Advertisements
Advertisements
प्रश्न
Given below is the transverse section of the spinal cord. Read the information below the diagram and fill in the blanks:
The spinal cord extends from the medulla oblongata of the brain and runs down through the whole length of the vertebral column. The spinal cord is covered by the meninges. It conducts impulses from the skin and muscles to the brain. It also conducts impulses from the brain to the muscles of the trunk and limbs.
The spinal cord is a part of the (a) ______ Nervous System. The grey matter in the picture given above consists of (b) ______ while the white matter consists of (c) ______. The spinal cord is concerned with the (d) ______ actions below the neck. (e) ______ is the bony structure that protects the spinal cord.
Advertisements
उत्तर
The spinal cord is a part of the (a) Central Nervous System. The grey matter in the picture given above consists of (b) cytons/nerve cell bodies while the white matter consists of (c) axons/nerve cell fibres. The spinal cord is concerned with the (d) reflex actions below the neck. (e) Vertebral column is the bony structure that protects the spinal cord.
APPEARS IN
संबंधित प्रश्न
Differentiate between following pair with reference to the aspect in bracket.
cerebrum and spinal cord (arrangement of cytons and exons of neurons).
Name the following:
Inability to speak.
Distinguish between the following pair of words:
Cranial nerve and spinal nerve
Distinguish between the following pair of words:
Motor and sensory nerve
Give one point of difference between the following on the basis of what is indicated:
Cerebrum and spinal cord. (Arrangement of neurons)
Spinal cord and sympathetic ganglion of autonomous nervous system are connected by ______________.
The diagram given below shows the internal structure of the spinal cord, depicting a simple reflex. Study the same and then answer the questions that follow:
(i) Name the parts numbered 1 to 5.
(ii) Using the letters of the alphabet shown in the figure indicate the direction in which an impulse enters and leaves the spinal cord.
(iii) What is the term given to the point of contact between two nerve cells?
(iv) What is meant by ‘simple reflex’ ? Give two examples of simple reflexes and name the stimuli too.
(v) How does the arrangement of nerve cells in the spinal cord differ from that in the brain?
Complete the following sentence with appropriate word :
The part of the central nervous system which responds to the reflex action is ________.
Which statement is correct regarding spinal nerves in man?
Explain the formation of a typical spinal nerve with the help of a neat labelled diagram.
