Question

Which of the following is an incorrect pair?
1. Effector organ of somatic reflex-skeletal muscles
2. Receptor organ of somatic reflex -smooth muscles
3. Effector organ of visceral reflex-skin
4. Receptor organ of visceral reflex- epithelial lining of the gut
A. 1 and 2
B. 2 and 3
C. All of the above
D. None of the above

Answer 1

Hint: The reflex action is an involuntary reaction taken by the body in response to certain stimuli. Body reflexes are of two types. They are somatic and visceral reflexes.

Step by step answer:The reflex actions are mainly controlled by the spinal cord. Somatic reflexes are the reflexes that involve skeletal muscles. Meanwhile, visceral reflexes include visceral organs of the body like the heart, blood vessels, and intestines. Somatic reflexes are sometimes called withdrawal reflexes. In somatic reflex, receptors are present in the skeletal muscle and skin. These receptors are stimulated by touch, pain, pressure, movement, etc. The signals from the receptor are carried to the spinal cord by afferent sensory neurons. Signals are transmitted back through efferent motor neurons towards the effector. In somatic reflex, the effector organ in skeletal muscle. Here, receptors include specialized sensory receptors. They are called proprioceptors. The visceral reflex, the receptor organ is present in a visceral organ. When they are stimulated, they initiate an autonomic response. They are primarily involved in the regulation of blood pressure, temperature, pH levels, etc. They help in the normal functioning of visceral organs in our body. Effectors are also seen in visceral organs.
Hence, the correct option is B

Note: The stretch reflexes which are important components of somatic reflexes. Receptors for this reflex are muscle spindles which are the specialized type of proprioceptors. Knee jerk reflex is an example of a stretch reflex which is used by clinicians. When a muscle is stretched, muscle spindles are stimulated which initiates the reflex.