anatomy need help

[superstar2008]

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Which cycle is most variable in mammals?
G1, G2,G0,M
muscle not involved in the mastication
ant.digastric, mylohyoid
how many blood supply doea liver have?
whats ant to ethmoid sinus?
how many types of epithelium does the lining of kidney tubule have?
whts the first branch of maxillary artery?
how amany unpaired sinus are there?

Sorry for the lack of choices, this is from the remembered questions. Pls do bear with me and post your answers.

 

[gaya]

1.g1 is the most variable phase
2.first part of maxillary artery is deep auricular artery branch of the first part of maxillary artery
3.4unpaired sinuses -sup sagital sinus ,inf sagittal sinus .straight sinus ,sinus confluens
4.liver has dual blood supply ,hepatitic artery and portal vein
5.kidney tubule has 4 types of epithelium 1.proximal convoluted tubule -simple ciliated columnar 2.ascending limb -simple squamous 3.descending limb -nonciliated columnar,4 collecting duct -cuboidal

please correct me if iam wrong

 

[superstar2008]

thank you gaya! but the liver is supplied by the hepatic artey with the oxygenated blood and the portal vein is the deoygenated rt, can we count that in? pls do some more response guys! so that we can keep this goin.

 

[Sinatra Frank]

ethmoidal sinus.. found in the nasal cavity.. its actually "ethmoidal air cells..
u have to know the divisions and where do they open to..

middle.ethmoidlal air cell-middle meatus ( as ethmoid bulla)

post ethmoidal cells -superior meatus

ant ethmoidal cells -semilunar hiatus.. (found on middle meatus)

the only thing which opens to inf meatus is the nasolacrimal duct..

 

[Sinatra Frank]

oh i forgot.. mylohyoid doesnt involve in mastication..
it serves as the floor of the oral cavity " diaphragma oris "

 

[njsmahal]

thank you gaya! but the liver is supplied by the hepatic artey with the oxygenated blood and the portal vein is the deoygenated rt, can we count that in? pls do some more response guys! so that we can keep this goin.

ya liver has dual blood supply thats why it always has red infarct not pale.

 

[superstar2008]

Thank you folks! Yeah, me too thought about the ethmoidal air cell drainages, since the question was different I just wanted to check. Middle ethmoidal air cells drain into the hiatus and ant air calls in the bulla ethmoidalis. Feel free to correct me.