Chemoreceptor Organs

Question 1

what do the chemoreceptor organs do?

Answer 1

• sense changes in blood CO2, O2 tension, pH
• regulate respiration and circulation

Question 2

what are the two most important chemoreceptor organs?

Answer 2

aortic body (base of heart)
carotid body (bifurcation of the common carotid artery)

Question 3

we only need to know some neoplasms of the chemoreceptor organs

Answer 3

Question 4

what is a chemodectoma?

Answer 4

a paraganglioma made of chemoreceptor cells
(paragangliomas are neoplasms of chromatffin cells, a type of nerve cell)

Question 5

which chemoreceptor organ gets chemodectomas more?

Answer 5

aortic body > carotid body

Question 6

Chemodectomas can be benign and malignant. tell me the aortic body gets which one more commonly? what about the carotid body?

Answer 6

aortic: adenoma > carcinoma
carotid: carcinoma > adenoma

Question 7

chemodectomas are most common in what species/signalment?

Answer 7

brachycephalic dog breeds

Question 8

what is the significance of chemodectomas?

Answer 8

not functional, but space occupying, so could impact surrounding organs (like the heart oof ow ouchie that ones bad)

Question 9

what dis

Answer 9

malignant chemodectoma of the aortic body

Question 10

what dis?

Answer 10

malignant chemodectoma of the aortic body