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प्रश्न
One of the following gives the correct sequence of the components in a reflex arc. This is:
विकल्प
Receptors → Muscle → Sensory neuron → Motor neuron → Spinal cord
Receptors → Motor neuron → Spinal cord → Sensory neuron → Muscle
Receptors → Spinal cord → Sensory neuron → Motor neuron → Muscle
Receptors → Sensory neuron → Spinal cord → Motor neuron → Muscle
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उत्तर
Receptors → Sensory neuron → Spinal cord → Motor neuron → Muscle
Explanation:
The pathway taken by a nerve impulse in a reflex action is called reflex arc.
The correct sequence of the components in a reflex arc is given below:
Receptors → Sensory neuron → Spinal cord → Motor neuron → Muscle.
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संबंधित प्रश्न
Give three examples of reflex actions.
What are the various sense organs in our body?
Write the names of the regions in hindbrain. Give one function of each region.
What is the difference between a voluntary and an involuntary action? Which kind of action is digestion? Explain your choice.
When you smell a favourite food your mouth begins to water (that is, you secrete saliva). Write down what is the example of the cells in your nasal passages which perceive the smell?
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.
Give the various functions of brain.
A cell (or group of cells) in a sense organ which is sensitive to a particular type of stimulus is called :
(a) interceptor
(b) effector
(c) receptor
(d) acceptor
Which of the following cannot be considered a receptor?
(a) ear
(b) nose
(c) muscle
(d) eye
The gustatory receptors of our body are in one of the following organs. This organ is :
a) ear
(b) nose
(c) tongue
(d) skin
The olfactory receptors in humans are located in :
(a) eyes
(b) tongue
(c) ears
(d) nose
Differentiate between natural reflex and conditioned reflex. Give examples to illustrate your answer.
Multiple choice question. Tick (✓) the correct choice:
Reflex actions occur under the control of
- brain
- medulla oblongata
- spinal cord
- cerebrum
Note the relationship between the first two words and suggest the suitable word/words for the fourth place.
Stimulus : Receptor :: Impulse : ______.
What is the difference between reflex action and voluntary action?
State whether the following is
Constriction of pupil
What type of reflex is the following?
Sweating in summer
Mention, if the following statement is True or False
Reflex action is a unit of nervous action
Give an example for conditioned reflexes.
What kind of reflex is cycling?
