Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
Related questions
Question
1. How did temperature affect heart rate? What do you suppose is a consequence of being a
poikilotherm?
2. Why is the Q10 a useful concept?
Transcribed Image Text:Temperature vs. Heart rate s
60
40
20
10
20
30
40
Temperature (°C) /
Heart rate (BPM)
Transcribed Image Text:Effect of temperature on frog heart rate
Temperature
Heart Rate
Calculated
(°C)
(ВРМ)
Q10
Cold
10
25.65
not
applicable
Room Temp
30
39.37
1.24
Warm
40
47.50
1.21
Note: the Q10 is the ratio (or rate of change) of a
chemical or biological system at two temperatures that
are 10°C (18°F) apart. Passive processes in the body (for
example, diffusion) have Q10 ratios of ~1.3, whereas
active processes in the body (for example,
metabolism) have Q10 ratios of ~2.3.
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