Advertisements
Advertisements
प्रश्न
‘A’ is a cylindrical structure that begins from the lower end of the medulla and extends downwards. It is enclosed in bony cage ‘B’ and covered by membranes ‘C’. As many as ‘D’ pairs of nerves arise from the structure ‘A’.
(i) What is A?
(ii) Name (a) bony cage ‘B’ and (b) membranes ‘C’
(iii) How much is D?
उत्तर
- A is the spinal cord.
- (a) Bony cage is Vertebral column
(c) is Meninges - D is 31 pairs of spinal nerves.
APPEARS IN
संबंधित प्रश्न
Draw a labelled diagram of the following:
Brain
Renal cortex and Renal medulla [Parts of the nephrons present]
Draw neat and labelled diagrams of a myelinated neuron
Name the following :
The layer of the eyeball that forms the transparent Cornea
Mention the exact location of Epididymis
Mention the exact location of Malleus
With the help of a suitable diagram describe the structures of a neuron.
Fill in the blank:
The neurons carrying impulses from the brain to the muscles are called _______________________.
Answer the following questions briefly:
How are the cytons and axons placed in the brain and the spinal cord?
At the end of repolarization, the nerve membrane gets hyperpolarized. Why?
______ carries the impulse towards the cell body.
Classify neurons based on their structure.
Identify the INCORRECT statement regarding multipolar neuron.
Which nerves transmit impulses from the central nervous system towards muscle cells?
Which part of a nerve cell contains a nucleus?
Why is the flow of signals in a synapse from axonal end of one neuron to dendritic end of another neuron but not the reverse?
Identify the parts of a neuron which help the nerve impulse to travel away from the cell body.
The mammalian nervous system uses both electrical and chemical means to send signal via neurons. Which part of the neuron receives impulses?
Nissl's granules are found in the cytoplasm of ______.
