Given below are sets of five terms each. Rewrite the terms in correct order in a logical sequence.
Example: Large intestine, Stomach, Mouth, Small intestine, Oesophagus.
(b) Receptor, Spinal cord, Effector, Motor neuron, Sensory neuron.

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Solution

Receptor:
They help in detecting the stimuli and conducting sensory impulses to the central nervous system via the sensory neuron.
Spinal cord:
It is the part of the central nervous system which extends from the base of the brain and controls the reflex below the neck.
Effector:
It is a muscle or a gland that responds to the motor information transmitted from the central nervous system via the motor neuron.
Motor neuron:
It has a short dendrite and long axon and conducts impulses from the central nervous system to an effector.
Sensory neuron:
It has long dendrites and a short axon and conducts impulses to the central nervous system from the sensory receptors.
Hence, the terms in the correct order in a logical sequence of a reflex arc are Receptor, Sensory neuron, Spinal cord, Motor neuron, Effector

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Q. One of the following gives the correct sequence of the components in a reflex arc. This is :
(a) Receptors → Muscle → Sensory neuron → Motor neuron → Spinal cord
(b) Receptors → Motor neuron → Spinal cord → Sensory neuron → Muscle
(c) Receptors → Spinal cord → Sensory neuron → Motor neuron → Muscle
(d) Receptors → Sensory neuron → Spinal cord → Motor neuron → Muscle

Which of the following is the correct sequence of parts as they occur in the human alimentary canal ?

(a) Mouth $\to$ Stomach $\to$ Small intestine $\to$ Oesophagus $\to$ Large intestine
(b) Mouth $\to$ Oesophagus $\to$ Stomach $\to$ Large intestine $\to$ Small intestine
(c) Mouth $\to$ Stomach $\to$ Oesophagus $\to$ Small intestine $\to$ Large intestine
(d) Mouth $\to$ Oesophagus $\to$ Stomach $\to$ Small intestine $\to$ Large intestine

Given below are sets of five terms each. Rewrite the terms in the correct order in a logical sequence.

Receptor, Spinal cord, Effector, Motor neuron, Sensory neuron.

Given below is a group of five of terms. Arrange and rewrite the terms in correct order so as to be in a logical sequence.

Spinal cord, motor neuron, receptor, effector, sensory neuron

Given below are sets of five terms each. Rewrite the terms in correct order in a logical sequence.

Example: Large intestine, Stomach, Mouth, Small intestine, Oesophagus.

(a) Cochlea, Malleus, Pinna, Stapes, Incus.

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Given below are sets of five terms each. Rewrite the terms in correct order in a logical sequence.Example: Large intestine, Stomach, Mouth, Small intestine, Oesophagus.(b) Receptor, Spinal cord, Effector, Motor neuron, Sensory neuron.

Given below are sets of five terms each. Rewrite the terms in correct order in a logical sequence.
Example: Large intestine, Stomach, Mouth, Small intestine, Oesophagus.
(b) Receptor, Spinal cord, Effector, Motor neuron, Sensory neuron.