lec 35 respiratory

Question 1

where does low oxygen blood go

Answer 1

pumped from right ventricle into the pulmonary arteries- lungs

Question 2

where does oxygenated blood go

Answer 2

returns to the left atrium via pulmonary veins

Question 3

Which of the
following blood vessels are
NOT part of the pulmonary
circulatory system:
a. Arteries
b. Veins
c. Aorta
d. Capillaries

Answer 3

c. Aorta

Question 4

what is pulmonary circulation

Answer 4

arteries tht leave the heart and go towards lungs, capillaires in sun and veins that leave the lungs going back to the heart.

Question 5

In physiology, when we refer to external respiration, which of the
following is the best description.
a. The intracellular reaction of oxygen with organic molecules to produce
carbon dioxide, water, and energy in the form of ATP
b. Inspiration and expiration
c. Cellular respiration
d. The movement of gases between the environment and the body’s cells

Answer 5

b. Inspiration and expiration
d. The movement of gases between the environment and the body’s cells

Question 6

what is external respiration

Answer 6

the movement of gases between the environment and body cells

Question 7

what can be included in external respiration

Answer 7

exchange of air between lungs and atmosphere
oxygen, and carbon dioxide
transportation of oxygen and carbon dioxide(blood)

Question 8

Beyond serving as a passage
way for air, the upper airways
and bronchi play an important
role in:
a. Warming air
b. Cooling air
c. Adding water vapor to air
d. Drying out the air
e. Filtering out foreign
material

Answer 8

a. Warming air
c. Adding water vapor to air
e. Filtering out foreign
material

Question 9

how does air flow

Answer 9

mouth/nose- pharynx-larynx-trachea-primary bronchi-bronchioles

Question 10

what is Alveoli

Answer 10

interconnected sacs and associated pulmonary capillaries in lungs
form exchange surface where oxygen moves from inhale air to blood and carbon dioxide moves from blood to air that is going to be exhaled

Question 11

what is Alveoli

Answer 11

interconnected sacs and associated pulmonary capillaries in lungs
form exchange surface where oxygen moves from inhale air to blood and carbon dioxide moves from blood to air that is going to be exhaled

Question 12

Which of the following would cause decrease gas exchange?
a. Increase in membrane thickness of alveoli
b. Increase oxygen intake
c. Increase rate of breathing
d. Increase surface area of alveoli
e. Increase airway resistance

Answer 12

a. Increase in membrane thickness of alveoli
e. Increase airway resistance

Question 13

. Which of the following core concepts is best described by the alveoli being so
thin that gases can diffuse rapidly through them
a. Transformations of energy and matter
b. Systems
c. Information flow
d. Evolution
e. Structure function

Answer 13

. Structure function

Question 14

what is the exchange of O2 AND CO2 in lungs and tissue by

Answer 14

simple diffusion across capillary membrane
moves down its partial pressure gradient

Question 15

what is the transport of gases from lungs to tissues and tissues to lungs

Answer 15

by bulk flow in blood
moving down its blood pressure gradient

Question 16

. Why does hyperventilation before holding your
breath allow you to hold it for longer?
a. Clear out carbon dioxide so delay the reflex to breathe
b. Increase oxygen intake
c. Decrease oxygen intake
d. Activate the sympathetic nervous system

Answer 16

a. Clear out carbon dioxide so delay the reflex to breathe