Respiratory System

Question 1

Oropharynx

Answer 1

Area directly posterior to mouth

Question 2

Nasopharynx

Answer 2

Area directly posterior to nose

Question 3

Pharynx

Answer 3

Both oropharynx & nasopharynx

Question 4

Larynx

Answer 4

Voice box, contains vocal cords
Cricoid cartilage - ring shaped structure forming lower portion of larynx

Question 5

Trachea

Answer 5

Transports air to and from lungs
Epiglottis closes over glottis (opening) to prevent food/foreign objects
16 C-shaped cartilage rings
Splits into bronchi (two branches) at lung level

Question 6

Bronchial tubes

Answer 6

Air passageways inside lung

Question 7

Nasal cavity

Answer 7

Cleanses, warms, and humidifies inhaled air

Question 8

Bronchioles

Answer 8

Bronchi splitting and branching out farther into each lung, each branch ends at a group of alveoli

Question 9

Alveoli

Answer 9

Small sacs where gas exchange (between oxygen and carbon dioxide) occurs

Question 10

Diaphragm

Answer 10

Divides chest cavity from abdominal cavity, a large muscle controlled by phrenic nerve

Question 11

Inhalation

Answer 11

Muscles of rib cage & diaphragm contract, diaphragm lowers & ribs move upward and outward, creates negative pressure inside chest cavity pulling air into lungs

Question 12

Exhalation

Answer 12

Intercostal muscles & diaphragm relax, ribs move downward & inward & diaphragm rises, chest cavity decreases and positive pressure pushes air out

Question 13

Ventilation

Answer 13

Movement of gases to and from alveoli
Each single alveolus surrounded by pulmonary capillaries, capillaries bring blood to outside of alveoli
Oxygen transferred from air in alveoli to bloodstream, carbon dioxide from bloodstream into alveoli

Question 14

Respiration

Answer 14

Moving gases (and other nutrients) between cells and blood

Question 15

Buffer system

Answer 15

Regulates body pH

Question 16

Path of inhaled air

Answer 16

Larynx to trachea