. - The following
brief summary of the physiology of the muscles, while, incomplete, will
assist somewhat in understanding the relation of these structures, with
which massage deals so directly, to other bodily organs:
1. Muscular action is allied to ciliary and amoeboid
movements.
2. The source of muscular energy is the oxidation
of glycogen stored in the muscles.
3. During work, the amount of oxygen absorbed and
the amount of C02 given off by the muscles, is very greatly increased;
hence respiratory activity is increased.
4. Muscular activity is accompanied by the production
of heat; the muscles are the principal seat of heat production in the body.
The thermic activities of the muscles are dependent, not only upon muscular
activity, but also upon nerve control, through the heat-centers of the
central nervous system.
5. Muscular activity is usually excited by nervous
impulses received by the muscle at the rate of about ten per second.
6. The muscle has an independent excitability which
induces contraction, as the result, of 'the application of chemical substances,
cold, electricity, and mechanical stimulus.
7. Acids and excessive heat produce stiffening of
the muscles.
8. A single voluntary muscular movement may be made
in one sixteenth of a second.
9. Contraction from electrical stimulation occurs
more quickly than from voluntary effort.
10. With contraction of a muscle, contraction of
the opposing muscle occurs simultaneously,
beginning slightly later.
11. Voluntary contraction is allied to tetanus.
12. Tetanus is produced by electrical applications
in which the current is interrupted at the rate of twenty or more per second.
13. Muscular contraction is propagated along the
muscle at the rate of forty feet per second.
14. Muscles are most perfect machines. The best
steam engine utilizes only one eighth of the force contained in the fuel
as work, seven eighths appearing as heat. A muscle produces one fifth work
and four fifths heat.
15. The amount of work a muscle can do is proportioned
to its transverse section.
16. A human muscle is able to lift .125 pounds for
each square inch in area of its transverse section.
17. Muscular strength varies at different periods
of life. A new-born infant is able to sustain its own weight for 24 seconds
by grasping a stick with its hands. The strength of adult men and
women, in relation to the body weight, is shown in Table I.
18. The weight of the muscles in proportion to the
body weight varies at different ages, being 23.40 per cent of the body
weight of a new-born babe, and 43.10 per cent of the body weight in adults.
19. The amount of work done by a laboring man in
eight hours is about two million foot-pounds.
20. Fatigue is the result of the accumulation, within
the muscle, of the poisonous products of work; the muscle is rested when
these products are removed.
NAME
|
NERVE
|
ACTION
|
Head and Face
|
|
|
Occipito-frontalis |
Posterior auricular,
small occipital, facial |
Moves scalp and
wrinkles forehead |
Attollens aurem |
Occipitalis minor |
Raises ear |
Attrahens aurem |
Facial |
Advances ear |
Retrahens aurem |
Posterior auricular |
Retracts ear |
Orbicularis palpebrarum |
Facial |
Closes eyelids |
Corrugator supercilii |
Facial |
Draws eyebrows
down and in |
Tensor tarsi |
Facial |
Compresses puncta
and lachrymal sac |
Levator palpebrs
superior |
Third |
Raises upper
lid |
Rectus superior
(eye) |
Third |
Rotates eyeball
upward |
Rectus inferior
(eye) |
Third |
Rotates eyeball
downward |
Rectus internus
(eye) |
Third |
Rotates eyeball
inward |
Rectus externus
(eye) |
Sixth |
Rotates eyeball
outward |
Obliquus superior
(eye) |
Fourth |
Rotates eyeball
down and out |
Obliquus inferior
