The Saint Paul globe. (St. Paul, Minn.) 1896-1905, 1903-03-22


the degree Of development of this part of the
arm
THE PECTORALIS MAJOR is a broad thick
triangular muscle situated at the upper front
part Of the chest The broad side is attached to
the sternum or breast bone; also partly from
the collar bone above. The fibers converge to
a point near the armpit, where they unite with
its tendon, which is attached to the humerus
or bone of the upper at about one-third of
its upper surface
The action of this muscle is to depress the
point of the shoulder drawing the collar bone
closer to the ribs and drawing the arm across
the chest.
The girl who is troubled about the bones in
the neck showing should study the minute anat
omy OF this muscle
There are a great many gymnastic movements
controlled by this muscle, and unless one bears
In mind the particular part of the muscle which
Il being developed the enthusiastic devotee of
physical culture is in danger of producing lust
the opposite effect that is being aimed at
The mistake is often made of developing the
peclofaI muscles, While neglecting the eXpan-
sion of the lungs. Lung capacity and mobility
OF ches walls are by no means synonymous with
large chest muscles. In fact an excessive de-
Neiopnent of the pectoral muscles may impede
the free action of the ribs prevent a copfous ex
panslon Of the air cells, and thus directly inter-
fere with the proper development of lung it's
sue which is Of much greater importance than
thick layers of muscles the external walls
Of the chest
An, athlete may have heavily muscled. well
rounded chest, and yet have inferior chest ex
pansion and lung development. After all.
breathing exercises should form the basis of all
the work in chest gymnastics.
THE DELTOID is a large thick triangular
muscle, which gives the rounded outline to tba
shoulder, and has received its name from its
resemblance to the inverted Greek letter delta
It surrounds the shoulder joint covering If com
pletey on its outer surface in front and be-
hind This muscle is remarkable coarse in tex
ture. which fact can be seen through the skin
OF a well developed athlete.
THE LATISSINIUS DORSAI is one of the
largest muscles of the body 1t covers the mid
die and lower half of the back IF ;s attached
to the upper part of the ilium or hin bone IF
is also attached in the middle of the bacI, 10
the lower half of the spinal column From This
extensive origin the fibers pass in different di
rectons, the ones coming from the upper part
OF the spine going horizontally, those from the
lower part of the spine passing oblioueIv m
ward, while those attached to the hip pass YER
tlcalIy, all converging to a thick ligament about
three inches in length, which is attached to the
humerus under the biceps muscle
Inns muscle is used in fencing. 1t may assist
in raising the ribs. In hanging from the rinos
and most work on the horizontal bar this rors
Gle is chiefly concerned. The pugiIist also uses
this muscle in giving a downward blow The
Importance of this muscle in gymnastics is in
dioated by the great complexity of it's func
tions.
. %
THE SENATUS AfAGNUS is a broad +b,n
muscle situated at the upper part and side Of
the chest under the arm. It's anatomy is too
complex for popular study 1t is not the i'm
portant respiratory muscle which 1t was for