Human Respiratory System Bio 20

Front 1

Alveoli (alveolus)

Back 1

gas exchange structure within lungs; tiny air pocket with walls made of a membrane one cell thick, allowing for respiratory gas exchange.

Front 2

Bronchiole

Back 2

the passageway that branches from the bronchi into the separate lobes of the lungs; divides into smaller and smaller passageways that carry air into all portions of the lungs.

Front 3

Bronchus (bronchi)

Back 3

the passageway that branches from the trachea into the lungs, with one bronchus carrying air into each lung.

Front 4

Diaphragm

Back 4

a muscle layer that separates the region of the lungs (thoracic cavity) from the region of the stomach and liver (abdominal cavity) contraction increases the volume of the thoracic cavity.

Front 5

Epiglottis

Back 5

flap of cartilage located over the entrance to the trachea, it closes off the trachea during swallowing.

Front 6

Glottis

Back 6

the opening of the trachea through which air enters the larynx.

Front 7

Larynx

Back 7

a structure within the upper respiratory tract that contains the vocal cords; also known as voice box.

Front 8

Nasal passages

Back 8

passage from the nostrils to the back of the throat through which air enters the body; warms, moistens, and cleans; lined with ciliated cells and mucus-secreting cells.

Front 9

Nostril

Back 9

Either of two external openings of the nasal cavity in vertebrates that admit air to the lungs and smells to the olfactory nerves.

Front 10

Pharynx

Back 10

structure located just behind the mouth that connects mouth and nasal cavity to the larynx and esophagus; serves purpose as passageway for air into respiratory system and for food and water into digestive system.

Front 11

Pleural membrane

Back 11

double-layered membrane that encloses the lungs; also referred to as pleura.

Front 12

Thoracic cavity

Back 12

chest cavity: the cavity in the vertebrate body enclosed by the ribs between the diaphragm and the neck and containing the lungs and heart.

Front 13

Trachea

Back 13

A tube-like portion of the breathing or "respiratory" tract that connects the "voice box" (larynx) with the bronchial parts of the lungs.

Front 14

Spirograph

Back 14

graph representing the amount of air that moves into and out of the lungs.

Front 15

Tidal volume

Back 15

volume of air is inhaled and exhaled in a normal breathing movement when the body is at rest.

Front 16

Inspiratory reserve volume

Back 16

the maximal amount of gas that can be inhaled from the end-inspiratory position.

Front 17

Expiratory reserve volume

Back 17

the maximal amount of gas that can be exhaled from the resting end-expiratory level. Abbreviated ERV.

Front 18

Vital Capacity

Back 18

is the maximum amount of air a person can expel from the lungs after a maximum inspiration

Front 19

Residual volume

Back 19

the amount of gas remaining in the lung at the end of a maximal exhalation.

Front 20

External Respiration

Back 20

the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation

Front 21

Internal Respiration

Back 21

the metabolic processes whereby certain organisms obtain energy from organic molecules; processes that take place in the cells and tissues during which energy is released and carbon dioxide is produced and absorbed by the blood to be transported to the lungs.