Respiration

Question 0

transfer of O2 and CO2 BETWEEN alveoli and blood and between blood and tissue is which transport method

Answer 0

Diffusion

Question 1

Ventilation (external resp) is convective or diffusive?

Answer 1

convective movt of air into alveoli

Question 2

gas (O2 CO2) transport BY blood is

Answer 2

convective

Question 3

Internal respiration is

Answer 3

intracellular metabolic processes that use O2 and produce CO2

Question 4

Arteriolized blood

Answer 4

went through lungs and oxygenated

Question 5

Gas exchange occurs only in

Answer 5

alvioli and small bronchioles

Question 6

Anatomy

Answer 6

trachea, bronchi, bronchioles, alveoli:
all have smooth muscle and cilia (at least some) except alveoli
trachea and bronchi have cartilage
no cartilage in resp bronchioles and alveoli

Question 7

Conducting zone is aka

Answer 7

Anatomical dead space: not available for gas exchange

generations 1 - 16

Question 8

Respiratory zone is

Answer 8

Gas exchange zone/alveolar ventilation volume:

generations 17-23

Question 9

alveolar duct

Answer 9

when so many alveoli that they make up the wall

Question 10

Bronchus vs. bronchiole

Answer 10

2 mm vs 0.2 mm

CARTILAGE, sm muscle, submucosal gland, PA (pulm artery) (rigid) vs. NO CARTILAGE (expand)

Question 11

Smooth m of bronchi and bronchioles is controlled by

Answer 11

ANS:
SNS - Beta2 receptor (airway dilation) (Albuterol is an agonist)
PNS - Muscarinic receptor (constriction)

Question 12

diameter of bronchioles depend on

Answer 12

lung volume

Question 13

Terminal Resp Unit (TRU)

Answer 13

Acinus:
small airways and alveoli served by terminal bronchiole
about 2000 alveoli

Question 14

SRB resp bronchioles

Answer 14

have some alveoli

Question 15

What receives whole cardiac output?

Answer 15

Pulmonary Artery (From RV)

Question 16

Why need to keep pressure in capillaries as low as possible?

Answer 16

to prevent fluid from moving into alveolar sack.

almost nothing to prevent fluid from moving from lumen of capillary into alveolar sack -> edema

Question 17

When hyperventilate:

Answer 17

Lower CO2 and make less acidic

Question 18

When hypoventilate

Answer 18

Raise CO2 (lower O2) and increase acid

Question 19

where are blood becarbonate and CO2 levels regulated?

Answer 19

bicarb - kidney

CO2 - lungs

Question 20

Non resp fx of lungs

Answer 20

Lungs receive ALL of CO
angiotensin converting enzyme AngI to Ang II
enzymes that inactivate bradykinin and some prostaglandins
serotonin removed
IgA immunoglobulins released

Question 21

Respiratory quotient RQ or RER (resp exchange ratio)

Answer 21

ratio of VCO2 to VO2
fats: 0.7
carbs: 1.0
mixed or protein: 0.8 (assume this one if value not given)

Question 22

VO2

Answer 22

Oxy consumption

Question 23

VCO2

Answer 23

CO2 production

Question 24

Q

Answer 24

volume of blood

Question 25

A vs a

Answer 25

A: Alveolar a: arterial v: venous L: lung I inspired E expired v