P2 ANATOMY Flashcards
anatomy of brachial plexus
how many cranial nerves are in the body
12 cranial nerves
how many spinal nerves are in the body
31 spinal nerves
Number of Cervical nerves
8
Number of thoracic nerves
12
Number of lumbar nerves
5
Number of sacral nerves
5
Number of coccygeal nerves
1 coccygeal nerve
Division of spinal nerve that supplies the back
dorsal ramus
Division of spinal nerve that supplies the anterolateral part of body & gives plexuses
ventral ramus
Network of nerve fibres that supplies muscles and skin of upper limb that
Begins at posterior triangle of the neck and extends into axilla is known as
brachial plexus
fixed type of brachial plexus is formed by which nerves
C5 , C6 ,C7,C8 & T1
PREfixed type of brachial plexus is formed by which nerves
C4 , C5,C6C,C7C,C8 ,T1
POSTfixed type of brachial plexus is formed by which nerves
C5,C6,C7,C8,T1 & T2
stages of brachial plexus
1- roots
2- trunks
3- divisions
4- cords
5- branches
site of root & trunks of BP
supraclavicular
site of divisions of BP
retro-clavicular
site of cords & branches of BP
infra-clavicular
upper trunk is made up of which root
C5 , C6
middle trunk is made up of which root
C7
lower trunk is made up of which root
C8 & T1
ant. division supplies which compartment of upper limb
Supplies ant. / flexor compartment of upper limb
post. division supplies which compartment of upper limb
Supplies post. / extensor compartment of upper limb
lateral cord is formed by fusion of
ant. Division of upper and middle trunk
medial cord is formed by fusion of
ant. Division of lower trunk
Posterior cord is formed by fusion of
post. Divisions of all trunks
dorsal scapular nerve root value
C5
dorsal scapular nerve supplies what muscles
2 rhomboids and levator scapulae
long thoracic nerve root value
C5,C6, C7
long thoracic nerve supplies what muscles
serratus anterior
Identify the nerve branch
long thoracic nerve
Identify the case shown
what is the nerve damage
winging of the scapula
due to long thoracic nerve injury
identify the nerve branch & what muscle does it supply
suprascapular
Supplies supraspintus& infraspintus
identify the muscle and its INNERVATION
subclavius muscle
innervated by subclavius nerve
subclavius nerve root value
C5 , C6
Lateral pectoral nerve root value
C5 , C6 ,C7
musculocutaneous nerve root value
C5,C6, C7
nerve that supplies BBC muscles
musculocutaneous nerve
Identify the nerve / root / structure
lateral root of median nerve
Identify the nerve & its root value
ulnar nerve
C7,C8, T1
mention the 5 branches of medial cord
1- medial pectoral nerve
2- ulnar nerve
3- medial root of median nerve
4- medial cutaneous nerve of the arm
5- medial cutaneous nerve of the forearm
Why ulnar nerve contains a branch from C7 although it is a branch of medial cord
often receives C7 fibres via a communicating branch from the lateral root of median nerve.
identify the hidden nerve branch
its root value
it supplies what muscle
Thoracodorsal nerve
C6,C7,C8
nerve to latissimus dorsi
mention the 5 branches of posterior cord
1- upper subscapular nerve
2- thoracodorsal nerve
3- axillary nerve
4- radial nerve
5- lower subscapular nerve
Identify the hidden nerve & its root value
axillary nerve
C5,C6
radial nerve root value
C5 ,C6 , C7 ,C8 , T1
Identify the shown deformity
what nerve is injured
wrist drop seen in radial nerve injury
site of ERB’s palsy
upper trunk
cause of injury in ERBs palsy point
1-fall on shoulder
2- overstretched head during labor
Clinical sign of ERBs palsy injury
waiter’s tip / policeman position
identify what is seen & due to what injury
dropping of shoulder
du eto accessory nerve injury
Procedure known as
Brachial plexus block
site of injury in KLUMPKE’S PARALYSIS
lower trunk
deformity seen in KLUMPKE’S PARALYSIS
claw hand
