Advertisements
Advertisements
Question
Mention any two examples of reflex action occurring in day-to-day life.
Very Short Answer
Advertisements
Solution
- Blinking of the eyelids on exposure to light
- Knee jerk
shaalaa.com
Is there an error in this question or solution?
Chapter 10: Nervous System - Exercises [Page 150]
APPEARS IN
RELATED QUESTIONS
Give the flow chart of a spinal reflex arc.
All the voluntary actions of our body are controlled by :
(a) cerebrum
(b) cerebellum
(c) pons
(d) medulla
One of the following gives the correct sequence of the components in a reflex arc. This is:
What is the difference between reflex action and voluntary action?
List in tabular form three distinguishing features between cerebrum and cerebellum.
What is a reflex action?
State whether the following is
Blinking
What type of reflex is the following?
Blinking of the eye
Why have reflex arcs evolved in animals?
The diagram given below shows the internal structure of a spinal cord depicting a phenomenon. Study the diagram and answer the following questions.
 |
- Name the phenomenon shown in the figure and define the same.
- Identify the parts labelled as 1 and 2. Write one functional difference between these two.
- Name the bony protective covering and the membranous protective covering of the spinal cord.
- Label the guidelines 3 and 4.
- How is the labelled part 3 different from part 4 with respect to its composition (part of neuron)?
- Give the technical term for the point of contact between the two nerve cells.
- Name the fluid filled inside the central canal of spinal cord.
- Name the term used for a small gap between two neurons.
- Give one example of a neurotransmitter.
- Draw a neat diagram of a nerve cell and label the parts: Perikaryon, Node of Ranvier, Myelin sheath and Axon terminals.
