week 10 respiratory system

Question 1

Functions respiratory function

Answer 1

Exchange of gases between blood and atmosphere
-Homeostatic regulation of PH
-protection from inhaled pathogens and irritating substances
-vocalización

Question 2

Respiratory system

Answer 2

Pharynx
Vocal cords
Nasal cavity
Tongue
Larynx
Esophagus
Trachea
Right lung
Right bronchus
Left Lung
Left bronchus
Diaphragm

Question 3

inspiration (inhalation)

Answer 3

The diaphragm and intercostal muscles contract

Question 4

exhalation

Answer 4

Exhale
Intercostal muscle relax. The diaphragm relaxes upwards.

Question 5

ALVEOLI

Answer 5

-moist, thin-walled pockets (sites of gas exchange)
A slightly oily surfactant and revers walls from collapsing
TWO TYPES OF CELLS-
-Simple squamous epithelia 95%(gas exchange)
-simple cuboidal epithelia 5%
(Surfactant secretion)

Question 6

In the alveolus

Answer 6

Capillary
Alveolar membrane
Respiratory membrane
Surfactant fluid
( from the pulmonary artery, oxygen diffuses into red blood cells, carbon dioxide diffuses into alveolus, to the pulmonary vein)

Question 7

Gas exchange

Answer 7

Air entering the lungs contains more oxygen and less carbon dioxide then the blood that flows in the pulmonary capillaries

Question 8

oxygen transport

Answer 8

Hemoglobin binds to oxygen that diffuses into the blood stream

Question 9

Carbon dioxide transport

Answer 9

• carbon dioxide can dissolve in plasma, ab 70% forms bicarbonate ions
• some carbon dioxide can bind to hemoglobin for transport

Question 10

External and cellular respiration

Answer 10

AIRWAYS
ALVEOLI OF LUNGS
(Exchange between atmosphere and lung) ( exchange- between lung and blood)
PULMONARY CIRCULATION
(Transport of gases in the blood)
SYSTEMIC CIRCULATION
(Exchange-Between blood and cells )