Bio 220 - Symmetry, Sections, And Anatomical Orientation Terms

Front 1

Symmetry

Back 1

similarity of form or arrangement on either side of a dividing line or plane

Front 2

Asymmetry and example of organism that is

Back 2

Any line or plane through the center that does not result in equivalent parts

Hint 2

Some protists (I.E. Amoeba)

Front 3

Radial Symmetry and example

Back 3

Any cut passing through center results in two halves essentially identical.
Does not have radial symmetry as viewed from side

Hint 3

I.E. a pie, coin, petri dish

Starfish, sea anemone, sand dollar

Front 4

Bilateral Symmetry

Back 4

Most common symmetry in animal kingdom.
Only ONE cut can be made which will yield two essentially alike pieces

Front 5

Median Plane and compatibility with which type of symmetry

Back 5

Aka Midsagittal plane.
Vertical Longitudinal plane passing through the organism dividing it into essentially identical halves (right and left)

Hint 5

Bilateral symmetry only

Front 6

Sagittal Plane and compatibility with which type of symmetry. Also another name for it

Back 6

Any vertical longitudinal plane through organism, median or any plane parallel

Hint 6

Non median plane called parasagittal.

Bilateral symmetry only

Front 7

Frontal Plane and compatibility with which type of symmetry. Also another name for it

Back 7

Any longitudinal plane which occurs at right angles to the sagittal plane

Hint 7

Aka Coronal Plane

Bilateral symmetry only

Front 8

Cross Plane and compatibility with which type of symmetry. Also another name for it

Back 8

Any plane or section at right angles to both sagittal and frontal planes (in bilateral)

Hint 8

Aka Transverse Plane
Both.

Front 9

Radial Plane and compatibility with which type of symmetry.

Back 9

Any plane passing through the center and along the central axis.
Infinite number of cuts can be made, all resulting in two identical portions.

Hint 9

Radial symmetry only

Front 10

Tangential Plane and compatibility with which type of symmetry.

Back 10

Any plane or section parallel to central axis and not passing through the center

Hint 10

Radial symmetry only

Front 11

Transverse Plane and compatibility with which type of symmetry. Also another name for it

Back 11

A plane or section at right angles to the radial (and tangential)
(in Radial)

Hint 11

Aka cross plane
Both

Front 12

What are the 3 pairs of terms referring to Head and Rear end.

Back 12

Superior and Inferior
Cranial and Caudal
Anterior and Posterior

Front 13

What is Superior & Inferior?
Applies to what organisms?

Back 13

Superior - the head, upper end

Inferior - the rear, lower end

Hint 13

Used for humans only

Front 14

What is Cranial & Caudal?
Applies to what organisms?

Back 14

Cranial- the head end
Caudal- the rear end

Hint 14

Cranial used in animals with brain case
Caudal for animals with tail only

Front 15

What is Anterior & Posterior?
Applies to what organisms?

Back 15

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)

Hint 15

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

Front 16

What are the 2 pairs of terms referring to the back side and belly side?

Back 16

Dorsal and Ventral
Anterior and Posterior

Front 17

What is Dorsal & Ventral?
Applies to what organisms?

Back 17

Dorsal- the backside of 4 legged animals.

Ventral- belly side or underside of 4 legged animals

Hint 17

Both

Front 18

What is Anterior & Posterior?
Applies to what organisms?

Back 18

Anterior- the front surface of a human

Posterior- the back surface of human

Hint 18

human only

Front 19

What are the 3 pairs of terms referring to points on midline or center?

Back 19

Medial and Lateral
Central and Peripheral
Superficial and Deep

Front 20

What is Medial & Lateral?
Applies to what organisms?

Back 20

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

Front 21

What is Central & Peripheral?
Applies to what organisms?

Back 21

Central- the center of a spheroidal part or organ

Peripheral- along the outside of a spheroidal part or organ

Hint 21

???

Front 22

What is Superficial & Deep?
Applies to what organisms?

Back 22

Superficial (external)- on the outside

Deep (internal)- on the inside

Hint 22

???

Front 23

What is Proximal & Distal?
Applies to what organisms?

Back 23

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)