Animal Structure and Function - PowerPoint PPT Presentation

Loading...

PPT – Animal Structure and Function PowerPoint presentation | free to view - id: 152983-YzkyN



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Animal Structure and Function

Description:

Animal Structure and Function. Anatomy vs. physiology. Anatomy is structure. Physiology is function ... Body size and shape affect interactions with the environment ... – PowerPoint PPT presentation

Number of Views:445
Avg rating:3.0/5.0
Slides: 23
Provided by: e200702288
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Animal Structure and Function


1
Chapter 40
  • Animal Structure and Function

2
Anatomy vs. physiology
  • Anatomy is structure
  • Physiology is function

3
Tissues
  • Groups of cells with common structure and
    function
  • 4 categories
  • Epithelial covers and lines
  • Connective binds and supports other tissues
  • Nervous senses stimuli and transmits signals
  • Muscle movement due to contraction

4
Figure 40.1 The structure and function of
epithelial tissues
5
Figure 40.2 Some representative types of
connective tissue
6
Organ systems of animals are interdependent
  • 2 major body cavities thoracic and abdominal
  • Organs are supported by mesenteries and/or fluid
  • Organs make up organ systems

7
Table 40.1 Organ Systems Their Main Components
and Functions in Mammals
8
Body size and shape affect interactions with the
environment
  • Multicellular, but need aqueous environment with
    large surface area for successful exchange of
    gases and liquids

9
Figure 40.7 Contact with the environment
10
Figure 40.8 Internal exchange surfaces of
complex animals
11
Figure 40.8 Lining of the small intestine
12
Figure 40.8 Lung
13
Mechanisms of homeostasis moderate changes in the
internal environment…
  • Depends of feedback circuits
  • Control system has 3 components
  • 1. receptor detects change
  • 2. control center processes info and
  • directs response
  • 3. effector makes appropriate response

14
Negative feedback
  • When a change in the variable being monitored
    triggers the control mechanism to counteract
    further change in the same direction…
  • Prevents small changes from becoming too large
  • This type is most common control mechanism in
    animals

15
Figure 40.9a An example of negative feedback
Control of room temperature
16
Figure 40.9b An example of negative feedback
Control of body temperature (Layer 1)
17
Figure 40.9b An example of negative feedback
Control of body temperature (Layer 2)
18
Positive feedback
  • Involves a change in some variable that triggers
    mechanisms that amplify rather than reverse the
    change.

19
Bioenergetics
  • Chemical energy is needed for
  • growth
  • physiological processes
  • maintainence and repair
  • regulation
  • reproduction
  • ATP powers cellular work first, allowing cells,
    organs, and organ systems to keep animal alive….
  • Animals are heterotrophs that get chemical energy
    from food through enzymatic hydrolysis and the
    absorption of energy-containing fuel molecules

20
Figure 40.10 Bioenergetics of an animal an
overview
21
Metabolic Rate
  • Amount of energy an animals uses in a unit of
    time
  • 2 bioenergetic strategies
  • 1. endothermic
  • 2. ectothermic
  • Amount of energy that it takes to maintain each
    gram of body weight is inversely related to body
    size -- why?
  • See page 845

22
BMR, SMR, Energy Budgets
  • See pages 845-847 and define each in terms of
    examples….
About PowerShow.com