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Biology Lab 5: Mammalian Anatomy


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What does the tail of the rat tell us about the ancestry of the rat?
it had reptilian ancestry
What is the best way to tell a male rat from a female rat?
the 3 holes, and the female has nipples
What kind of gland is the parotid gland? and what is its function?
produces enzymes that breaks down starch
What is amylase?
and enzyme that breaks down starch
What is the passageway of air, respiratory system?
air->nasal passages->larynx->trachea->
What are alveoli good for?
warms, filters and moistens air
What is the pathway of food?
stomach-small intestines-large intestines-anus
What is the caecum? what is its function?
blind pouch off intestines, off appendix, breaks down plant products mainly used digestive
What is the difference between tidal volume and vital capacity?
vital capacity is the total breathing capacity, tidal volume is the amount of air inhaled or exhaled in a single breat
Why is the left ventrical thicker?
it is pumping blood to the whole body
Why are arteries thicker?
because they push the blood away from the body
What is the pathway of blood?
right atrium-right ventricle-pulmonary artery-lungs-pulmonary veins-left atrium-left ventrcle-aorta
What is different about the pulmonary veins and arteries compared to the rest of the veins and arteries?
the pulmonary artery is the only arter that carries deoxygenated blood, and pulmonary vein is the only vein that carries oxygenated blood
What is the hepatic portal vein?
connects the stomach and liver, this the way enzymes make their way
What is the function of the small intestines?
used for enzymatic digestion, digests carbs. and fats, nutrient absorption and water resorption
What is the function of the large intestines?
functions to complete water resorption from waste products, lead to rectum
What is the function of the pancreas?
digests carbs, fats, proteins, secretes enzymes and bicarbonates

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