three types of muscle tissue
cardiac
skeletal
smooth
two proteins that are essential for muscle cell contraction
actin
myosin
heart rate
number of beats the heart makes per minute (measured in bpm)
function of the epiglottis
prevents food from entering the trachea
the __ contains vocal cords that help produce sounds
larynx
role of the diaphragm in the respiratory system
separates the thoracic cavity from the abdominal cavity
main parts of the respiratory system and their functions
mouth: connects the pharynx to nose
nose: filters the primary entrance
pharynx: connects nose to larynx
larynx: produces voice in vocal cords
trachea: connects larynx to bronchi
bronchi: airway to lungs
bronchioles: airway ending in alveoli
alveoli: oxygen exchanges take place
lungs: contain bronchioles & alveoli