Assertion (A) : Castration does not eliminate sexual behaviour completely in mammals, including humans, of both sexes.
Reason (R) : Hormones do not play role in the regulation of sexual behaviour.
Castration and Sexual Behaviour Analysis
Assertion (A) states that castration does not completely eliminate sexual behaviour in mammals, including humans. This is true. While gonadal hormones are primary drivers, sexual behaviour is influenced by various factors like neural circuits, psychological states, and established behavioural patterns, which can persist post-castration.
Hormonal Regulation of Sexual Behaviour
Reason (R) claims hormones play no role in regulating sexual behaviour. This is false. Hormones, particularly sex steroids like testosterone and estrogen, are critical for sexual development, motivation, and performance in mammals. Their influence is well-documented across numerous studies.
Conclusion
Evaluating the statements:
- Assertion (A) is factually correct.
- Reason (R) is factually incorrect.
Therefore, the correct choice is that Assertion (A) is true, but Reason (R) is false.
Important Questions from System Physiology Animal
- When is aspiration a method of choice to make a lesion ?
- Trace the sequence of events turning default female sex of the fetus into male :
(a) SRY gene produces Sry protein
(b) Presence of Y chromosome
(c) Testosterone masculanize Wolffian duct into seminal vesicles
(d) Primitive gonad develop into testes
(e) Mullerian inhibiting hormone defeminizes the fetus - Autonomic Nervous System is concerned with the regulation of _______ .
I. Smooth muscles
II. Skeletal muscles
III. Cardiac muscles
IV. Glands
Codes : - Given below are two statements, one labelled as Assertion (A) and the other labelled as Reason (R) :
Assertion (A) : A positive charge applied to the inside of the membrane of the neuron produced depolarization.
Reason (R) : Inside of the membrane was positively charged.
In the context of the above two statements, which one of the following is correct ?
Codes : - Which one of the following events is critical for the development of internal sex organs in males during 3rd month of gestation ?
