the Suboccipital nerve branch off from?
Posterior Ramus of C1
What is another name for Anterior
Ventral
What are the 4 nerves of the Cervical Plexus?
- Lesser Occipital nerve
- Great Auricular nerve
- Transverse cervical nerve
- Supraclavicular nerve
Where does the phrenic nerve branch off from?
The anterior Rami of C3, C4 & C5
The Cervical Plexus nerves branch off from?
The Anterior Rami of C2, C3 & C4
What is the sensory function of the Cervical plexus nerves?
Innervate the anterior & lateral neck
The phrenic nerve runs on top of what structure?
The anterior scalene muscle
Where does the Sternocleidomastoid muscle fasten to?
The Mastoid process & the clavicular head
What nerve innervates the Superior medial Deltoid?
The supraclavicular nerve
What exits thru the interscalene space?
The Anterior Rami
The Brachial Plexus is formed from which nerves?
C5 thru T1
Which Brachial Plexus nerve is very hard to block?
Musculocutaneous nerve
Delineate the Brachial Plexus course?
The 5 anterior Rami of C5 - T1 → 3 Trunks (Upper, Middle & Lower) → 3 Anterior & 3 Posterior Divisions → 3 Cords (Lateral, Posterior & Medial) → 2 Roots (Lateral & Medial) / 5 Terminal nerves
The Posterior Cord forms which two (per lecture) nerves?
Axillary & Radial nerves
The Lateral Cord divides into?
- Musculocutaneous nerve & Median nerve/Lateral Root
The Medial Cord divides into?
Medial Root & Ulnar nerve
The Lateral & Medial Roots combine to form the ___?
Median nerve
What are the 5 Terminal branches of the Brachial plexus?
Axillary, Radial, Musculocutaneous, Median, & Ulnar nerves
The Upper Trunk of the Brachial Plexus is formed from?
C5 & C6
The Middle Trunk of the Brachial Plexus is formed from?
C7
The Lower Trunk of the Brachial Plexus is formed from?
C8 & T1 nerves
Where does the Infraclavicular part start?
At the Brachial Plexus Cords
What cervical nerves innervate the Deltoid?
C5 & C6
What Anterior cutaneous regions does the Radial nerve innervate?
- Lateral superior thumb
- Lateral anterior biceps & triceps regions
What Posterior cutaneous regions does the Radial nerve innervate?
- Lateral Posterior Triceps
- Middle Posterior Forearm
- Posterior Thumb & 1st two fingers
The Radial nerve is supplied from which cervical/thoracic nerves?
- C5 - T1
- Radial has 6 letters C5 + T1 adds up to 6
The Musculocutaneous nerve is supplied from which cervical/thoracic nerves?
C5 - C7
What Anterior cutaneous regions does the Musculocutaneous nerve innervate?
Lateral Antebrachial area
The Ulnar nerve is supplied from which cervical/thoracic nerves?
C7 - T1
What Posterior cutaneous regions does the Ulnar nerve innervate?
- Medial Posterior Wrist
- Most of Last two finger
What Anterior cutaneous regions does the Ulnar nerve innervate?
- Medial Palmar surface of last two fingers
- Anterior medial wrist
The Median nerve is supplied from which cervical/thoracic nerves?
C6 - T1
What Posterior cutaneous regions does the Median nerve innervate?
- Posterior fingertips of first two digits
- Proper Palmar digital nerves
What Anterior cutaneous regions does the Median nerve innervate?
- Most of palm
- Anterior thumb
- Anterior surface of first two fingers
- Small section of wrist
