LABS Flashcards
How many thoracic cavities in the rat
3
Where is the thymus located?
Above the heart
What are the two main digestive sacks in the rat
Caecum and stomach
Two main secretory glands in rat digestive system
Liver & pancreas
Anterior lateral section of stomach
For food storage
Stomach to duodenum
Pyloric sphincter
Function of pancreas in rat
enzymes and endocrine glands
Function of liver in rat
Produces & stores bile
Liver receives blood from
hepatic vein and aorta
What system does the spleen belong to
Lymphatic
Sections of large intestine
Caecum, clon, rectum, anus
Function of large intestine
water reabsorption
Appearance and function of caecum
Flabby brown bag, bacteria acts on gut contents, breaking down cellulose
Shape of female reproductive system in rats
Horns shape
Orientation of trachea and oesophagus
Oesophagus is dorsal to trachea
Which comes first, soft or hard palate?
Hard then soft
Difference between glottis and epiglottis
Epiglottis is the cap of the glottis
Function/location of calcarine sulcus
runs through primary visual cortex
Function/location of mamillary body
Just dorsal of hypothalamus, reflex for smell
Location of 3rd ventricle
between/inside thalamus
Location of lateral ventricle
below corpus callosum
Sub sections of colliculi, and locations
Inferior - Sound reflex
Superior - Sight reflex
Sections and location of the brain stem
Pons, midbrain and medulla. Located below the forebrain
Sections and location of the forebrain
Basically everything other than hindbrain and midbrain
Sections and location of midbrain
Cerebral aqueducts, cerebral penduncles, sup/inf colliculi, substantia nigra
Located above/in the top of the brainstem
Sections and location of hindbrain
Pons, cerebellum, medulla, fourth ventricle, located below/around midbrain
Function/location of cerebral aqueduct
Connects 3rd & 4th ventricle, runs between midbrain and colliculi
Function/location of cerebral peduncles
Connects brainsem to thalamus. Anterior section of the midbrain
All ventricles
Lateral ventricle, 3rd & 4th ventricles
Location of 4th ventricle
From thalamus to cerebellum
Location of 3rd ventricle
Between/around lobes of thalamus
Direction of association fibres
Front and back, i.e. arcuate fassiculus
Direction of projection fibres
Up and down, i.e. internal capsule
Direction of commissural fibres
Right and left, i.e. corpus callosum
45 degree interventricular sulcus
ventral view
Vertical interventricular sulcus
dorsal view
Great veins exposed
Dorsal view
Vena cava of sheep heart
R. Ant, middle post, L. Ant
External braching of systemic arteries
Brachiocephalic and aorta
Blood vessels exposed on ventral view
Pulmonary trunk and aorta
Blood vessels exposed on dorsal view
Vena cava & fatpads
Aortic valve ant. or post. to pulmonary valve
Dorsal to pulmonary valve
Trabeculae found…
In the auricles and ventricles
What is fossa ovalis, and what is child equivalent
Between two atria, foramen ovale
What is ligementum arteriosum and what is child equivalent
Connects elastic arteries, ductus arteriosus
First branch of aorta
Coronary ostia
Function of fossa ovale function
Allows blood to cross from right to left atrium in child heart
Function of ductus arteriosus
connects arteries, because lungs don’t work in fetus
Why does the fossa ovale close
Because upon breathing, L atrial pressure exceeds right atrial pressure and forces it shut
Why does the ductus arteriosus close (becoming ligamentum arteriosum)
Because smooth muscle contracts
Function/location of cingulate gyrus
Above corpus callosum, fight flight information, connects to frontal lobe
Number of coronary ostia
2
Ligamentum arteriosus visible from dorsal or ventral view
dorsal
What is the moderator band and where is it found?
Found from wall to wall of the right ventricle, muscle purkinjie fibres for conduction
