KERALA PSC / CDPO / BIOLOGY / SPINAL CORD / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY

 

KERALA PSC / CDPO / BIOLOGY / SPINAL CORD / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY

KERALA PSC / CDPO / BIOLOGY / SPINAL CORD / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY

·      The spinal cord controls reflex actions in human beings.

·      The length of the spinal cord is about 1 metre (3.3ft)

·      The spinal cord is a series of 31 sections called segments. Each segment giving rise to a pair of spinal nerves.

·      10 pairs originate from the brain stem. It contains sensory, mixed and motor nerves.

·      We lose consciousness if blood flow to the brain is cut off for more than five seconds.

·      There are 12 pairs of cranial nerves and 31 pairs of spinal nerves in man.

KERALA PSC / CDPO / BIOLOGY / SPINAL CORD / NOTES / OBJECTIVE QUESTIONS / STUDY MATERIALS / GENERAL KNOWLEDGE / KERALA PSC PRELIMINARY