(eye) |
Third |
Rotates eyeball
up and out |
Pyramidalis nasi |
Facial |
Depresses eyebrow |
Levavator labii
superioris alseque nasi |
Facial |
Elevates upper
lip, dilates nostril. |
Dilator naris
posterior |
Facial |
Dilates nostril |
Dilator naris
anterior |
Facial |
Dilates nostril |
Compressor nasi |
Facial |
Contracts nostril |
Compressor narium
minor |
Facial |
Contracts nostril |
Depressor alae
nast |
Facial |
Contracts nostril |
Levator labii
superioris |
Facial |
Elevates upper
lip |
Levator anguli
oris |
Facial |
Elevates angle
of mouth |
Zygomaticus major |
Facial |
Draws upper lip
backward and upward |
Zygomaticus minor |
Facial |
Draws upper lip
backward and up-ward |
Levator labii
inferioris |
Facial |
Elevates lower
lip |
Depressor labii
inferioris |
Facial |
Depresses lower
lip |
Depressor anguli
oris |
Facial |
Depresses angle
of mouth |
Buccinator |
Inferior maxillary |
Compresses cheeks |
Risorius |
Facial |
Draws angle of
mouth outward |
Orbicularis oris |
Facial |
Closes mouth |
Masseter |
Inferior maxillary |
Mastication,
molars |
Temporal |
Inferior maxillary |
Mastication,
incisors |
Pterygoedus externus |
Inferior maxillary |
Moves lower jaw
forward |
Pterygoidus internus |
Inferior maxillary |
Raises and advances
inferior maxillary |
Neck
|
|
|
Platysma myoides |
Facial and superficial
cervical |
Wrinkles skin
and depresses mouth |
Sterno-cleido-mastoid |
Spinal accessory
and cervical plexus |
Depresses and
rotates head |
Sterno-hyoid |
Descendens and
communicans noni |
Depresses hyoid |
Sterno-thyroid |
Descendens and
communicaus noni |
Depresses larynx |
Thyro-hyoid |
Hypoglossal |
Elevates larynx |
Omo-hyoid |
Descendens and
communicans noni |
Depresses and
retracts hyoid |
Digastric |
Inferior dental
(facial) |
Elevates hyoid
and tongue |
Stylo-hyoid |
Facial |
Elevates and
retracts hyoid |
Mylo-hyiod |
Inferior dental |
Elevates and
advances hyoid, forms floor of mouth |
Genio-hyoid |
Hypoglossal |
Elevates and
advances hyoid |
Genio-hyo-glossus |
Hypoglossal |
Retracts and
protrudes tongue |
Hyo-glossus |
Hypoglossal |
Depresses side
of tongue |
Lingualis |
Chorda tympani |
Elevates center
of tongue |
Stylo-glossus |
Hypoglossal |
Elevates and
retracts tongue |
Palato-glossus |
Meckel's ganglion |
Draws base of
tongue upward |
Constrictor inferior |
Glosso-pharyngeal,
pharyngeal plexus, and external and recurrent laryng'l. |
Contracts fauces |
Constrictor medius |
Glosso-pharyngeal
and glosso-pharyngeal plexus |
Contracts fauces |
Constrictor superior |
Glosso-pharyngeal
and pharyngeal plexus |
Contracts pharynx |
Stylo-pharyngeus |
Glosso-pharyngeal
and pharyngeal plexus |
Elevates pharynx |
Palato-pharyngeus |
Heckel's ganglion |
Closes posterior
nares |
Levator palati |
Reckel's ganglion
(facial) |
Elevates soft
palate |
Tensor palati |
Otic ganglion |
Renders palate
tense |
Azygos uvulae |
Heckel's ganglion
(facial) |
Raises uvula |
Rectus capitus
anticus major |
Cervical plexus |
Flexes neck backward |
Rectus capitus
anticus minor |
Cervical plexus |
Flexes neck backward |
Rectus lateralis |
Cervical plexus |
Moves head laterally |
Longus colli |
Lower cervical |
Flexes cervical
spine |
Scalenus anticus |
Lower cervical |
Flexes neck laterally |
Scalenus medius |
Lower cervical |
Flexes neck laterally |
Scalenus posticus |
Lower cervical. |
Flexes neck laterally |
Back
|
|
|
Trapezius |
Spinal accessory
and cervical plexus |
Draws head backward
and elevates shoulders |
Latissimus dorsi |
Subscapular |
Draws arm backward
and downward |
Levator anguli
scapulae |
Third and fourth
cervical |
Elevates upper
angle of scapula |
Rhomboideus minor |
Fifth cervical |
Retracts and
elevates scapula |
