anat respiration Flashcards
inhale muscles
sternocleidomastoid
elevates sternum
scalenes group
elevates upper rib
external intercostals
elevates ribs
diagrpahn
descend n elevates lower ribs
exhale muscles
lung elastic recoil
internal intercostalis
pull ribs down
abdominals
pull ribs down, compress abdominal organs pushing the diapragm up
funcion
filter incoming air n transport it into the body, air, and air sacs where gas exchange
4 process of respiration
ventilation
external repsiration
internal respiration
cellular respiration
ventilation
movement of air in/out of lung
external respiration
exchange of gases btw lung/blood
internal respiration
exchange of gases btw blood n body cells
cellular respiration
oxygen ultilization and production of CO2 by body cells
upper respiratory system
nose
nasal cavity
sinuses
pharynx
lower respiratory system
larynx
trachea
bronchial tree
lungs
function of membranes in nasal cavity
moisten air coming through and entraps dust/other entering w/the air
function of cilia linings
push a thin layer of mucus/particles toward the pharynx
conducting portion
transport air into/out of the lung
respiration portion
allow gas exchange btw lung/blood
lung sections
lobes: contains blood/lympatic vessels
lobules: terminal bronchi
fissure divide lobes
purpose of sinuses
open into nasal cavity
reduce weight
resonant chambers that effect quality of voice
produce mucus
cartilage larynx
the thyroid cartilage is more prominent in males bc sex hormones
vocal cords
true vocalchords have elastic fibers. produce sounds when air is forces btw upper n lower folds. vibration generates sound waves.
pitch
controlled by changing tension on the cords
^tension=^pitch
function of serous fluid
lubricates, reduces friction, allow sliding.
pressure to volume relationship
^volume=! pressure
if pressure decreases, outside air will be pused into the lungs
V1P1=V2P2
hilus
point at which the bronchi, pulmonary arteries and veins, lymphatic vessels, and nerves enter the lung.
water
70%
water and CO2 makes H2CO3 which breaks to H+ and HCO3-
stimulis for breathing
H+ level directly
chemoreceptor at aorta/caroitid artery minotor it. H+ is also monitored in CSF by medulla
mechanoreceptor in lung
tells you to stop breathing
relax inhale
medulla sends impulse to phrenic nerve to diaphragm=contract=^volume of lung
contract diaphragm and extern intercostalis
iaphragm
touches parietal pleura
relaxed exhale
relax diapragm,=^pressure
elastic recoil cuauses lung to compress.
relax of other muscles
forceful inhale
muscle contract
forced exhale
contract abdominal force compression abdominal internal intercostalis
medulla stop sending info to diapragm
