functions of respiratory system

what is the basic structural unit of an organism

cell

what are the general functions of the respiratory system (2)

• bring oxygen to cells

• cellular respiration

what two structures are required for gas exchange and what do they do

• diaphragm

• intercostal muscles

enlarge the chest cavity

what are the stages of cellular respiration

• conductive stage

• respiratory stage

which stage does gas exchange occur

respiratory stage

what are the two types of respiration

internal

external

describe external respiration

exchange of gas between lungs and blood

describe internal respiration

exchange of gas between blood and tissue

what are the secondary functions of the respiratory system (5)

• production of speech

• ph balance for blood

• odor detection

• thermoregulation

• disease prevention

describe an organ system

group of organs in the body that work together

how does disease prevention occur in the respiratory system

filtration of harmful particles

what are 4 ways that the respiratory system filtrates against harmful particles

• nose hairs

• mucus

• mast cells

• macrophages

what are the three ways that mucus filtrates particles

• cillia sweep

• lysozymes break down debris

• immunoglobulin A neutralize pathogen

how do mast cells help with filtrating particles

release inflammatory chemical that increases blood flow

how do macrophages filtrate particles

engulfs them

what are macrophages

large phagocytic cells

group of organs in the body that work together

organ system

how does thermoregulation occur in the respiratory system

nasal capillaries constrict to conserve heat and dilate to release heat

what are the steps to gas exchange

in nose or mouth

pharynx

larynx

trachea

r and l bronchi

bronchioles

alveoli

respiratory membrane

o2 stays in co2 goes out

name: pressure gradient on shared basement membrane between capillaries and alveoli

respiratory membrane

what is a respiratory membrane

pressure gradient shared between the basement membrane of the alveoli and capillaries