Advertisements
Advertisements
प्रश्न
What are the various sense organs in our body?
उत्तर
There are five sense organs in our body. They are the eyes, the ears, the nose, the tongue and the skin.
APPEARS IN
संबंधित प्रश्न
How are involuntary actions and reflex actions different from each other?
If we happen to touch a hot object unknowingly, we immediately pull back our hand. What is this type of action known as?
Explain the difference between of the following pair of terms :
cerebrum and cerebellum
When you smell a favourite food your mouth begins to water (that is, you secrete saliva). Write down what is the example of the smell of the food?
What is a reflex action? Explain with the help of an example.
Cerbellum, medulla and pons are the parts of :
(a) mid-brain
(b) hind-brain
(c) forebrain
(d) spinal cord
When we touch a hot plate unknowingly, then this heat is sensed by a receptor P present in our fingers. The receptor triggers and impulse in neuron Q which transmits the message to an organ R which is a part of the central nervous system. Here the impulse is passed on to a neuron S which in turn passes it to a yet another neuron T. The neuron T passes the impulse to a tissue U in our arm. The tissue U then contracts and pulls our hand away from the hot plate.
(a) What is the name of (i) receptor P (ii) neuron Q, and (iii) organ R?
(b) What is (i) neuron S, and (ii) neuron T?
(c) Name the tissue U.
(d) What name is given to the phenomenon in which hand is pulled away quickly from the hot plate?
(e) Name the effector in this whole process.
Put a tick mark (✓) against the correct alternative in the following statement:
The smell of good food causes watering of your mouth. It is a
State whether the following is
The sudden application of brakes without thinking
Give Reason:
The hand automatically shows the direction to turn a cycle without thinking.
