The healthy stomach remains…….
a) sterile
b) acidic
c) antiseptic
d) all of these
In case of immunity, the first of line of defense is/are……
a) skin
b) macrophages
c) blood cells
d) lymphocytes
The healthy stomach remains essentially……
a) fertile
b) sterile
c) less fertile
d) both a and c
Explanation: the germs cannot survive the trip into the stomach because of acidic environment
Which of the following function/s is /are performed by nose?
a) filter out dangerous particles
b) add moisture to each breath
c) warm each breath
d) all of these
Which of the following is/are responsible for filtration in nose?
a) cilia
b) mucus
c) epidermis
d) both a and b
Explanation: powerful sneezing removes particles and mucus
Which of the following is/are included in the first line of defense?
a) skin
b) mucus membranes
c) both a and b
d) none of these
