ANPH Exam 4 Questions and Verified
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What is the main function of parathyroid hormone? - ✔✔increase plasma
[Ca]
How does PTH function? - ✔✔transfer Ca from bone fluid --> plasma,
increase osteoclast activity, increase kidney resorption, activate vitamin D
What is the main function of. calcitonin? - ✔✔decrease plasma [Ca]
where is calcitonin produced? - ✔✔C cells of thyroid gland
how does calcitonin function? - ✔✔inhibit osteoclast activity, decrease
transfer of Ca from bone fluid to plasma
How does vitamin D function in calcium regulation? - ✔✔it increases Ca
and PO4 absorption by the small intestines.
what is another word for vitamin D? - ✔✔cholecalciferol
How is vitamin D activated? - ✔✔activated by the liver and kidney after sun
light exposure. Kidney is activated by decreased [Ca] and [PO4]
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what is hyperparathyroidism? - ✔✔XS PTH, causes osteoporosis and
kidney stones
what does vitamin D defictency cause> - ✔✔rickets in kids, osteomalacia in
adults. causes soft and deformed bones
what is parturient paresis? - ✔✔milk fever, caused by constant elevated
Ca2+ in plasma in dairy cattle
what kind of heart do reptiles have? - ✔✔3 chambered heart
what kind of heart do crocodiles have? - ✔✔4 chambered heart with 2
aortas
How do mammalian and bird fetal hearts bypass the lungs until they are
fully formed/ - ✔✔the foramen oval connects the two atria; the ductus
arterioles connects the pulmonary artery and aorta.
are arteries elastic? - ✔✔yes. they change radius to conduct blood
pressure and resistance.
what conducts blood flow during ventricular diastole? - ✔✔arterial recoil
due the the elasticity.
what is the MAP - ✔✔93mmHg in arteries; 37mmHg at capillary entrance.