CBIO 2200 Lecture Notes - Lecture 1: Helen Keller, Homeostasis, Positive Feedback

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Published on 22 Aug 2016
Course
Professor
Notes for CBIO 2200 CRN17428 CH1 Introduction to the Human Body
(8/11/2016)
**We have a quiz over the syllabus next class (8/16)
**A chemistry worksheet will be posted on ELC and will be due in-class for
a quiz grade
**Suggestion to purchase an anatomy-coloring book
**There will most likely be an online lab manual provided to us
1. Why study Anatomy and Physiology?
- We must understand normal structure and function so you’re able to
identify abnormal or incorrect function
-We must understand mechanisms of therapies used to treat dysfunction
-Identify targets for new therapies
-If you understand what is wrong with the patient, you can compose a
mechanism to treat them
We are trying to understand “How does the human body work?”
2. Pathophysiology vs. Physiology
Pathophysiology: functional changes associated with disease and aging
Anatomy: the branch of biology concerned with the study of the structure of
organisms and their parts.
Physiology: The branch of biology that deals with the study of organ function and
interaction.
The branch of biology that deals with the normal functions of living organisms
and their parts.
3. Levels of organization of the human body:
a) Chemical
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b) Cellular
c) Tissue
d) Organ
e) Organ system
f) System
Necessary life functions of humans:
-Maintain boundaries
-Movement (both walking and the movement of substances in the
internal environment)
-Respond to stimuli in the environment
-Metabolism/Digestion
-Excretion
-Reproduction
-Differentiation
-Growth
4. HOMEOSTASIS
a) The “overall job” of every system in the body
b) Balance!
“Condition of equilibrium (balance) in the body’s internal environment..”
Interplay of many, many processes
Maintain certain, particular internal conditions
-Body temperature
-Blood glucose
-Internal chemical reactions operate at specific pHs (certain enzymes work best in
certain pHs. Proteins can become denatured at the wrong temperatures)
Why did we watch a video about Helen Keller? Helen Keller had scarlet fever and
was sick for more than a week, losing her sight and hearing. Because the temp was
disrupted and she therefore lost sight and hearing, it’s interesting to see the
correlation.
5. Feedback and feedback systems
a) Maintain homeostasis
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