Alterations In Temperature Regulation

Question 1

Hypothalamus

Answer 1

• thermal control center

- received and released signals of heat

Question 2

Vasodilation

Answer 2

• dilates blood vessels, which decrease blood pressure

- heat loss

Question 3

Vasoconstriction

Answer 3

• constricts blood vessels, which increases blood pressure

- heat gain

Question 4

Shivering

Answer 4

-heat gain

Question 5

Conduction

Answer 5

• direct transfer of heat through contact

Question 6

Evaporation

Answer 6

• loss of heat through conversion of water to gas

Question 7

Radiation

Answer 7

• emission of electromagnetic radiation

- heat loss

Question 8

Thermogenesis

Answer 8

Process of heat production in organisms

Question 9

Convection

Answer 9

Heat transfer through the circulation of air currents

Question 10

Pyrexia

Answer 10

Raised body temperature (aka fever)

Question 11

Pyrogens

Answer 11

Chemicals that affect the hypothalamus which regulates body temperature

Question 12

Thermostatic set point also increased by?

Answer 12

• shivering
• sweating
• vasoconstriction
• vasodilation

Question 13

4 Stages of Fever

Answer 13

1. Prodomal
2. Chill
3. Flush
4. Defervescence

Question 14

Prodomal

Answer 14

-mild headache, fatigue, malaise

Question 15

Chill

Answer 15

-uncomfortable sensation; cold and shaking

Question 16

Flush

Answer 16

-skin warm and flushed

Question 17

Defervescence

Answer 17

Initiation of sweating (getting better)

Question 18

4 Patterns of Fever

Answer 18

1. Intermittent
2. Remittent
3. Sustained or Continuous
4. Recurrent or Relapsing

Question 19

Intermittent

Answer 19

Temperature returns to normal at least once every 24 hours

Question 20

Remittent

Answer 20

Temperature does not return to normal and varies in either direction

Question 21

Sustained or Continuous

Answer 21

Temperature remains above normal with minimal variation

Question 22

Recurrent or Relapsing

Answer 22

Episodes of fever lasting as long as several days with one or more days of normal temperature

Question 23

Fever & Heart Rate

Answer 23

No increase in HR may indicate:
- legionnaire disease, drug fever

Higher than expected increase in HR may indicate:
- hyperthyroidism, pulmonary emboli

Question 24

Fever

Answer 24

Alteration in temperature due to pyrogens

Question 25

Hyperthermia

Answer 25

Increase in temperature that occurs when the body absorbs/produces more heat than it can dissipate

Question 26

Orthostatic Hypotension

Answer 26

Form of low blood pressure that happens when standing up (too fast, light headed)

Question 27

Hypertension

Answer 27

High blood pressure