Which of the following is $NOT$ included in physiological barriers?

  • A
    Mucus coating of the gastrointestinal tract
  • B
    Saliva in the mouth
  • C
    Tears from the eyes
  • D
    Acid secretion in the stomach

Explore More

Similar Questions

Class of cytokines released by cells infected with viruses and certain $WBC$'s to protect from viral infection are . . . . . . .

Which of the following immunoglobulins constitutes the largest percentage in human milk?

Antigen binding site is present in

Which cells are responsible for the production of antibodies?

Primary lymphoid organs $- P$
Secondary lymphoid organs $- Q$
$I -$ Appendix, $II -$ Peyer's patches of small intestine,
$III -$ Thymus, $IV -$ Spleen, $V -$ Lymph node, $VI -$ Bone marrow, $VII -$ Tonsils
Select the correct option for $P$ and $Q$.
$\quad P \quad \quad Q$

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo