How does chemical mediators act as physiological barriers?

Diaphragms are contraceptive devices used by the females. Choose the correct option from the statements given below (i) They are introduced into the uterus (ii) They are placed to cover the cervical region (iii) They acts as physical barriers for sperm entry (iv) They act as spermicidal agents.

Which one of the following acts as a physiological barrier to the entry of micro organisms in human body

Read the given statements carefully. (i) Innate immunity is a specific type of defence, that is present at the time of birth. (ii) Malignant malaria is caused by Plasmodium falciparum. (iii) Malaria could be confirmed by Widal test. (iv) Active immunity is slow and takes time to give its full effective response. (v) Saliva in the mouth acts as physiological barrier for pathogens. Which of the above statements are correct ?

How does soil originate?

How does leech respire?

How physical dryness differ from physiological dryness?

Endocrine glands control and co-ordinate the body functions through secreting certain chemical messengers called hormones. Due to certain physiological reasons, the blood glucose level of otherwise normal persons increases. How can this condition be reveresed?