Neurology Flashcards
Ventral
Anterior/ Motor/efferent
Dorsal
Posterior/Sensory/afferent
Ganglion
A collection of nerve cell bodies outside the CNS
The somatic Nervous system divides into…
Peripheral and Sciatic nerves
The Autonomic nervous system divides into…
Sympathetic and parasympathetic
What is the formation of a Spinal Nerve?
DORSAL
- Dorsal Gray horn of spinal cord
- Dorsal root with cell bodies (dorsal root ganglion)
- Splits into many dorsal rootlets
- Brings sensory information into CNS
- Dorsal Ramus (innervates the skin on posterior aspect of the body and deep intrinsic back muscles)
VENTRAL
- Ventral hron
- Ventral rootlets
- Ventral root
- Ventral ramus (innervates structures on the anterior and lateral aspects of the body
Purpose of the Neural Plexus
- intertwining network of nerves, derived from serval spinal nerves, give rise to peripheral nerves
- cervical
- brachial
- lumbar
- sacral
- coccygeal
Lumbar plexus includes…
Iliohypogastric nerve (L1)
Ilio-ingunal nerve (L1)
Genitofemoral nerve (L1,2)
Lateral cutaneous nerve of thigh (L2,3)
Obturator nerve (L2-4)
Lumbosacral Trunk (L4-5)
Femoral Nerve
Sacral Plexus includes…
- Superior gluteal nerve (L4-S1)
- Inferior gluteal nerve (L5-S2)
- Sciatic nerve (L4-S3)
- Posterior cutaneous nerve of thigh (S1-3)
- Pudendal nerve (S2-4)
What MUSCLES and REGION does the Femoral Nerve innervate?
iliacus
pectineus
sartorius
rectus femoris
vastus lateralis
vastus medialis
vastus intermedius
Articularis genu
Anterior hip and thigh
What MUSCLES and REGION does the Obturator Nerve innervate?
adductor longus
adductor brevis
adductor magnus
gracilis
obturator externus
Medial Thigh
What MUSCLES and REGION does the Sciatic Nerve innervate?
semitendinosis (t)
semimembranosus (t)
biceps femoris (long head) (t)
biceps femoris (short head) (f)
adductor magnus (t)
Posterior Thigh
