One of my friends sent me this. Scary eh?
------- Forwarded message follows -------
Be very frightened ...
quoted 52 lines List of Three's
>
> List of Three's
>
> The structure of the human body is organized into groups of three with
> remarkable frequency. I have listed several examples of this tendency
> by region. This list does not include structures contributing to form
> the many "triangles" in the body. If you know of any more, please let
> me know (jmcnulty@bsd.meddean.luc.edu)
> ______________________________________________________________________
>
> Loyola University Medical Education Network
> ______________________________________________________________________
>
> Embryology
>
>
> 3 germ layers- endoderm
> mesoderm
> ectoderm
>
> 3 divisions of somites- sclerotome
> dermatome
> myotome
>
> 3 definitive kidneys- pronephros
> mesonephros
> metanephros
>
> Back
>
>
> 3 parts of the erector spinae m.- iliocostalis
> longissimus
> spinalis
> each are divided again into 3 parts
>
> 3 parts of the transversospinalis m. - semispinalis m.
> multifidus m.
> rotator m.
>
> 3 coverings of the spinal cord- dura mater
> arachnoid
> pia
>
>
> Neck
>
>
> 3 parts of the axillary artery
> 3rd part has 3 branches- subscapular
> anterior humeral circumflex
> posterior humeral
circumflex
quoted 10 lines Brachial plexus
>
> Brachial plexus
> 3 trunks- upper
> middle
> lower
> 3 posterior divisions
> 3 anterior divisions
> 3 cords- lateral
> medial
> 3 branches off medial cord-
medial
quoted 2 lines brachial
>brachial
>
medial
quoted 2 lines antebrachial
>antebrachial
>
medial
quoted 3 lines pectoral
>pectoral
> posterior
> 3 branches off posterior cord-
upper su
quoted 2 lines bscapular
>bscapular
>
lower s
quoted 2 lines ubscapular
>ubscapular
>
thoraco
quoted 6 lines dorsal
>dorsal
>
> 3 branches off the thyrocervical trunk- transverse cervical
> suprascapular
> inferior thyroid
> 3 veins drain the thyroid gland - superior (into internal
jugular
quoted 2 lines )
>)
> middle (into internal
jugular)
quoted 1 line inferior (into left
> inferior (into left
brachioceph
quoted 23 lines alic)
>alic)
> 3 scalene muscles- anterior
> middle
> posterior
> 3 constrictor muscles- superior
> middle
> inferior
> 3 parts of the pharynx- nasopharynx
> oropharynx
> laryngeopharynx
> 3 parts to the hyoid bone- body
> greater horn
> lesser horn
>
> Head
>
>
> 3 parts of the maxillary artery- mandibular
> pterygoid
> pterygopalatine
> 3 divisions of the trigeminal n.- V1 - ophthalmic
> V2 - maxillary
> V3 - mandibular- has 3
parts
quoted 3 lines undivided trunk
> undivided trunk
> anterior division
> posterior division-
ha
quoted 2 lines s 3 branches
>s 3 branches
>
auriculotempora
quoted 3 lines l
>l
> lingual
> inferior
alveol
quoted 9 lines ar
>ar
> 3 cranial fossae- anterior
> middle
> posterior
>
> 3 cranial nerves pass through jugular foramen- C.N. IX
> C.N. X
> C.N. XI
> 3 cranial nerves travel in the wall of the cavernous sinus-
C.N. II
quoted 2 lines I
>I
>
C.N. IV
quoted 1 line
>
C.N. V
quoted 7 lines 3 cranial nerves carry parasympathetics to the head- C.N. III
> 3 cranial nerves carry parasympathetics to the head- C.N. III
> C.N. VII
> C.N. IX
> 3 paired paranasal sinuses- maxillary
> frontal
> ethmoidal
> (sphenoid sinus is not
paired)
quoted 1 line 3 muscles innervated by 3 cranial nerves attach to the styloid
> 3 muscles innervated by 3 cranial nerves attach to the styloid
process-
quoted 19 lines stylohyoid - C.N. VII
> stylohyoid - C.N. VII
> stylopharyngeus - C.N. IX
> styloglossus - C.N. XII
> 3 layers in tympanic membrane (derived from 3 germ layers)
> 3 middle ear bones- incus
> malleus
> stapes
> 3 semicircular canals
> 3 intrinsic muscles of the tongue- longitudinal
> vertical
> transverse
>
>
> Shoulder
>
>
> 3 muscles attach to coracoid process - coracobrachialis
> pectoralis minor
> short head of
biceps
quoted 1 line 3 parts of the axillary a.; 3rd part has 3 branches- subscapular
> 3 parts of the axillary a.; 3rd part has 3 branches- subscapular
a.
quoted 1 line anterior
> anterior
circum
quoted 2 lines flex humeral a.
