Special Topics

Question 1

Shivering is a heat-__________ mechanism

Answer 1

Generating

Also thyroid hormone production, decreased sweating, piloerection, skin vasoconstriction

Question 2

Examples of heat loss mechanism

Answer 2

Sweating skin vasodilatation decreased heat production

Question 3

Most of the body heat is lost via _________

Answer 3

Radiation (60%)

Question 4

Pathophysiology of malignant hyperthermia

Answer 4

Defect in ryanodine (Ca2+) receptor

Question 5

Interleukin for fever

Answer 5

Interleukin-1

Question 6

Antidote for malignant hyperthermia

Answer 6

Dantrolene sodium

Question 7

Most important effect of high altitude

Answer 7

Decreased mental proficiency

Question 8

Altitude where seizure occurs

Answer 8

18,000 feet

Question 9

Acclimatization increases which enzyme and causes shift to the ____\ of the O2Hgb curve

Answer 9

Bpg mutase

Shift to the right

Question 10

Chronic mountain sickness causes

Answer 10

Right sided heart failure and pulmonary vasoconstriction

Question 11

Positive G is more dangerous. T or F?

Answer 11

True! Blood is shunted to lower extremities

Question 12

Where is blood shunted in negative G?

Answer 12

Head

Cause red out and transient psychotic disturbances

Question 13

Decompression sickness can lead to formation of ______

Answer 13

Nitrogen bubbles

Question 14

Chronic decompression sickness

Answer 14

Caisson disease

Question 15

Raptures of the depths happen at ____ feet

Answer 15

250 feet

Question 16

Terminal velocity reached within _____seconds

Answer 16

12 secs

Question 17

+6-10 G can cause

Answer 17

Blackouts
LOC
death

Question 18

Oxygen supply at space missions

Answer 18

20% at 760 mmHg

Question 19

Regulation of body temperature

Answer 19

Hypothalamus