lab test 3

pharyngotympanic tube

tube that opens into the lateral walls of the nasopharynx and connects the nasopharynx to the middle ear

pharyngotympanic tube function

allows the middle ear pressure to equalize with the atmospheric pressure

paranasal sinuses description

surround the nasal cavity and are named for the bones in which they’re located

paranasal sinuses function

• act as resonance chambers for speech

• warm and moisten incoming air

thyroid cartilage description

• large cartilage made up of hyaline cartilage

• laryngeal prominence is commonly referred to as adam’s apple

thyroid cartilage function

forms the framework of the larynx

what trachea is lined with

ciliated mucus secreting pseudostratified columnar epithelium

what is hilum

medial indentation where structure of the root enter (or leave) the lung

cardiac notch

concavity located in medial lung surface which accomodayes the heart where it extends left from the body midline

pleura

double layered sac of serous membrane enclosing each lung

inspiration

air is taken into lungs

expiration

air passes out of lungs

bronchial sounds

produced by air rushing trough large respiratory passageways

vesicular breathing sounds

results from air fulling the alveolar sacs and resembles rustling leaf sounds

crown of tooth

superior portion of tooth visible above gingiva or gum which surrounds tooth

enamel

covers crown surface

enamel consists of

95-97% inorganic calcium salts making it heavily mineralized

block in common hepatic or bile duct

bile can’t enter small intestine, accumulates, and backs up into liver

effects of blocked common hepatic or bile duct

• pressure on liver cells and bile enters bloodstream

• tissues become yellow and jaundiced from bile’s body circulation

cortical nephrons

most numerous making up 85% of nephrons

cortical nephrons location

almost entirely within renal cortex except for small parts of their nephron loops dipping into renal medulla

regions of male urethra

• prostatic and spongy urethra

• intermediate part

external urethral orifice

external opening anterior to vaginal opening

ectopic pregnancy

implantation outside the uterus

where ectopic pregnancy may implant

in uterine tube or abdominal viscera

problem with ectopic pregnancy

can’t account for growing size of fetus making it dangerous