Choose the correct answer from the options given below:

Arrange the following human spinal column divisions in correct sequence in descending order.
A. Thoracic
B. Coccygeal
C. Sacral
D. Cervical
E. Lumbar

Correct option is D

The human spinal column consists of five main divisions arranged in descending order from top to bottom:

-Cervical (D) – The uppermost section, consisting of 7 vertebrae (C1–C7), supports the head and neck.
-Thoracic (A) – The second section, containing 12 vertebrae (T1–T12), forms the upper and mid-back region.
-Lumbar (E) – This section includes 5 vertebrae (L1–L5) and supports most of the body's weight.
-Sacral (C) – Made up of 5 fused vertebrae (S1–S5), connecting the spine to the pelvis.
-Coccygeal (B) – The lowest section, commonly known as the tailbone, consisting of 3-5 fused vertebrae.

Thus, the correct descending order is:
Cervical → Thoracic → Lumbar → Sacral → Coccygeal
(D → A → E → C → B)

Information Booster:
Key Features of the Spinal Cord

1. Neural Communication: Transmits sensory (afferent) signals to the brain and motor (efferent) commands to the body.
2. Reflex Action: Processes reflexes independently through spinal reflex arcs for quick responses.
3. Sensory & Motor Integration: Dorsal roots handle sensory input, ventral roots control motor output.
4. Pain Modulation: Gate Control Theory explains how the spinal cord regulates pain signals before reaching the brain.
5. Neuroplasticity: Some recovery is possible after injury through rehabilitation and neural adaptation.
6. Autonomic Function: Regulates involuntary processes like heart rate and digestion via the autonomic nervous system.