Section 1 - Anatomical Terms and Imaging, Vertebral Column, Back Muscles

ANAT 391 Pre-midterm. Lecture 1: Anatomical Terms and Imaging, Vertebral Column, Back Muscles

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Describe the Anatomical Position.
- standing position
- body standing errect, facing ahead, limbs straight, feet pointed forward, arms by sides with palms facing forward and fingers extended
- the position in which the body is placed in order to facilitate anatomical description; looking at positional relationship of structures
What are the three main planes for the body?
1) Coronal or Frontal Planes

2) Sagittal Planes

3) Transverse or Horizontal Plane
What are coronal/frontal planes?
- planes that pass through the body, divide the body into anterior and posterior parts
- division of the anterior and posterior part of the body is indefinite, not necessarily equal
What are sagittal planes?
- planes that pass through the body vertically (at right angle to the coronal planes)
- divide body into right and left parts
- Median Plane (or Medial Sagittal Plane) is the specific plane that divides body into equal halves
- all other sagittal planes called parasagittal planes
What is the Median Plane?
- also called Medial Sagittal Plane
- specific sagittal plane that divides body into equal right and left halves
What are the Parasagittal Planes?
- sagittal planes that pass through body parallel to the median plane
- divide body into right and left sides, but not equal division into right and left halves
What is the transverse or horizontal plane?
- divides body into superior and inferior parts
- not necessarily equal
What does "Superior" mean?
- nearer to head
- synonymous with term "cranial"

What does the term "Inferior" mean?
- nearer to feet
- synonymous with term "caudal"
What does ther term "Anterior" mean?
- nearer to front
- aynonymous with "ventral"
What does the term "Posterior" mean?
- nearer to back
- synonymous with "dorsal"
What does the term "medial" mean?
- nearer to median plane
- "X is on medial side of Y"
What does the term "Lateral" mean?
- farther from median plane
- "X is on lateral side of Y"
What does the term "Proximal" mean?
- nearer to trunk or point of origin (of a limb etc)
- closer to root of limb/region
What does the term "distal" mean?
- farter from trunk or point of origin (of a limb etc)
- away from root of limb/region