Rhomboideus major |
Fifth cervical |
Elevates and
retracts scapula |
Serratus posticus
superior |
Posterior branches
of cervical |
Raises ribs in
inspiration |
Serratus posticus
inferior |
Posterior branches
of dorsal |
Depresses ribs
in expiration |
Splenius capitus
et colli |
Posterior branches
of cervical |
Rotates head
and holds it erect |
Splenius colli |
Posterior branches
of cervical |
Rotates head
and holds it erect |
Erector spinae |
Lumbar and dorsal |
Holds spine erect |
Sacro-lumbalis |
Branches of dorsal |
Erects trunk
and flexes it backward |
Musculus accessorius
ad sacro-lumbalem |
Branches of dorsal |
Erects trunk
and flexes it backward |
Longissimus dorsi |
Branches of lumbar
and dorsal |
Erects trunk
and flexes it backward |
Spinalis dorsi |
Dorsal branches |
Erects spinal
column |
Cervicalis ascendens |
Branches of cervical |
Holds head erect
and raises upper ribs |
Tranaversalis
colli |
Branches of cervical |
Holds head erect |
Trachelo-mastoid |
Branches of cervical |
Steadies head |
Complexus |
Sub-occipital,
great occipital, and branches of cervical |
Retracts and
rotates head |
Biventer cervicis |
(The same as
for complexus) |
Retracts and
rotates head |
Semispinalis
dorsi |
Branches of dorsal |
Erects spinal
column |
Semispinalis
colli |
Cervical branches |
Erects spinal
column |
Multifidus spinae |
Posterior spinal
branches |
Erects and rotates
spinal column |
Rotatores spinae |
Dorsal branches
of spine |
Rotate spinal
column |
Supraspinales |
Posterior cervical |
Approximate spinous
processes |
Interspinales |
Posterior cervical |
Approximate spinous
processes |
Extensor coccygis |
Sacral branches |
Extends coccyx |
Intertransversales |
Posterior spinal
nerves |
Approximate transverse
processes |
Rectus capitis
posticus major |
Sub. occipital |
Rotates head |
Rectus capitis
posticus minor |
Sub. occipital |
Draws head backward |
Obliquus capitis
superior |
Sub. occipital |
Draws head backward |
Obliquus capitis
inferior |
Sub. and great
occipital |
Rotates head |
Abdomen
|
|
|
Obliquus externus |
Intercostal,
ilio-hypogastric, ilio-in-guinal |
Compresses viscera
and flexes thorax |
Obliquus internus |
Intercostal,
ilio-hypogastric, ilio-in-guinal |
Compresses viscera
and flexes thorax |
Transversalis |
Intercostal,
ilio-hypogastric, ilio-in-guinal |
Compresses viscera
and flexes thorax |
Rectus abdominis |
Intercostal,
ilio-hypogastric, ilio-in-guinal |
Compresses viscera
and flexes thorax |
Pyramidalis |
Ilio-hypogastric |
Renders linea
alba tense |
Quadratus lumborum |
Lumbar |
Flexes thorax
laterally |
Thorax
|
|
|
Intercostales
externi |
Intercostal |
Depress ribs
in expiration |
Intercostales
interni |
Intercostal |
Raise ribs in
inspiration |
Intracostales |
Intercostal |
Inspiration |
Triangularis
sterni |
Intercostal |
Expiration |
Levatores costarum |
Intercostal |
Raise ribs |
Diaphragm |
Phrenic |
Inspiration |
Shoulder
|
|
|
Pectoralls major |
Anterior thoracic |
Draws arm down
and forward |
Pectoralis minor |
Anterior thoracic |
Depresses point
of shoulder |
Subclavius |
Fifth and sixth
cervical |
Depresses shoulder |
Serratus magnus |
Posterior thoracic |
Raises shoulder
and elevates ribs in inspiration |
Deltoid |
Circumflex |
Raises arm |
Subscapularis |
Subscapular |
Rotates humerus
inward |
Supraspinatus |
Suprascapular |
Supports shoulder
joint, raises arm |
Infraspinatus |
Suprascapular |
Rotates humerus
outward |
Teres minor |
Circumflex |
Rotates humerus
outward |
Teres major |
Subscapular |
Draws arm down
and back |
Arm
|
|
|
Coraco-brachialis |
Musculo-cutaneous |
Draws arm forward
and inward |
Biceps |
Musculo-cutaneous |
Flexes and supinates
forearm |
Brachialis anticus |
Musculo-cutaneous,
