Exam 1 Body Planes Bio

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26 Terms

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horizontal

divides the body into superior and inferior ( up and down)

<p>divides the body into superior and inferior ( up and down)</p>
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frontal

divides the body into anterior and posterior (front and back)

<p>divides the body into anterior and posterior (front and back)</p>
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sagittal

divides the body into right and left

<p>divides the body into right and left</p>
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negative feedback

oppose change by creating a response and tries to return back to homeostasis

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Positive feedback

enhances a response and amplifies or accelerates change

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homeostasis
the relatively constant internal status maintained by the body despite changes in the environment
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1 component to homeostatic control: Receptor (sensor)
Monitors the environment and responds.
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1 component to homeostatic control: Control center (Integrator)
Analyzes the input and compares to what it should be.
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1 component to homeostatic control: Effector
Carries out the control center's response to return to the homeostatic level.
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Inferior

away from the head/ towards the feet

Ex: the head is inferior to the feet

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Anterior

in front of the body

Ex: the ribs are anterior of the spine

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Lateral
goes away from the midline
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Superior

towards the head or upper part of a structure of the body

Ex: the head is superior to the feet

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midline
splits the body down the midline
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proximal

Closer to point of attachment to a limb or structure

Ex: the elbow is proximal to the head

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medial
goes in towards the midline
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distal

farthest away from point of attachment or origin of the body part

distal=down

Ex: the elbow is distal to the shoulder because the elbow is below the shoulder.

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posterior

back of/behind

Ex: the calf is posterior to the shin

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deep

away from the body surface, more internal

Ex: the lungs in relation to the ribcage

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superficial

toward or at the body surface

Ex: the skin is superficial to the ribcage

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Cytology
study of cells
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histology
study of tissues
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neurology
study of nerves
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reginal anatomy
organization of the body into parts (regions)
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systematic anatomy
body structure is studied system by system
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8 levels of organization
atoms, molecules, organelles, cells, tissues, organs, organ system, organisms