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प्रश्न
Which of the following cannot be considered a receptor?
(a) ear
(b) nose
(c) muscle
(d) eye
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उत्तर
(c) Muscle
Sense organs contain receptors. The ear, nose and eye are sense organs, a muscle is not.
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संबंधित प्रश्न
Briefly explain the following terms : Reflex action
Name the function of cerebrum.
Explain the difference between of the following pair of terms :
receptor and effector
When you smell a favourite food your mouth begins to water (that is, you secrete saliva). Write down what is the example of the gland which is stimulated to secrete saliva.
What is a reflex action? Explain with the help of an example.
Which of the following helps in maintaining posture and balance of the human body?
Which of the following is not an involuntary action?
(a) vomiting
(b) chewing
(c) heart beat
(d) salivation
The part of brain which controls the involuntary action such as heart beat, breathing, blood pressure, etc. is :
(a) pons
(b) medulla
(c) cerebrum
(d) cerebellum
P is a cell (or group of cells) in the human body which is sensitive to a particular type of stimulus and conveys the messages to CNS through nerves Q. On the other hand, R is a part of the human body which can respond to a stimulus according to the instructions sent from the CNS through nerves S.
(a) What is P? Name five organs which contain cells (or group of cells) like P.
(b) Name the nerves Q.
(c) What is R? Give two examples of R.
(d) Name nerves S.
(e) How do messages travel through the nerves Q and S?
Complete the following statement by choosing the correct alternative from the choice given in bracker:
Reflex action is controlled by
(i) brain (ii) spinal cord
(iii) autonomic (iii) peripheral nervous system
Two hungry boys (A and B) enter a restaurant and find a table decorated as follows:
Boy B starts salivating but not A. Explain the reason for this difference.
State whether the following is
The sudden application of brakes without thinking
What type of reflex is the following?
Solving mathematical sums
What type of reflex is the following?
Formation of goose-pimples in cold weather.
What type of reflex is the following?
Blinking of the eye
Mention, if the following statement is True or False
Reflex action involves brain
Mention, if the following statement is True or False
A reflex action is a spontaneous response to a stimulus.
Mention, if the following statement is True or False
Reflex action is a unit of nervous action
Categorise the following under stimulus and response.
Seeing a green light turning into red at a road crossing before applying the brakes.
