HSC_214_Lab_Neurons_Brain_and_Spinal_
z Cord_Objectives_Study_Guide_2025_2026
1. cell body (soma) - location: anterior gray horn (within the central nervous system)
- motor/e�erent, - function: houses the nucleus
sensory/a�erent
2. Axon (e�erent, af- - location: multipolar neurons outside the central nervous system
ferent) - function: carries motor information from the central nervous system to the
peripheral nervous system
3. dendrites - location: �bers projecting from cell bodies to adjacent neurons
- function: receives impulses from adjacent neurons
4. myelin - location: membranous coating of axons
- function: fatty sheath around the axon that increases the speed of impulses
5. nodes of ranvier - location: gaps in the myelin surrounding axons
- function: aids in the rapid conduction of impulses
, z
6. epidural space - description: space outside of the dura matter, but within the vertebral column
containing adipose tissue
- relationship: spinal cord only
7. dura mater outermost, thickest layer of the three meninges covering the brain and spinal cord
8. subdural space potential space between the dura and arachnoid mater
9. arachnoid mater - description: the thin, middle layer of the three meninges covering the brain and
spinal cord
- relationship: "spider web" like appearance
, z
10. subarachnoid - description: space between arachnoid and pia mater
space - relationship: contains cerebrospinal uid (CSF)
11. pia mater deepest layer of the meninges that lies directly on the surface of the brain and
spinal cord
12. superior sagittal - description: midline, unpaired, dural venous sinus along the superior border of
sinus falx cerebri
- relationship: drains the lateral surface of the cerebral hemispheres; terminates
the con uence of sinuses
z Cord_Objectives_Study_Guide_2025_2026
1. cell body (soma) - location: anterior gray horn (within the central nervous system)
- motor/e�erent, - function: houses the nucleus
sensory/a�erent
2. Axon (e�erent, af- - location: multipolar neurons outside the central nervous system
ferent) - function: carries motor information from the central nervous system to the
peripheral nervous system
3. dendrites - location: �bers projecting from cell bodies to adjacent neurons
- function: receives impulses from adjacent neurons
4. myelin - location: membranous coating of axons
- function: fatty sheath around the axon that increases the speed of impulses
5. nodes of ranvier - location: gaps in the myelin surrounding axons
- function: aids in the rapid conduction of impulses
, z
6. epidural space - description: space outside of the dura matter, but within the vertebral column
containing adipose tissue
- relationship: spinal cord only
7. dura mater outermost, thickest layer of the three meninges covering the brain and spinal cord
8. subdural space potential space between the dura and arachnoid mater
9. arachnoid mater - description: the thin, middle layer of the three meninges covering the brain and
spinal cord
- relationship: "spider web" like appearance
, z
10. subarachnoid - description: space between arachnoid and pia mater
space - relationship: contains cerebrospinal uid (CSF)
11. pia mater deepest layer of the meninges that lies directly on the surface of the brain and
spinal cord
12. superior sagittal - description: midline, unpaired, dural venous sinus along the superior border of
sinus falx cerebri
- relationship: drains the lateral surface of the cerebral hemispheres; terminates
the con uence of sinuses
