Ch 16- Respiratory system Flashcards
Air flow through lungs to provide Oxygen TO the body
Nasal cavity/mouth> pharynx> larynx> trachea> bronchii> bronchiole> alveoli
Chronic obstructive pulmonary disease (COPD)
group of lung diseases that block air flow & make it difficult to breathe (includes bronchitis and emphysema)
Bronchitis
Emphysema
- causes increased mucus & inflammation
- causes destruction and enlargement of air spaces
Inspiration muscles
sternocleidomastoid and scalenes help to bring rib cage up and away
Expiration muscles
rectus abdominis and quadratus lumborum help to bring rib cage down and in to push air out
Quiet inpiration
occurs about 70% of time, muscles- diaphragm, external intercostals
Deep inspiration
like during yoga, muscles- muscles of quiet inspiration plus sternocleidomastoid, scalenes, pectoralis major, levator costarum, serratus posterior superior
Forced inspiration
just ran as fast as you can or have COPD, muscles: muscles of quiet and deep inspiration plus legator scapula, upper trapezius, rhomboids, pectorals minor
Quiet expiration
when just sitting there, muscles: relaxation of diaphragm and external intercostals, recoil of thoracic wall, lungs and bronchi, gravity, internal intercostals in assistive role
Forced expiration
yoga class or trying to catch breath, muscles: internal intercostals plus external and internal oblique, transverse abdomens, rectus abdomens, quadrates lumborum, serratus posterior inferior
Diaphragm
O- xiphoid process, ribs, lumbar vertebrae
I- central tendon
A- inspiration (contraction of diaphragm)
N- phrenic
External intercostals
O- rib above
I- rib below
A- elevate ribs during inspiration
N- intercostal nerve
Internal intercostals
O- rib below
I- rib above
A- depress ribs during expiration
N- intercostal nerve
Upper respiratory infection
any infection confined to the nose, throat, and larynx (common cold is most frequent example)
Pneumonia
lower respiratory infection (most common), inflammation of the alveoli, caused by bacterial viral infection