Study Group

Question 0

What is roseola infantum?

Answer 0

Affects young children, caused by HHV-6 & HHV-7, abrupt high fever, after fever there is a rashthat starts on neck & trunk but spreads to extremities & face
-Happy looking kid

Question 1

Where does chicken pox hang out?

Answer 1

Dorsal Root Ganglion

Question 2

What shouldn’t you give to mono patients?

Answer 2

Ampicillin - enlarged spleen

Question 3

Roseola?

Answer 3

Young kids, happy, high fever that turns into trunk rash that spreads to extremities

Question 4

Why was smallpox eradicated?

Answer 4

Humans are only carriers, doesn’t mutate, aren’t multiple strains

Question 5

What is ECHO virus?

Answer 5

• Fecal shedding
• Preschool spread
• Rash on trunk - like flu
• Fever

Question 6

What is Parvovirus B19?

Answer 6

• Lacy rash, very mild but very contagious
• Maculopapular rash on red cheeks - “slapped cheeks”
• Fever, muscle aches
• Begins on cheeks

Question 7

What is Rubeola?

Answer 7

Measles Virus

• Koplik spots on buccal mucosa that proceed to rash
• widespread maculopapular

Question 8

What is rubella?

Answer 8

German Measles

• Rash starts on face & spreads to down body
• Clears over 3 days
• Forchheimer spots on soft palate
• Widespread fine rash

Question 9

What is the only Arbovirus?

Answer 9

Dengue virus

Question 10

What are symptoms of dengue fever?

Answer 10

No rash on soles and palms
-High grade sudden fever, joint pain, sore throat, cough, malaise, vomiting, generalized rash after fever, appears ill & toxic

Question 11

What is the allen test looking for?

Answer 11

Blood refill of the hand while compressing the ulnar artery

Question 12

What causes the power stroke?

Answer 12

Release of phosphate from the ATP on the myosin head

Question 13

Why would you want to prolong ACh release?

Answer 13

Myasthenia Gravis

Question 14

Myasthenia Gravis

Answer 14

Creates antibodies against ACh receptors

Question 15

What does tetrodotoxin do?

Answer 15

Blocks VG Na+ channels

Question 16

When it’s hot, what does the post-synaptic neuron release on the AV shunt?

Answer 16

Ach to muscarinic receptors that causes vasodilation

Question 17

When it is cold, post-synaptic neurons release?

Answer 17

NE that binds to alpha and beta receptors and causes vasoconstriction

Question 18

What does Furosimide (Lasix) do?

Answer 18

Blocks NKCC channels in eccrine & apocrine glands

Question 19

What innervates the teres minor?

Answer 19

The lower subscapular nerve

Question 20

What causes Lambert-Eaton syndrome?

Answer 20

It’s caused by autoantibodies against Calcium channels in motor neurons resulting in inability to release ACh

Question 21

What happens in myasthenia gravis?

Answer 21

Autoantibodies are generated against nicotinic receptors in skeletal muscle

Question 22

What causes malignant hyperthermia?

Answer 22

It’s caused by a mutation of the ryanodine receptor allowing excessive release of calcium, usually triggered by anesthetics [Ca2+ induced Ca2+ release channels]

Question 23

What mutation results in Duchenne’s muscular dystrophy?

Answer 23

A mutation in dystrophin, a skeletal muscle support protein.

Question 24

Where is tetrodotoxin from and what is its abbreviation?

Answer 24

Pufferfish, other seafood, TTX

Question 25

What usually causes malignant hypothermia?

Answer 25

Anesthetics

Question 26

What innervates the triceps brachii?

Answer 26

Radial nerve (sometimes the long head is innervated by the axillary nerve!)

Question 27

What does Lambert-Eaton Syndrome cause?

Answer 27

Muscle Weakness, its autoimmune