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प्रश्न
The olfactory receptors in humans are located in :
(a) eyes
(b) tongue
(c) ears
(d) nose
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उत्तर
(d) nose
The olfactory receptors which detect smell are located in the nose.
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संबंधित प्रश्न
What is the role of the brain in reflex action?
Explain the difference between of the following pair of terms :
receptor and effector
Give the various functions of brain.
Which of the following are cerebral reflexes?
(i) a person pulls away his hand on touching a hot object
(ii) a person spits out immediately when a fly enters his mouth while talking
(iii) A person walking bare foot lifts his foot at once on stepping on to a nail
(iv) A person's pupil contracts at once in the presence of bright light
(a) (i) and (ii) (b) (ii) and (iii) (c) (iii) and (iv) (d) (ii) and (iv)
One of the following gives the correct sequence of the components in a reflex arc. This is:
Differentiate between the following pair of terms:
Stimulus and impulse
what do we refer to in the nervous system when we say:
Natural and conditioned …………………
State whether the following is simple reflex, conditioned reflex or neither of the two.
Contraction of eye pupil
List in tabular form three distinguishing features between cerebrum and cerebellum.
State whether the following is
The sudden application of brakes without thinking
State whether the following is
Playing on the Keyboard
What type of reflex is the following?
Knitting and swimming
Give Technical Term:
The scientist, who conducted experiment on a dog to show conditioned reflex
Give Technical Term:
Response to a stimulus without the intervention of the will of an animal.
Complete the following sentence with appropriate Word
Which of the following is not a natural reflex action?
Reflex actions are mediated through ____________.
Which one of the following is not a simple reflex?
Which of the following is not involved in Knee-jerk reflex?
The diagram given below shows the internal structure of a spinal cord depicting a phenomenon. Study the diagram and answer the following questions.
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- 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.
