Lecture 10: Spinal Cord Pathways Flashcards
What 3 parts can the brain be divided into?
- Cerebrum
- Brainstem
- Cerebellum
What is included in the Brainstem?
The Midbrain, Pons and Medulla
What are the three embryological origins of the brain?
The Forebrain, Midbrain and Hindbrain
Which part of the brain originates from the Forebrain?
The Cerebrum
Which part of the brain originates from the Midbrain?
The midbrain
Which part of the brain originates from the Hindbrain?
The Pons, Medulla and Cerebellum
What is the spinal cord?
A cylindrical cable of pathways to and from brain and rest of the body
Where does the Spinal cord extend to and from?
The Base of the skull (medulla) to L1-L2 vertebrae
What are the two Plexuses of the Spinal cord?
Cervical (Brachial Plexus) and Lumbar (Lumbosacral Plexus)
What covers the Spinal Cord?
The Meninges
What is a the Central Canal?
A cerebrospinal fluid filled space that runs through the spinal cord
What are axons in the spinal cord known as?
Tracts
What is the spinal cord an extension of?
The Medulla
What is a Plexus?
When more than one nerve comes off the spinal cord and rejoins another nerve
Where does the Brachial Plexus extend?
C5 to T1
Where does the Lumbosacral Plexus serve?
The lower limbs
Which nerves are part of the lumbosacral plexus?
L1 - S4
What is the Central canal of the spinal cord continuous with?
The ventricles of the brain
How many pairs of Spinal Nerves are there?
31 Pairs
What is the name order of the nerves?
Cervical Thoracic Lumbar Sacral Coccygeal
How many Cervical nerves are there?
8
How many Thoracic Nerves are there?
12
How many Lumbar nerves are there?
5
How many Sacral Nerves are there?
5