musculo-spiral |
Flexes forearm |
Triceps |
Musculo-spiral |
Extends forearm |
Subaneoneus |
Musculo-spiral |
Tensor of posterior
ligament of elbow |
Forearm
|
|
|
Pronator radii
teres |
Median |
Pronates hand |
Flexor carpi
radialis |
Median |
Flexes wrist |
Palmaris longus |
Median |
Tenses palmar
fascia |
Flexor carpi
ulnaris |
Ulnar |
Flexes wrist |
Flexor sublimus
digitorum |
Median |
Flexes second
phalanges |
Flexor profundus
digitorum |
Ulnar and anterior
interosseus |
Flexes the phalanges |
Flexor longus
pollicis |
Anterior interosseus |
Flexes last phalanx
of thumb |
Pronator quadratus |
Anterior interosseus |
Pronates hand |
Supinator longus |
Musculo-spiral |
Supinates hand |
Extensor carpi
radialis longior |
Musoulo-spiral |
Extends wrist |
Extensor carpi
radialis brevior |
Posterior interosseus |
Extends wrist |
Extensor communis
digitorum |
Posterior Interosseus |
Extends fingers |
Extensor minimi
digiti |
Posterior interosseus |
Extensor of little
finger |
Extensor carpi
ulnaris |
Posterior interosseus |
Extends wrist |
Anconeus |
Musculo-spiral |
Extends forearm |
Supinator brevis |
Posterior interosseus |
Supinates hand |
Extensor ossis
metacarpi pollicis |
Posterior interosseus |
Extends thumb |
Extensor primi
internodii pollicis |
Posterior interosseus |
Extends thumb |
Extensor secundi
internodii pollicis |
Posterior interosseus |
Extends thumb |
Extensor indicis |
Posterior interosseus |
Extends index |
Abductor pollicis |
Median |
Draws thumb from
median line |
Flexor ossis
metacarpi pollicis (oppon). |
Median |
Flexes thumb |
Flexor brevis
pollicis |
Median and ulnar |
Flexes thumb |
Hand
|
|
|
Adductor pollicis |
Ulnar |
Draws thumb to
median line |
Palmaris brevis |
Ulnar |
Corrugates skin
of palm |
Abductor minimi
digiti |
Ulnar |
Abductor of little
finger |
Flexor brevis
minimi digiti |
Ulnar |
Flexes little
finger |
Flexor minimi
digiti (opponens) |
Ulnar |
Flexes little
finger |
Lumbricales |
Median and ulnar |
Flexes first
phalanges and extend second and third |
Interossel palmaris |
Ulnar |
Abduct fingers |
Interossei dorsales |
Ulnar |
Abduct fingers,
flex first phalanges, and extend second and third |
Lower Extremity
|
|
|
Psoas magnus |
Lumbar |
Flexes and rotates
thigh outward and flexes trunk on pelvis |
Psoas parvus |
Lumbar |
Tensor of iliac
fascia |
Iliacus |
Anterior crural |
Flexes femur
and rotates it outward |
Hip
|
|
|
Gluteus maximus |
Small sciatic
and sacral plexus |
Extends and abducts
thigh and rotates it outward |
Gluteus medius |
Superior gluteal |
Rotates outward
and inward, abducts, extends, and flexes thigh |
Gluteus minimus |
Superior gluteal |
Rotates outward
and inward, abducts, extends, and flexes thigh |
Pyriformis |
Sacral |
Rotates thigh
outward, abducts it, and tilts pelvis forward |
Gemellus superior |
Sacral |
Rotates thigh
outward and abducts it |
Obturator internus |
Sacral |
Rotates thigh
outward and tilts pelvis forward |
Gemellus inferior |
Sacral |
Rotates thigh
outward and abducts it |
Obturator externus |
Obturator |
Rotates thigh
outward and tilts pelvis forward |
Quadratus fernoris. |
Sacral |
Abducts thigh
and rotates it outward |
Biceps |
Great sciatic |
Flexes leg and
rotates it outward |
Semitendinosus |
Great sciatic |
Flexes leg on
thigh, and rotates it in-ward |
Semimembranosus |
Great sciatic |
Flexes leg and
rotates it inward |
Thigh
|
|
|
Tensor vaginae
femoris |
Superior gluteal |
Tensor of fascia
lata |
Sartorius |
Anterior crural |
Flexes thigh
and rotates it outward |
Rectus femoris |
Anterior crural |
Extends leg |
Vastus externus |
Anterior crural |
Extends leg |
Vastus internus |
Anterior crural |
Extends leg |
Crureus |
Anterior crural |
