respiration Test pt 4

Question 1

Hydrogen ions produced during internal respiration will not affect the pH of the blood because the hydrogen ions combine with

Answer 1

hemoglobin to form reduced hemoglobin.

Question 2

What is the correct sequence of structures through which an oxygen molecule passes from the nostrils to
the alveolus?

Answer 2

larynx, trachea, right bronchus, bronchioles

Question 3

Blood entering the systemic circulation carries high concentrations of

Answer 3

oxyhemoglobin

Question 4

Most hemoglobin becomes reduced inside a(n)

Answer 4

capillary

Question 5

Which of the following would occur if there were a decreased level of hemoglobin in the blood?

Answer 5

tissues would become more acidic.

Question 6

The pleural membranes function to

Answer 6

maintain negative pressure in the thoracic cavity.

Question 7

A build-up of fluid in the lungs will result in a reduced amount of oxygen in the blood returning to the heart
from the lungs because

Answer 7

the surface area for external respiration has been reduced.