Quiz 4 Flashcards
(49 cards)
7 types of respiratory muscles
diaphragm intercostals upper airway muscles accessory --scalene and sternalcolato mastoid abdominal---rectus oblique
What are the two types of neural control of the respiratory system
reflex/automatic
voluntary
reflex control of respiratory system is located where?
central pattern generator medulla
voluntary control of nervous system is located where?
cortical motor center
Which cranial nerves are important for upper airway?
IX-XII
Which nerves operate the diaphragm?
c3-c5
intercostal muscles are innervated by which nerve?
thoracic cord?
abdominal muscles are innervated by which nerve?
primary lumbar cord
reflex pathway is controlled by which nerves
reticulospinal
Voluntary pathway is controlled by which nerves?
corticospinal
3 properties of skeletal muscles
length-tension
energetics
fatigue
skeletal muscle oxygen consumption depends on what 2 factors
tension
velocity of shortening
Demand of respiratory muscles are a function of what 3 factors?
Compliance
Resistance
level of Ventilation
supply to respiratory system is what
O2 delivery to Respiratory System
2 functional components of diaphragm
costal fibers and crural fibers
Where do costal fibers arise from
lower ribs and xyphoid
Where do crural fibers arise from?
vertebrae
What are the two forces that lead to expansion of the rib cage?
insertional and zone of apposition
bucket handle effect of lower rib cage is an effect of appositinal or insertion force?
Insertional
diaphragm exerts force at insertion points on lower/upper ribcage?
lower
lower ribcage and part of rib cage that has diaphragm is exposed to what kind of pressure
abdominal
zone of apposition is where
portion of lower rib cage where diaphragm fibers directly apposed to rib cage
when diaphragm contracts and descends, the pressure inside abdomen (decreases/increases) and this,,,,
increases
pushes out lower portion of ribcage
vertically oriented movement of lower rib cage comes from insertional or appositional force?
insertional
