i think the answer is medication
Anatomical and physiological barriers provide the crucial first line of defense against pathogens. These barriers include intact skin, vigorous mucociliary clearance mechanisms, low stomach pH and bacteriolytic lysozyme in tears, saliva and other secretions.
Answer:
(D). cesarean section
Explanation:
Oxytocin is a peptide hormone, synthesized by hypothalamus and secreted by posterior pituitary. Oxytocin plays role in sexual reproduction, lactation, and induce contractions during child birth.
Oxytocin is naturally produced at the time of child birth, but natural oxytocin has a short half-life. Hence, oxytocin infusion is done during child birth or cesarean section as it maintains contraction of uterine wall during the surgery.
Thus, the correct answer is option (D).
