human physiology
DESCRIPTION
Human Physiology. Physiology 1 Section 3056 – Mon Lab Section 3057 – Wed Lab Dorena Rode [email protected] 577-0379 8am – 8pm. Course Web Site www.dorenarode.com/physiology. Lecture notes Study guide Old tests Study questions Syllabus Links to other resources. Web Check In. - PowerPoint PPT PresentationTRANSCRIPT
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Human Physiology
Physiology 1 Section 3056 – Mon LabSection 3057 – Wed Lab
Dorena [email protected] 8am – 8pm
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Course Web Sitewww.dorenarode.com/physiology
Lecture notes Study guide Old tests Study questions Syllabus Links to other resources
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Web Check In
Why? To get email alerts, updates, and study
tips To take pretest (4 easy extra credit
points) Monitor grades Upload your student report
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Course Requirements
Attendance at lecture and laboratory 11 quizzes (drop lowest two) 3 midterms Final
Mostly just a fourth midterm Small section cumulative final
Written/Oral Report Sign ups will be in lab
Lab assignments; lab quizzes More details later
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How to study for this class
Use Chat Room to meet study partners
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Science in Perspective
Everything
Truth
PhysiologyHow the Body Works
Web of Life
Whole Picture
Complex Whole
Scientific Knowledge
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Science in Perspective
Exercise decreases resting heart rate
Aspirin decreases heart attacks
How the heart beats
Other heart related studies
Assumptions about heart
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Scientific Method FOX pg 4-6
1. Observing natural phenomenon 2. Guessing “How”
(formulate hypothesis) 3. Design experiment 4. Do experiment 5. Collect/analyze data 6. Draw conclusions
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Biological Organization
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cells
Basic unit of structure and function in the body
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tissues
Groups of cells with a similar function.
muscular
nervous
epithelial
connective
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organs
Anatomical and functional units formed
by collections of the four tissue types.
Heart
Liver
Skin
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systems
Collections of organs
that perform a common function.
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systems
nervous
endocrine
musculoskeletal
circulatory
respiratory
urinary
digestive
immune
reproductive
integumentary
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Homeostasis
State of dynamic internal constancy.
We maintain homeostasis by using negative feedback mechanisms.
Sensor EffectorIntegration Unit
Set Point
Sensor EffectorIntegration Unit
Set Point
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Essential Parameters
heat (measured as temperature) pH oxygen ion concentrations water blood pressure glucose
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pH regulation
What is pH?
pH = -log [H+]
As hydronium ion concentration goes up the pH goes down.
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pH regulation
Why do we control pH?
Chemical reactions happen at only certain pH
Proteins are active at certain pH
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pH regulation
How do we control pH?
1. Normal plasma pH = 7.42. Bicarbonate buffers small changes in pH3. We do something and pH drops4. Change in pH is detected by sensor
(aortic and carotid bodies)5. Signal sent to control center
typically either a hormone or nerve impulse6. pH value compared to set point7. If outside set point range, then a signal is sent to an effector
Effectors are typically a muscle or gland. Once activated the cells react to the stimulus and typically produce either a protein or release vesicles.
8. Effectors involved in pH regulation:pulmonary system, renal system, bones
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Lab this week: Lab 1 Lab 2(skip question 5) Should Bill buy Sammy?