and Directions Examples of Prefixes for Numbers Prefix Meaning Examples Uni mono One Unilateral Tri Three Tricuspid Quadri Four Quadriplegic Septi Seven Septuplet Nona Nine ID: 715189
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Slide1
Chapter
5
Numbers, Positions,
and DirectionsSlide2
Examples of Prefixes for Numbers
Prefix
Meaning
Examples
Uni
- (mono)
One
Unilateral
Tri-
Three
Tricuspid
Quadri
-
Four
Quadriplegic
Septi
-
Seven
Septuplet
Nona-
Nine
Nonan
Multi-
Many (more than one)
Multicellular
Hemi-
Half, also one-sided
HemianopsiaSlide3
Examples of Prefixes
for Positions and Directions
Prefix
Definition
Anterior
Situated
at or directed toward the front; opposite of posterior
Posterior
Directed toward or situated at the back;
opposite of anterior
Eversion
A turning
inside out; a turning outward
Lateral
Midline of the
body; pertaining to the side
Bilateral
Having two sides;
pertaining to the sideSlide4
Examples of Prefixes
for Positions and Directions
Prefix
Definition
Lithotomy
Position in which the patient lies on his or her back, legs flexed on the thighs, thighs flexed on the abdomen and abducted
Oblique
Slanting; incline
Proximal
Toward the center or median line; the point of attachment or originSlide5
Apothecaries weight:
System used for measuring and weighing drugs and solutions, precious metals, and precious stones. Fractions are used to designate amounts (i.e. iss = one and one-half
).
Avoirdupois weight:
The system of measuring and weighing used in English- speaking countries for all commodities except drugs, precious stones, and precious metals (i.e. pound =
lb
).Metric System: A system of weighing and measuring based on meter and having all units based on the power of ten.
Units of Weight and MeasurementSlide6
Some Common Weights and Measures
Measure
Equivalent
Measure
Equivalent
3 tsp
1 T
1 fl oz.
30 g
2 T
1 ox
½ c
120 g
4 T
¼ c
1 c
240 g
8 T
½ c
1 lb
454 g
16 T
1 c
1 g
1 ml
2 c
1 pt
1
tsp
5 ml
4 c
1 qt
1 c
240 ml
4 qt
1 gal
1 qt
960 mlSlide7
salping
/o
Versus
salping
/o
salping
/o = uterine (fallopian) tube, e.g., salpingitis
(
sal
-pin-gi-tis) refers to inflammation of the fallopian tubesalping/o = auditory (Eustachian) tube, e.g., salpingitis (sal-pin-ji-tis) refers to inflammation of the Eustachian tube
Confusing Medical TerminologySlide8
-
tropia
Versus
-
tropin
-
tropia
=
turning, e.g.,
anatropia (an-ah-tro-
pe
-ah) refers to upward deviation of the visual axis of one eye when the other eye is fixed.-tropin = an affinity for, stimulating, e.g., thyrotropin (thi-rot-rah-pin), a thyroid-stimulating hormone; a hormone of the anterior pituitary gland having an affinity for and specifically stimulating the thyroid gland
Confusing Medical TerminologySlide9
bi-
Versus
bi/o
bi-
= two, twice, double, e.g., bicuspid
(
bi-
kus-pid) refers to the valve that is situated
between the left atrium and
the
left ventricle of the heart
bi/o or bio- = life, pertaining to life, e.g., biology refers to the study of life
Confusing Medical Terminology