Peripheral Nerves (Lec 18) Flashcards
5 principal plexuses of peripheral nervous system
- cervical
- brachial
- lumbar
- sacral
- coccygeal
- 5 Peripheral Nerve branches of the brachial plexus
- Axillary nerve
- Musculocutaneous nerve
- Radial nerve
- Median nerve
- Ulnar nerve
2 peripheral nerve branches of the Lumbar plexus
- Femoral nerve
- Obturator nerve
Peripheral nerve that arises from sacral plexuses
- Sciatic nerve
What is A
Posterior ramus
What is B
Anterior ramus
What is C
Rami communicates
When the spinal nerves emerge from the intervertebral fomamina they divide into 3 branches:
- Posterior ramus
(Sensory & motor to posterior trunk) - Anterior ramus
(sensory & motor to anterolateral trunk & limbs) - Rami communicates
(Axons associated w/ autonomic nervous system)
Peripheral nerves are derived from various combinations of ______.
Spinal nerves
What is a plexus
Complex network of spinal nerves that give rise to peripheral nerves
Sensory/ motor distribution of Brachial plexus
S: upper limb
M: upper limb
Sensory/motor distribution of lumbar plexus
S: abdomen, genitals, lower limb
M: abdomen, lower limb
Sensory/ motor distribution of sacral plexus
S: genitals, lower limb
M: perineum, lower limb
Sensory/motor distribution of coccygeal plexus
S: coccygeal region
M: none
Sensory/ motor distribution of cervical plexus
S: head, neck, upper chest
M: anterior neck, diaphragm
Sensory/Motor distribution of Axillary nerve
S: skin of upper lateral & posterior arm
M: deltoid & Teres minor
Sensory/ Motor distribution of Musculocutaneous nerve
S: skin of lateral forearm
M: anterior army muscles
Sensory/motor distribution of Radial nerve
S: skin of lower lateral & posterior arm and posterior forearm and posterolateral hand
M: posterior arm & forearm muscles
Sensory/Motor distribution of Median nerve
S: skin of the anterolateral hand
M: anterior forearm muscles & hand muscles
Sensory/Motor distribution of Ulnar nerve
S: skin of the medial hand
M: anterior forearm muscles & hand muscles
*funny bone *
Sensory/Motor distribution of the Femoral nerve
S: skin of the anterior thigh and skin of medial thigh & medial leg/foot
M: anterior thigh muscles
Sensory/Motor distribution of Obturator nerve
S: skin of the medial thigh
M: medial thigh muscles
Sensory/Motor distribution of
Terminal branches of the sciatic nerve
- tibial nerve
- superficial fibular nerve
- deep fibular nerve
Sensory/Motor distribution of the Sciatic nerve
S: none
M: posterior thigh muscles
Sensor/Motor distribution of Tibial nerve
S: skin of the plantar surface of the foot
M: posterior leg muscles & foot muscles
Sensory/Motor distribution of the superficial fibular nerve
S: skin of the lower lateral leg & dorsal surface of foot
M: lateral leg muscles
Sensory/Motor distribution of the Deep Fibular nerve
S: skin between the 1st & 2nd toes
M: anterior leg muscles
Sensory location of the Axillary nerve
A
Sensory location for the Radial nerve
B
Sensory location for the Ulnar nerve
C
Sensory location for the Median nerve
D
Sensory location of the femoral nerve
B
Sensory location of the Tibial nerve
E
Sensory location of the Superficial Fibular nerve
C
Sensory location of the Deep Fibular nerve
D
