Which among the following statement is incorrect with respect to the spinal cord?

It extends from the medulla oblongata.

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It has an outer gray matter and an inner white matter.

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It acts as a link between the brain and the somatic organs of PNS.

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It is involved in controlling the basic reflex actions.

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Solution

The correct option is B It has an outer gray matter and an inner white matter.

Spinal cord is a cylindrical structure which lies in the neural canal of the vertebral column. They have protective layers similar to the brain and also contain the cerebrospinal fluid.

White matter which comprises of the myelinated axons, forms the outer layer of the spinal cord.

The gray matter which consists of cell bodies is located deep inside in the spinal cord.

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Similar questions

Identify the incorrect statement(s) regarding spinal cord of CNS.

1. Extends from medulla from occipital bone upto the first lumbar vertebrae.

2. Similar to brain has outer gray matter and inner white matter.

3. Acts as a link between brain and the somatic organs of PNS.

4. Controls basic reflex actions.

The (1)__ is the most important structure that acts as a relay between the body and the brain. It extends from (2)__ to the lower backbone. It has (3)__ matter in inner surface and (4)__ matter in the periphery.

Q. Assertion: Medulla oblongata causes reflex actions like vomiting, coughing and sneezing.
Reason: It has many nerve cells which control autonomic reflexes.

Which brain part covers a small area with numerous furrows and has outer cortex made up of gray matter?

The arrangement of white and gray matter in spinal cord is completely reverse to that of ___

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