CH 1 - The Human Organism Flashcards Preview

BIOL 223 Lecture > CH 1 - The Human Organism > Flashcards

Flashcards in CH 1 - The Human Organism Deck (10)
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1
Q

What are the levels of structural organization?

A
Chemical or molecular
Cellular
Tissue
Organ
Organ system
Organism
2
Q

Homeostasis

A

The tendency toward internal balance

The existence of a stable internal environment

3
Q

Homeostatic regulation

A

The adjustment of physiological systems to maintain homeostasis

Three components

  • Receptor
  • Control center
  • Effector
4
Q

Negative feedback loop

A

The response of the effector negates the stimulus and body is returned to homeostasis

Normal range achieved

5
Q

Positive feedback loop

A

The response of the effector increases the change of the stimulus and speeds up the process

Normal range is lost

6
Q

Set point

A

Physiological value around which the normal value fluctuates

An ideal number for a specific physiological process

7
Q

What is the normal body temperature range?

A

36.7°C - 37.2°C which is 98.4°F - 98.9°F

8
Q

Symptoms

A

Subjective changes

*Pain level

9
Q

Signs

A

Objective, quantifiable changes

*Body temperature/fever

10
Q

Prognosis

A

A prediction about the possible outcome from a specific disease