Neural Control and Coordination Test 13

Result

Neural Control and Coordination Test 13

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is the example of conditioned reflex?

A
Hand withdraws when pierced with a needle

B
Eye closes, when anything enters into it

C
During digestion food goes forward in alimentary canal

D
Trained dog salivates when you ring a bell

Solution

Trained dog salivates when you ring a bell is the example of conditioned reflex. Conditioned reflexes are acquired reflexes, dependent on past experience, training and learining.
Question 2
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What is the correct path of a reflex arc?

A
Sensory stimulus → Dendrite → Axon

B
Motor nerves → Acetylcholine → Adjustor neuron

C
Efferent nerves → Connector nerves → Motor nerves

D
Afferent nerves → Efferent nerves → Connector nerves

Solution

The correct pathway of reflex arc is : Sensory stimulus → Dentrite of sensory neuron → Axon of sensory neuron → CNS → Dendrite of motor neuron → Axon of motor neuron → Effector organ
Question 3
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For good reflex actions we require intact

A
spinal cord

B
medulla oblongata

C
hypothalamus

D
cerebellum

Solution

The afferent neruron receive signal from a sensory organ and transmits the impulse the via a dorsal nerve root into CNS (at level of spinal cord).
Question 4
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Which of the following is not a reflex action?

A
salivation

B
sweating

C
withdrawal of hand when pinched by needle

D
blinking of eyes

Solution

An automatic (involunatary) neuromuscular action elicited by defined stimulus is called reflex action. Sweating is not reflex action. It is primarily a means of temperature regulation.
Question 5
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The path of reflex arc is shown in the given figure. Identify the different labellings A, B, C, D, E, F and select the correct option

A
a

B
b

C
c

D
d