physiology Flashcards
which duct connects to the parotid gland
duct of stenson
which duct connects to the sublingual gland
duct of rivinus and common bartholin
which duct does the submandibular connect to
duct of wharton
what does the duct from the sublingual gland connect with
rivinus and Bartholin connect with whartons
where is saliva secreted from
parotid, sublingual and submandibular glands
where does the duct of stenson enter
enters the mouth opposite second maxillary molar teeth
where does the duct of Wharton-submandibular enter
under the tongue by lingual frenulum
where is sublingual galdn ender
sub lingual is medial to submandibular glands-ducts of rivinus and common Bartholin-connect with whartons at the sublingual caruncula
which are more medial sublinguinal or submandibular
sublingual
are salivary glands exocrine or endocrine
exocrine
what do salivary glands consist of
an external capsule
septae separating lobes and lobules
lobules are composed of salivons
what does each salivon consist of
a secretory acinus
an intercalated disc
a striated duct
what do striated ducts unite to form
interlobular ducts
excretory ducts
what is serous solution rich in
a amylase, contain small dense secretory granules
what is an acinus formed from
pyramidal shaped secretory acinar cells around a central lumen
what is a striated duct formed from
columnar epithelium
what is an intercalated duct formed from
cuboidal epithelium
what immunoglobulin is found in saliva
IgA
where does most saliva come from
submandibular gland
what are the 2 stages is saliva excretion
primary secretion by acinar cells
secondary modification by duct cells
is parotid gland mostly serous or mucus
serous
what is sublingual gland mostly serous or mucous
mostly mucous cells
Hco3 increased or decreases with rate
Hco3 increases with rate
ph also increases with rate
does K+ increase or decrease with rate
K+ decreases with rate
where does pelvic cavity lie
between pelvic inlet and pelvic floor
describe the sequence of events in vomiting
suspension in slow wave activity
increase in retrograde contractions form the ileum to the stomach
suspension of breathing-closing of the glottis to prevent aspiration of gastric contents
relaxation in LOS, contraction of abdo muscles and diaphragm to compress the stomach
expulsion of gastric contents through the open UOS
what does CTZ coordinate an AP in response to
endogenous toxins, drugs, vagal afferents
what is special about the CTZ
it lacks a blood brain barrier
what does pain and repulsive sights smells and emotional factors do
sends signal to VC which coordinates vomiting
what is the vomiting centre
a group of interconnected neurones within the medulla driven by a central pattern generator
what does severe vomiting cause in relation to arterial blood gases
a metabolic alkalosis
what can 5 ASA protect against
colorectal cancer
what does 5 ASA stand for
5 aminosalicylate acid
