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23 Cards in this Set
- Front
- Back
- 3rd side (hint)
Symmetry
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similarity of form or arrangement on either side of a dividing line or plane
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Asymmetry and example of organism that is
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Any line or plane through the center that does not result in equivalent parts
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Some protists (I.E. Amoeba)
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Radial Symmetry and example
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Any cut passing through center results in two halves essentially identical.
Does not have radial symmetry as viewed from side |
I.E. a pie, coin, petri dish
Starfish, sea anemone, sand dollar |
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Bilateral Symmetry
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Most common symmetry in animal kingdom.
Only ONE cut can be made which will yield two essentially alike pieces |
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Median Plane and compatibility with which type of symmetry
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Aka Midsagittal plane.
Vertical Longitudinal plane passing through the organism dividing it into essentially identical halves (right and left) |
Bilateral symmetry only
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Sagittal Plane and compatibility with which type of symmetry. Also another name for it
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Any vertical longitudinal plane through organism, median or any plane parallel
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Non median plane called parasagittal.
Bilateral symmetry only |
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Frontal Plane and compatibility with which type of symmetry. Also another name for it
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Any longitudinal plane which occurs at right angles to the sagittal plane
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Aka Coronal Plane
Bilateral symmetry only |
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Cross Plane and compatibility with which type of symmetry. Also another name for it
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Any plane or section at right angles to both sagittal and frontal planes (in bilateral)
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Aka Transverse Plane
Both. |
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Radial Plane and compatibility with which type of symmetry.
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Any plane passing through the center and along the central axis.
Infinite number of cuts can be made, all resulting in two identical portions. |
Radial symmetry only
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Tangential Plane and compatibility with which type of symmetry.
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Any plane or section parallel to central axis and not passing through the center
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Radial symmetry only
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Transverse Plane and compatibility with which type of symmetry. Also another name for it
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A plane or section at right angles to the radial (and tangential)
(in Radial) |
Aka cross plane
Both |
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What are the 3 pairs of terms referring to Head and Rear end.
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Superior and Inferior
Cranial and Caudal Anterior and Posterior |
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What is Superior & Inferior?
Applies to what organisms? |
Superior - the head, upper end
Inferior - the rear, lower end |
Used for humans only
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What is Cranial & Caudal?
Applies to what organisms? |
Cranial- the head end
Caudal- the rear end |
Cranial used in animals with brain case
Caudal for animals with tail only |
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What is Anterior & Posterior?
Applies to what organisms? |
Anterior- the part of the body that goes forward in locomotion (the front)
Posterior- the part of the body that is not forward in locomotion (the rear) |
Anterior- the head end in 4 legged animals.
The front or belly side of humans. Posterior- The rear end of 4 legged animals. The backside of humans |
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What are the 2 pairs of terms referring to the back side and belly side?
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Dorsal and Ventral
Anterior and Posterior |
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What is Dorsal & Ventral?
Applies to what organisms? |
Dorsal- the backside of 4 legged animals.
Ventral- belly side or underside of 4 legged animals |
Both
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What is Anterior & Posterior?
Applies to what organisms? |
Anterior- the front surface of a human
Posterior- the back surface of human |
human only
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What are the 3 pairs of terms referring to points on midline or center?
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Medial and Lateral
Central and Peripheral Superficial and Deep |
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What is Medial & Lateral?
Applies to what organisms? |
Medial- toward or on the midline of the body or organ
Lateral- either away from or to the side of the midline of body or organ |
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What is Central & Peripheral?
Applies to what organisms? |
Central- the center of a spheroidal part or organ
Peripheral- along the outside of a spheroidal part or organ |
???
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What is Superficial & Deep?
Applies to what organisms? |
Superficial (external)- on the outside
Deep (internal)- on the inside |
???
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What is Proximal & Distal?
Applies to what organisms? |
Proximal- nearer to the point of attachment to the body axis or trunk in case of extremities; nearer to point of reference on internal organ
Distal- farther from the point of attachment to the body axis or trunk in case of extremities; farther from point of reference (internal organ) |
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