c6
T or F bird lungs are inflatable and relatively loose interconnecting air tubes
False (non-inflatable and very stiff!)
when air moves to the lungs, half of it is stored in the ___________ (hint most burbs have 9)
air sacs
______ attach muscles to bones, transmitting the force of muscles as they contract
Tendons
shiny connective tissue that bounds muscle fibers
Fascia
ability of an organism to keep its body temp within a certain range, one that is usually different from surrounding environment
Thermoregulation
internal body temperatures that are higher than typical are known as ____________________
Hyperthermia
opening bill wide and vibrating the thin gular membrane of the throat in order to dissipate heat via evaporative cooling
gular fluttering
range of ambient temperatures over which a bird does not require additional metabolic energy for the heating or cooling of its body
Thermal neutral zone or homeothermy
two openings in the upper beak, usually near its base into the nasal cavity
Nares
scroll like projections in the nasal cavity that help filter air, humidity, & olfaction
conchae
enlargement of the lower esophagus that stores food in some groups of birds
Crop
resting state, wherein the body temperature drops, metabolic processes slow, and reactions to external stimuli are slow or lacking
torpor
The muscular, lower part of the avian stomach that grinds and softens food, often with the aid of stones
the Ventriculus (aka gizzard)
windpipe, conducts air from the glottis into the lungs and airsacs
trachea
tissue composed on contractile fibers that shorten when stimulated by a nerve impulse
muscle