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Lecture 1 Intro to Anatomy and Physiology Body regions organ systems body cavities biological molecules PowerPoint PPT Presentation


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Lecture 1 Intro to Anatomy and Physiology Body regions organ systems body cavities biological molecules. Characteristics of all life forms. O rganization R eproduction C hange – grow, use energy A dapt populations respond to their environment – They Evolve. What is anatomy? Anatomy

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Lecture 1 Intro to Anatomy and Physiology Body regions organ systems body cavities biological molecules

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Lecture 1Intro to Anatomy and PhysiologyBody regionsorgan systemsbody cavitiesbiological molecules


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Characteristics of all life forms

O rganization

R eproduction

C hange – grow, use energy

A dapt populations respond to their environment – They Evolve


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  • What is anatomy?

    • Anatomy

    • Versus physiology

  • Levels of organization


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Eleven Organ Systems:What does each do?How are they studied?Gross anatomycytologyhistologyinteractions - homeostasis


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Homeostasis

  • The maintenance of a stable internal environment of a living organism within life sustaining, physiological limits.

  • Involve Negative Feedback loops which require:

    • Sensor or receptor

    • Control center

    • effector


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Negative & Positive Feedback Loops

  • Negative feedback loop

    • original stimulus reversed

    • most feedback systems in the body are negative

    • used for conditions that need frequent adjustment

    • body temperature, blood sugar levels, blood pressure

    • What happens if control fails?

  • Positive feedback loop

    • original stimulus intensified

    • seen during normal childbirth


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  • Dorsal Cavities

    • Brain is enclosed in the _______________

    • Spinal Cord in enclosed in _____________

  • Ventral Cavities

    • Above the diaphragm:_________________

      • Divided into/contains:_____________________

      • Protected by rib cage

    • Below the diaphragm: _________________

      • Superior part – contains stomach + liver + others:

      • Inferior part – within coxal bones:_____________


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Body Regions

Axial: refers to _________________

Appendicular: refers to _____________

Body region names

Relate to anatomical names

Part of the jargon

See p 18 and fill-in exercise in lab manual


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  • Planes and Sections

  • Sagital

    • Mid-sagital

    • Para-sagital

  • Frontal

  • Transverse


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Directional Terms

  • Right - Left

  • Medial – Lateral

  • Distal – Proximal

  • Dorsal – Ventral = Anterior – Posterior

  • Superior – Inferior = Cranial – Caudal

  • Superficial - Deep


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  • A plane which divides the body into left and right parts would be a ___________.

  • A ____________ plane separates dorsal and ventral parts of the body.

  • The stomach is ___________ to the diaphragm.

  • The carpal region is ___________ to the radius and ulna.

  • The knee is __________ to the tibia.

  • The urinary bladder is located in the __________ cavity.

  • Review others from 17-20 in lab manual


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Scientific Method – How we know what we know

  • Observation leads to question – why, what is relationship? … etc.

  • Possible answer – explanation = ___________

  • Test of explanation = _______________

  • Test may support or reject explanation

  • Theory – a generally accepted concept

    • Major theories in biology:


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