Human ventilation is

(a) negative pressure inhalation.
(b) positive pressure inhalation.
(c) negative pressure exhalation.
(d) both b and c.


(a) negative pressure inhalation.

Biology & Microbiology

You might also like to view...

What is the function of a clitellum in earthworms?

a. anchoring an animal to its substrate b. digestion c. cushions organs d. glues two organisms together for sperm exchange e. keeps blood from clotting

Biology & Microbiology

Which of the following organs of the endocrine system secretes thyroxine and calcitonin?

a. pituitary gland b. pancreas c. hypothalamus d. adrenal glands e. thyroid gland

Biology & Microbiology

Ordinary cell division produces two daughter cells that are genetically identical. This type of cell division is important for all of the following functions EXCEPT ________

A) growth of a multicellular organism B) cell replacement C) production of sperm and eggs D) asexual reproduction

Biology & Microbiology

All of the following are examples of symbiotic relationships except 

A. algae and fungi living together as a lichen. B. the protozoa that live in the intestine of termites and digest cellulose that termites cannot digest. C. the mosquito that visits a mammal for a blood meal. D. the malaria parasite that lives in the liver of humans.

Biology & Microbiology