IOTA 6 Flashcards
(21 cards)
What is the middle cervical segment?
C7
What is the white matter?
Located outside
Mylienated axons : they form a colon.
Axons travel either Rostral (^) or caudal (down)
What are axons in the CNS called?
Tracts
Found in the lateral column or ventral column (anterior)
White matter
Where is the dorsal column?
It’s in the dorsal segment of thE spinaL cord on the outside
Posterior
Most of the axons in the dorsal column are?
Sensory
Where is the Ventral median fissure located?
Function?
Anteriorly
Here the Anterior Spinal Cord Artery (ASCA) travels the entire ventral front of spinal cord
There is no artery in the Dorsal median septum
True or false
True
There are 2 Posterior spinal chord arteries
How do they differ from each other?
Right posterior spinal cord artery
Left posterior spinal cord artery
Arterial supply for dorsal area of spinal cord
What is the grey matter?
Neurones cell bodies
What is the Ventral horn?
Contains motor cell bodies
What is the dorsal horn?
Contains sensory cell bodies
What is the Intermediate zone?
Contains cell bodies
Where is the lateral horn found ?
In thoracic to lumbar segments of spinal cord
T1-L2
Here you find preganglionic cell bodies of the sympathetic nervous system
What do you find in the lateral horn?
Cell bodies of the sympathetic nervous system: preganglionic cell bodies are
Is there any cerebrospinal fluid (CBF) in the central canal?
No there isn’t
What is Spinal nerve?
It is mixed: sensory and motor axons travel here
What is the ventral root?
It’s peripheral nervous system
Contains motor axons
Motor cells bodies from ventral anterior and ventral horns send their axons out. These axons fuse together in the VENTRAL ROOT
What is the dorsal root?
Here you find the Dorsal root ganglia (DRG): group of cell bodies of the peripheral nervous system - sensory neutrons
What are PIMS?
Posterior intermediate septum
From C1-T4
Seen above T4\T5
What do efferent nerves innervate?
Effectors in Visceral organs Cardiac muscle Glands Skeletal voluntary muscles
White matter increases?
As you go rostral
