All of the following are true for spinal cord, except:

Appeared in: IGNOU PB Bsc Entrance-2022

Explanation

This statement is incorrect because the spinal cord does not begin at the midbrain.
The spinal cord is a continuation of the medulla oblongata, the most inferior part of the brainstem.
Its anatomical starting point is the foramen magnum, a large opening at the base of the skull.
While it does end in the lumbar region (specifically around L1-L2), the starting point mentioned in the option is wrong, making the entire statement false.

Option A: This is a true statement. The spinal cord contains descending motor tracts that carry signals from the brain to effector organs like muscles and glands throughout the body.
Option B: This is a true statement. The spinal cord contains ascending sensory tracts that transmit information from sensory receptors in the body up to the brain for processing.
Option D: This is a true statement. The spinal cord acts as an integration center for simple reflexes (reflex arcs), allowing for rapid responses to stimuli without immediate involvement of the brain.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Anatomy and function of the spinal cord as background academic context rather than a clinical decision trigger.
Understanding the precise anatomy of the spinal cord is critical for diagnosing and managing spinal cord injuries (SCIs). The vertebral level of the injury determines the extent of motor and sensory function loss.
For example, an injury in the cervical region can lead to quadriplegia (paralysis of all four limbs), while an injury in the lumbar region may only affect the legs (paraplegia).
Nurses must be able to assess the level of injury to anticipate complications, plan care, and educate the patient and family about the prognosis.

How to Approach the Question

First, identify that the question uses the word 'except'. This means you are looking for the one statement that is FALSE.
Read the stem of the question to identify the main topic: the spinal cord.
Carefully evaluate each option, recalling the basic anatomy and functions of the spinal cord.
Option A: Is relaying messages from the brain a function? Yes (motor function). This is true.
Option B: Is passing messages to the brain a function? Yes (sensory function). This is true.
Option C: Does it begin at the midbrain? No, it begins at the medulla oblongata. This statement is false.

Concept Tested & Keywords

Concept Tested: Anatomy and function of the spinal cord.
Stem keywords: spinal cord, true, function
Lead-in keywords: except
Negative lead-in flag: This is a negative-lead-in question asking for the INCORRECT statement.

QcGBOurj2it8ngSavDP0JZ

E6 Anatomy Grays 43e Vol 1 Part 3 pp. 29-31, 64-66

Practise the full IGNOU PB Bsc Entrance-2022

Attempt every question from this paper in a timed mock, then review the full solution for each one.