recovery, patients often feel depressed,
lack energy, and have daytime sleepiness.
The presence of only one
The most probable causes are
absence of the testis.
that is used as a flavour enhancer
and seasoning. Monosodium glutamate
(MSG) is the sodium salt of an
. A short-lived illness involving pain
in the neck and chest,
ing hot, and a headache may occur in
some people after eating food to which
large amounts of MSG have been added.
The rounded swelling over
the front of the
pubis, which becomes covered with hair
at puberty, is formed by a pad of fatty
tissue under the skin.
Fracture of the
just below the elbow, with disloca-
tion of the
from the elbow joint.
ceptor antagonist drug
that is used in
the management of asthma. It is not
used to treat acute attacks.
Disorders in which the
emotions are affected:
Rounded facial appearance
that is a feature of
Also called pathologi-
cal anatomy, the study of the structural
changes that occur in body tissues as a
result of disease, especially the changes
visible to the naked eye.
The state or condition of
being diseased. In medical statistics,
the morbidity ratio is the proportion of
diseased people to healthy people in a
Another name for
rived from the opium poppy. Morphine
is given to relieve severe pain caused by
serious injury, and
Morphine blocks the transmission of
pain signals at sites called opiate recep-
tors in the
drug also induces a sense of well-being
or euphoria. Side effects include drow-
siness, dizziness, constipation, nausea,
vomiting, and confusion. Long-term use
of morphine may lead to
, with severe flu-like symptoms
when the drug is withdrawn (see
A condition in which one or
more hard, flat patches develop on the
skin. It is a type of
confined to the skin. Although harmless,
the condition can be disfiguring.
The death rate, which is the
number of deaths per
) of the population per year.
Mortality is often calculated for specific
groups. For example,
measures the deaths of live-born infants
st year of life.
Standardized mortality allows compari-
son of the death rate in, for example, an
occupational or socioeconomic group
with that for the entire population. (See
life expectancy; maternal mortality.)
A stage in the development of
ized egg divides repeatedly as it travels
When it forms a
ball of cells, it is called a morula.
The presence of 2 or more
groups of cells containing different
genetic material within one person.
Some people with syndromes caused
have mosaicism. Depending on
the proportion of abnormal cells and
the type of abnormality, they range from
looking physically normal to having fea-
tures typical of the syndrome.
Mosquitoes are flying
insects found throughout the world.
The females bite humans or animals to
obtain blood, which they need to pro-
duce eggs. The males do not bite. A
doctor should be consulted if there is a
severe skin reaction to a mosquito bite.
As well as being irritating, mosquito
bites can also transmit diseases. The
main disease-transmitting mosquitoes
belong to 3 groups: