Reflex Action
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Spinal cord is involved in reflex action. It is the processing unit for reflex actions because __________.
Spinal cord occupies more space in the body.
It can have more nerve connection.
All nerves from various parts of body meet at spinal cord before reaching brain.
All of these
- Interneurons
- Sensory neurons
- Motor neurons
- Peripheral neurons
Which of the following is a reflex action?
blinking of eyes
coughing
swallowing of bolus
all of these
Our body carries out reflex actions without the control of brain. Which other part of the nervous system is responsible for this?
Balance and equilibrium
Thinking and memory
Reflex actions
All the above
What is cerebral palsy?
- Interneurons
- Sensory neurons
- Motor neurons
- Peripheral neurons
Give an important characteristic of a muscle cell.
Why the nerve cell is so long?
Identify the given pathway and label A, B, C, and D.
Reflex arc, A - Receptor, B - Sensory neuron, C - Motor neuron, D - Relay neuron
Peripheral Nervous System, A - Electrical impulse, B - Sensory neuron, C - Motor neuron, D - Nerve ending
Neuromuscular junction, A - Cell body, B - Sensory neuron, C - Motor neuron, D - Axon
Central Nervous System, A - Electrical impulse, B - Sensory neuron, C - Motor neuron, D - Nerve ending
![](https://search-static.byjusweb.com/question-images/byjus/infinitestudent-images/ckeditor_assets/pictures/15161/content_spinal_cod.jpg)
- 1 - Receptor, 2 - Spinal cord, 3 - Sensory neuron, 4 - Afferent neuron, 5 - Interneuron, 6 - Effector
- 1- Spinal cord, 2 - Receptor, 3 - Sensory neuron, 4 - Interneuron, 5 - Motor neuron, 6 - Effector
- 1 - Spinal cord, 2 - Effector, 3 - Sensory neuron, 4 - Afferent neuron, 5 - Interneuron, 6 - Receptor
- 1 - Effector, 2 - Spinal cord, 3 - Sensory neuron, 4 - Afferent neuron, 5 - Interneuron, 6 - Receptor
Our body carries out reflex actions without the control of brain. Which other part of the nervous system is responsible for this?
Spinal Cord
- Brain
- Liver
- Heart
Reflex action in the body is controlled by ___________.
ANS
PNS
All of these
CNS
Playing harmonium without seeing its reeds is an example for reflex action.
True
False
The possible reason for evolution of reflex action in higher animals is:
Spinal cord has more efficiency than brain
Thinking process of brain is not fast enough.
Multicellular organisms are more complex in design.
All sense organs are not connected to brain.
Write one word in the space provided to complete the second pair of the related words pertaining to the nervous system :
Memory : cerebrum : : breathing : .......
- Both A and B
- Parasympathetic
- Cerebellum
- Sympathetic