Extends leg |
Quadriceps
extensor (includes four preceding muscles) |
|
Subcrureus |
Anterior crural |
Acts with crureus |
Gracilis |
Obturator |
Flexes and adducts
thigh and rotates it outward |
Pectineus |
Anterior crural,
obturator |
Flexes and adducts
thigh and rotates it outward |
Adductor longus |
Obturator |
Adducts and flexes
thigh |
Adductor brevis |
Obturator |
Adducts and flexes
thigh |
Adductor magnus |
Obturator and
great sciatic |
Adducts thigh
and rotates it outward |
Leg
|
|
|
Tibialis anticus |
Anterior tibial |
Flexes ankle
aand elevates inner border of foot |
Extensor longus
digitorum |
Anterior tibial |
Extends toes
and flexes ankle |
Extensor proprius
pollicis |
Anterior tibial |
Extends toes
and flexes ankle |
Peroneus tertius |
Anterior tibial |
Flexes tarsus
and raises outer border of foot |
Gastrocnemius |
Internal popliteal |
Extends foot |
Plantaris |
Internal popliteal |
Tenses plantar
fascia |
Soleus |
Internal popliteal |
Extends foot |
Popliteus |
Internal popliteal |
Flexes leg and
rotates it inward |
Flexor longus
pollicis |
Posterior tibial |
Flexes great
toe |
Flexor longus
digitorum |
Posterior tibial |
Flexes phalanges
and extends foot |
Tibialis posticus |
Posterior tibial |
Extends ankle
and turns sole inward |
Peroneus longus |
Musculo-cutaneous |
Extends and everts
foot |
Peroneus brevis |
Musculo-cutaneous |
Extends foot |
Foot
|
|
|
Extensor brevis
digitorum |
Anterior tibial |
Extends toes |
Abductor pollicis |
Internal plantar |
Abducts great
toe, flexes first phalanx, and extends second |
Flexor brevis
digitorum |
Internal plantar |
Flexes lesser
toes |
Abductor minimi
digiti |
External plantar |
Abducts little
toe |
Flexor accessorius |
External plantar |
Accessory flexor
of toes |
Lumbricales |
Internal and
external plantar |
Flex first phalanges
and extend last two |
Flexor brevis
pollicis |
Internal plantar |
Flexes first
phalanx of great toe and extends second |
Adductor pollicis |
External plantar |
Adducts great
toe and extends first and second phalanx |
Flexor brevis
minimi digiti |
External plantar |
Flexes first
phalanx of little toe and extends second |
Transversus pedis |
External plantar |
Adducts great
toe |
Interossei dorsal |
External plantar |
Abduct toes |
Interossei |
External plantar |
Adduct toes |
The foregoing table has been arranged with much care and with
special reference to the needs of thestudentof massage. It is believed to be the
most complete and correct resume of the sort which has ever been published embodying,
as it does, the results of the very latest studies and authoritative statements
relating to the nerve supply and actions of the various muscles of the body. The
student of massage who desires to place himself in the front rank of his profession
as a masseur, will find it not only profitable, but essential, to make a careful
study of this table, and to become familiar with the facts which it very succinctly
presents. The grouping of the muscles of the several regions of the body
renders it convenient to study each section by itself, and by the aid of Plates
V to X and XIII, it will not be found difficult to form a very correct idea of
the precise location and outline of each particular muscle in the body, and of
the origin and distribution of the nerve supply. Two hundred and seven different
muscles or muscular groups are named in the table, by means of which one hundred
and sixty-three different motor acts are performed. It may not be absolutely
essential that every one of these should be held constantly in the memory, but
those muscles, at least, which constitute the largest fleshy masses of the body,
should be thoroughly studied and familiarized.