Microbiology

Question 1

What is phoresis? Example?

Answer 1

Traveling together, hitching a ride, no interdependency

Question 2

What is mutualism? Example?

Answer 2

Benefit to both

Question 3

What is commensalism? Example?

Answer 3

One partner benefits, the other isn’t harmed

Question 4

What is parasitism? Example?

Answer 4

Generally, one partner is harmed

Question 5

Trichinella spiralis infection: life cycle

Answer 5

Life cycle: domestic cycle –> larvae in intestine –>mature (30-40 hrs)–> adults hatch new –> mucosa –> striated muscle

Question 6

Trichinella spiralis infection: transmission

Answer 6

Transmission: under cooked pork

Question 7

Trichinella spiralis infection: Pathology

Answer 7

alters myocytes, collagen

Question 8

Trichinella spiralis infection: Sx and labs

Answer 8

periorbital swelling, splinter hemorrhages, fever, GI

Labs: eosinophilia

Question 9

Trichinella spiralis infection: histology

Answer 9

nurse cells and cyst formation in muscles

Question 10

Trichinella spiralis infection: Tx

Answer 10

albendazole, mebendazole, corticosteroids (keep adult parasites alive)

Question 11

microsporidiosis: who’s at risk?

Answer 11

immunosuppressed

Parasites cause myositis in AIDS