Given below are two statements, one labelled as Assertion (A) and the other labeled as Reason (R) : Assertion (A) : The integrative pattern of posture is predominantly automatic and unconscious, resulting from the incessant shifting of weight. Reason (R) : Postural control involves static and phasic reflexes and are integrated in the central nervous system. In the context of the above two statements, which of the following statement is correct ?
Assertion A: Integrative Posture Pattern
Statement (A) posits that the integrative pattern of posture is largely automatic and unconscious, driven by continuous weight shifting. This is accurate. Our bodies constantly make small, subconscious adjustments to maintain balance and upright posture, especially when shifting weight.
Reason R: Postural Control Mechanisms
Statement (R) states that postural control relies on static and phasic reflexes integrated within the central nervous system (CNS). This is also correct. The CNS processes sensory information (from muscles, joints, eyes, inner ear) and orchestrates reflexes to maintain posture, involving both steady-state (static) and movement-related (phasic) responses.
Relationship Between Assertion and Reason
The reason (R) provides the underlying physiological explanation for the assertion (A). The automatic and unconscious nature of postural control mentioned in (A) is made possible by the complex integration of static and phasic reflexes within the CNS, as described in (R). These neural mechanisms enable the body to react automatically to changes in weight distribution and maintain equilibrium.
Conclusion
Both statements (A) and (R) are true, and Reason (R) correctly explains Assertion (A). The CNS's integration of reflexes is the mechanism behind the automatic, unconscious postural adjustments resulting from weight shifting.
Important Questions from Nervous system - Teaching
- Myelin sheath which insulates most axons in CNS is produced by ______
- The largest structure in the Limbic System is the ______
- An EEG record during NREM sleep shows ______ waves
- The somatic nervous system functions with the help of _____ nerves.
- Which of the following hypothalamic nuclei were considered as hunger regulator?
A. Supra optic nucleus
B. Ventromedial hypothalamus
C. Medial
D. Lateral
E. Paraventricular
Choose the correct answer from the options given below:
