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64 Cards in this Set

  • Front
  • Back

four processes carried out by respiratory system

1 pulmonary ventilation: moving air into and out of lungs


2 external respiration: exchange of gases at the alveoli of the lungs


3 transport of respiratory gases to the tissue


4internal respiration: exchange of gases between blood and tissue

structures of upper respiratory tracts

nose, paranasal sinuses and pharynx

what separates upper and lower respiratory tracts

larynx



lower respiratory tract structures

trachea, bronchi and lungs

after air goes through nose,

scroll-like bones make up nasal conchae whic are lined by mucous membrane. Air is moisturized, filtered.

increased surface area and mixing of air enhances what?

olfaction

what serve as chambers that resonate sound as we speak

sinuses


is a passageway for air, liquids and solids

pharynx

devision of pharynx

masopharynx, oropharynx, laryngopharynx

masopharynx funtion

eustachian tubes (auditory), houses the pharyngeal tonsils

oropharynx function

houses the palatine tonsils and lingual tonsils

laryngopharynx function

respiratory and digestive function

voice box

lanrynx

what connects the laryngopharynx with the trachea

larynx

floating, u shpaed bone in anterior of neck

hyoid bone

sorting paddle that detects and responds to material entering the oropharynx

epiglottis

food or water goes to

esophagus

if gas is breathed in,

it goes from epiglottis into larynx and thrachea

initial segment of respiratory system

trachea

glottis

opeing of the larynx, vocal chords, opeing between chords

men have lower voices becuase

effects of androgens during puberty thickening and elongating vocal cords

nine pieces of cartilage that make up larynx

thyroid, epiglottis, cricoid


paired: arytenoid, corniculate and cuneiform

leaf shaped piece of hyaline cartilage that closes over the larynx when food or liquids are swalloed

epiglottis

influences changes in position and tension of the vocal folds

arytenoid

corniculate and cuneiform

support the vocal folds

posterior surface of the trachea is shared with the

esophagus

the trachea divides into

the right and left primary bronchi

the trachea divides into primary bronchi at the

carina

how many secondary bronchus per lung

left lung: 2


right lung: 3


one for each lobe

bronchi enter at the

hilum along with blood vessels

secondary bronchi furthur branch to form

bronchioles

bronchioles divide into

several alveolar ducts

alveolar ducts end in

alveoli

alveoli provide what

a large surface area for the exchange of gases

serous membrane consists of

areolar connective tissue covered by simple squamous epithelium

if membrane becomes inflamed a condition called

pleurisy occurs

pleurisy causes

friction between layers of membrane

exess fluid may accumulated in the pleural caivity due to inflammation, difficult to breath

pleural effusion

muscle that forms the floor of the thoracic caivity, powers breathing

diaphragm

contraction of diaphragm cauese

enlarges the thoracic cavity enhabling inhalation

diaphragm responsible for

75% of air that enteres the lungs during quiet breathing

phrenic nerve originates from spinal cord at levels

c3-c5

"c3, 4 and 5

keep the diaphragm alive"

phrenic nerve distributes over the superior surface of

diaphragm

when what is stimulated, contraction of the diaphragm

phrenic nerve

sympathetic causes

dilation of bronchial smooth muscle

cells and nerves of sympathetic nervous system

-preganglionic cell bodies in intermediate horn of t1-t4 spinal cord


-postganglionic cell bodies in sympathetic chain ganglia


-nerves from pumonary plexus in hilum and lung

parasympathetic inervation via

vagus nerve

acetylcholine is the neurotransmitter released during

parasympathetic response

structures of conductiong zone

nose, pharynx, larynx, trachea, bronchi, bronchiles, and terminal bronchioles

structures of respiratory zone

respiratory bronchiles, alveolar ducts, alveolar sacs, and alveoli

after air enters nose or mouth air must

travel down pharynx, through larynx, and down trachea

air travels through trachea and make right or left turn at

primary bronchus

bronchiles end in the basic unit of the lung

lobule

each lobule contains a

lymphatic vessel, arteriole, venule, and a branch from a terminal bronchile

terminal broncioles subdivide into tiny

respiratory bronchioles

epithelium of trachea and bronchi is

pseudostratified columnar epithelium

mucus and cilia form

mucociliary escalator which brings dust and other particles out of the lungs and into the pharynx to be swallowed

bronchi and bronchioles are ringed by

smooth muscle

r

smooth muscle that ring bronchi do what

regulates the diameter of the conductiong airways

type 1 alveolar cells form a thin

alveolar-capillary membrane in collaboration with capillary endothelial cells

type ii alveolar cells

secrete surfactant

what englulf large particles and inaders then ride the mucociliary escalator out of the lungs

alveolar macrophages

thin membrane that allows for easy diffusion of gasses

alveolar capillary membrane