PHYSIOLOGY
CENTRAL NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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From the back of the hindbrain (medulla oblongata) to the back of the stomach or lumbar region
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From neck to vertebral column
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From head to back of the stomach
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From head to tail
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Detailed explanation-1: -The spinal cord begins at the bottom of the brain stem (at the area called the medulla oblongata) and ends in the lower back, as it tapers to form a cone called the conus medullaris.
Detailed explanation-2: -In humans, the spinal cord begins at the occipital bone, passing through the foramen magnum and then enters the spinal canal at the beginning of the cervical vertebrae. The spinal cord extends down to between the first and second lumbar vertebrae, where it ends.
Detailed explanation-3: -The spinal cord extends from the foramen magnum where it is continuous with the medulla to the level of the first or second lumbar vertebrae. It is a vital link between the brain and the body, and from the body to the brain. The spinal cord is 40 to 50 cm long and 1 cm to 1.5 cm in diameter.
Detailed explanation-4: -The spinal cord is a long, thin tubular structure which is an extension of the medulla oblongata, the last part of the brain. It extends all the way down to the bottom of the spine. It is an integral part of the central nervous system and it consists of 31 pairs of nerves. It’s primarily responsible for reflex actions.