Advertisements
Advertisements
प्रश्न
Differentiate between following pair with reference to the aspect in bracket.
cerebrum and spinal cord (arrangement of cytons and exons of neurons).
Distinguish between the following pair:
Cerebrum and spinal cord (arrangement of cytons and axons of neurons)
उत्तर
| Cerebrum | Spinal Cord |
| The outer layer of the cerebrum, known as the cerebral cortex, contains cytons (neuron cell bodies). Axons are located deeper within the cerebrum. | Cytons are located in the inner gray matter of the spinal cord, while axons are found on the matter itself. |
APPEARS IN
संबंधित प्रश्न
Name the following:
Inability to speak.
Where is this located?
Ganglia
Give Technical Term:
The brain and spinal cord together constitute the system known as.
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?
The diagram given below represents the spinal cord of a mammal, seen in a transverse section together with the nerves. Study the diagram and then answer the questions given below:
(i) Label the parts 1—8 indicated by guidelines.
(ii) What do the arrows indicate? What is the pathway indicated termed?
(iii) What type of nerve is shown in the diagram?
Identify the odd item from the following series of words.
Describe the structure of the spinal cord.
Spinal nerves are usually ______
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.
Mention where in the human body is the following located and state its main function:
Central canal
