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Physiology
Exam1: Slide Set 4
18
Physiology
Undergraduate 3
02/07/2010

Additional Physiology Flashcards

 


 

Cards

Term
how are metabolic rate and weight related?
Definition
as body wieght increases, MR decreases exponentially.
Term
what are the differnt modes of heat exchange between an animal and the environment?
Definition
conduction, convection, radiation and evaporation
Term
what part of the body produces the most heat in humans?
Definition
the head
Term
what body part helps to regulate body temperature?
Definition
hypothalamus
Term

physiological setpoint for body temp of:

 

mammals

monotremes

birds

Definition

37 C

30.5 C

40-42 C

Term

place the following terms in a graph:

 

resting metabolic rate

thermoneutral zone

lower-critical temperature

upper-critical temperature

Definition
[image]
Term
basal metabolic rate of humans (range)
Definition
6-9 kJ/minute
Term
what is the effect of body size/BMR on weekly food requirements?
Definition
proportionate to their weight, small animals eat WAY more than larger animals to accomodate their high metabolic rates
Term
what is Vo2max?
Definition
maximum o2 consumption during exersize
Term
why does metabolic rate increase with body temp?
Definition

more kinetic enercy increase the chance of substrates hitting enzymes

 

higher energy molecules more frequently collide and with greater force than low energy molecules.

 

 

Term
if an organism who usually lives in cold temperature acclimates to slightly warmer temperatures what does it do to its metabolic rate?
Definition
it deacreases the metabolic rate to save energy
Term
what orgnisms can be described using basal metabolic rate?
Definition
mammals
Term
what term is used to describe the metabolic rate of ectotherms?
Definition
standard metabolic rate
Term
what types of animals sunbatha dn what are the phases of warming they experience?
Definition

snakes and turtles

 

warming phase, plateau phase, cooling phase

Term
when is a body temp in the thermal neutral zone?
Definition
at rest and fasting
Term
which mammalian organ generates the most heat on a heat per gram basis?
Definition
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