BIOS252 - Session 2 Exam 2
2026 Exam Questions and
Answers | 100% Pass
Structure and Function of the Spinal Cord - 🧠 ANSWER ✔✔Carries
information to/from the brain and processes reflexes.
- (conduction, neural integration, locomotion & reflexes)
3 protective layers of the CNS - 🧠 ANSWER ✔✔Bone (skull & vertebrae),
Meninges, CSF
,Vertebrae - 🧠 ANSWER ✔✔Bones that protect the spinal cord.
CSF - 🧠 ANSWER ✔✔Cerebrospinal fluid cushioning the spinal cord.
Meninges - 🧠 ANSWER ✔✔Three protective layers surrounding the spinal
cord. (Dura, Arachnoid, Pia Mater)
epidural space - 🧠 ANSWER ✔✔adipose tissue and network of veins in the
space between vertebrae and spinal dura mater
Dura Mater - 🧠 ANSWER ✔✔Outer, thickest layer of the meninges.
Arachnoid Mater - 🧠 ANSWER ✔✔Middle layer, attached to the dura mater.
Sub-arachnoid Space - 🧠 ANSWER ✔✔CSF-filled space for lumbar
punctures.
Pia Mater - 🧠 ANSWER ✔✔Innermost layer, directly on the brain's surface.
What are the 3 extensions of dura mater? - 🧠 ANSWER ✔✔Falx cerebri,
falx cerebelli, tentorium cerebelli
falx cerebri - 🧠 ANSWER ✔✔separates the two hemispheres of the
cerebrum
, falx cerebelli - 🧠 ANSWER ✔✔separates the two hemispheres of the
cerebellum
tentorium cerebelli - 🧠 ANSWER ✔✔separates cerebrum from cerebellum
What are the Ventral spaces of the cerebrospinal fluid? - 🧠 ANSWER ✔✔§
Lateral ventricle (x2)
§ Third ventricle
§ Fourth ventricle
How long is the spinal cord? - 🧠 ANSWER ✔✔16.5-18inches
What are the two thickest parts of the spine? - 🧠 ANSWER ✔✔- Cervical
enlargement—nerves to upper limb
- Lumbosacral enlargement—nerves to pelvic region and lower limbs
What are the Several Distinct Region of the spinal cord - 🧠 ANSWER ✔✔1.
Cervical: enlargement that happens due to the sensory and motor neurons
going to and from the upper extremities.
2. Thoracic
3. Lumbar: enlargement that happens due to the sensory and motor
neurons going to and from the lower extremities.
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
3
2026 Exam Questions and
Answers | 100% Pass
Structure and Function of the Spinal Cord - 🧠 ANSWER ✔✔Carries
information to/from the brain and processes reflexes.
- (conduction, neural integration, locomotion & reflexes)
3 protective layers of the CNS - 🧠 ANSWER ✔✔Bone (skull & vertebrae),
Meninges, CSF
,Vertebrae - 🧠 ANSWER ✔✔Bones that protect the spinal cord.
CSF - 🧠 ANSWER ✔✔Cerebrospinal fluid cushioning the spinal cord.
Meninges - 🧠 ANSWER ✔✔Three protective layers surrounding the spinal
cord. (Dura, Arachnoid, Pia Mater)
epidural space - 🧠 ANSWER ✔✔adipose tissue and network of veins in the
space between vertebrae and spinal dura mater
Dura Mater - 🧠 ANSWER ✔✔Outer, thickest layer of the meninges.
Arachnoid Mater - 🧠 ANSWER ✔✔Middle layer, attached to the dura mater.
Sub-arachnoid Space - 🧠 ANSWER ✔✔CSF-filled space for lumbar
punctures.
Pia Mater - 🧠 ANSWER ✔✔Innermost layer, directly on the brain's surface.
What are the 3 extensions of dura mater? - 🧠 ANSWER ✔✔Falx cerebri,
falx cerebelli, tentorium cerebelli
falx cerebri - 🧠 ANSWER ✔✔separates the two hemispheres of the
cerebrum
, falx cerebelli - 🧠 ANSWER ✔✔separates the two hemispheres of the
cerebellum
tentorium cerebelli - 🧠 ANSWER ✔✔separates cerebrum from cerebellum
What are the Ventral spaces of the cerebrospinal fluid? - 🧠 ANSWER ✔✔§
Lateral ventricle (x2)
§ Third ventricle
§ Fourth ventricle
How long is the spinal cord? - 🧠 ANSWER ✔✔16.5-18inches
What are the two thickest parts of the spine? - 🧠 ANSWER ✔✔- Cervical
enlargement—nerves to upper limb
- Lumbosacral enlargement—nerves to pelvic region and lower limbs
What are the Several Distinct Region of the spinal cord - 🧠 ANSWER ✔✔1.
Cervical: enlargement that happens due to the sensory and motor neurons
going to and from the upper extremities.
2. Thoracic
3. Lumbar: enlargement that happens due to the sensory and motor
neurons going to and from the lower extremities.
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
3
