Nervous System Flashcards
System works closely with nervous
Endocrine
How many spinal nerves
31
Where does spinal cord begin
Continuation of medulla oblongata
Conus medullaris
L1 and L2
End of spinal cord
Turns to “horse hairs”
Cauda equina
Carrying information after spinal cord ends
The “horse hairs”
Meninges
Membranes surrounding brain and spinal cord
Outermost layer
Dura mater(tough mother)
Middle meninx
Arachnoid mater
CSF
Cerebral spinal fluid (brain and spinal fluid)
In pia mater layer(innermost layer)
Dermatomes
Area of skin innervated by a single spinal nerve
Plexuses
Nerve rest stop(gathering of nerves): different areas are Cervical Brachial Celiac Lumbar Sacral Coccygeal
EEG
Confirm brain death
Cervical plexus
Serves head neck and diaphragm
Phrenic nerves
Arise from cervical plexus
Supplies diaphragm
Brachial plexus
Supplies shoulders and upper limbs
Lumbar plexus
Anterolateral abdominal wall
External genitalia
Part of lower limbs
Femoral and obturator nerve
Sacral plexus
Buttocks
Perineum
Part of lower limbs
Siatic nerve