>flex humeral a.
> posterior
circu
quoted 19 lines mflex humeral a
>mflex humeral a
>
>
> Arm
>
>
> 3 muscles in anterior comparment- biceps brachii
> coracobrachialis
> brachialis
> 3 heads of triceps brachii m.- long
> lateral
> medial
>
>
>
> Forearm
>
>
> 3 muscles in deep anterior compartment - flexor digitorum
profun
quoted 2 lines dus
>dus
> flexor pollicis
longs
quoted 11 lines pronator quadratus
> pronator quadratus
>
>
> Hand
>
>
> 3 muscles in thenar eminence- opponens pollicis
> flexor pollicis brevis
> abductor pollicis brevis
> 3 muscles in hypothenar compartment- flexor digiti minimi
> abductor digiti
minimi
quoted 1 line opponens digiti
> opponens digiti
minimi
quoted 19 lines 3 phalanges in fingers- proximal
> 3 phalanges in fingers- proximal
> middle
> distal
> 3 palmer interossei
>
>
> Thorax
>
>
> 3 compartments- mediastinum
> left pleural cavity
> right pleural cavity
> 3 branches off the aortic arch- brachiocephalic a.
> left common carotid a.
> left subclavian a.
> 3 principal surfaces of the pleura- costal
> diaphragmatic
> mediastinal
> *the cupola is the
supe
quoted 6 lines rior extension
>rior extension
> 3 lobes of the right lung- superior
> middle
> inferior
> 3 bronchopulmonary segments of the upper right lobe- apical
>
posteri
quoted 2 lines or
>or
>
anterio
quoted 17 lines r
>r
> 3 false ribs on each side
> 3 cusps of the semilunar aortic and pulmonary valves of the heart
> 3 cusps of the tricuspid valve
> 3 main arteries of the heart- circumflex
> anterior interventricular
> right coronary
> 3 splanchnic nerves- greater
> lesser
> least
>
>
>
> Abdomen
>
>
> 3 folds in anterior abdominal wall- median (obliterated
urachus)
quoted 1 line medial (obliterated
> medial (obliterated
umbilical a
quoted 2 lines .)
>.)
> lateral (inferior
epigastric a.
quoted 7 lines )
>)
> 3 openings in diaphragm- aortic
> esophageal
> inferior vena cava
> 3 arcuate ligaments of diaphragm- median over aorta
> medial over psoas major m.
> lateral over quadratus
lumborum
quoted 6 lines m.
> m.
> 3 parts of the stomach- fundus
> body
> pylorus
> 3 unpaired branches of the abdominal aorta- celiac a.
> superior mesenteric
a.
quoted 1 line inferior mesenteric
> inferior mesenteric
a.
quoted 4 lines 3 brances of celiac a.- left gastric a.
> 3 brances of celiac a.- left gastric a.
> splenic a.
> common hepatic a.
> 3 brancheds of common hepatic a.- right
gastric a
quoted 2 lines .
>.
> proper
hepatic
quoted 2 lines a.
>a.
>
gastroduodenal
quoted 10 lines a.
>a.
>
> 3 arterial branches supply adrenal glands- inferior phrenic
> aorta
> renal
> 3 structures lie within porta hepatis- proper hepatic a.
> portal vein
> common bile duct
> 3 principal veins contribute to the portal vein- splenic v.
> superior
mesent
quoted 2 lines eric v.
>eric v.
> inferior
mesent
quoted 33 lines eric v.
>eric v.
> 3 parts of the small intestine- duodenum
> jejunum
> ileum
> 3 parts of large intestine- ascending
> transverse
> descending
> 3 coverings of the spermatic cord- external spermatic fascia
> cremasteric fascia
> internal spermatic fascia
>
>
>
>
> Pelvis and Perineum
>
>
> 3 bones in os coxae- pubis
> ilium
> ischium
> 3 parts of the pubis- body
> superior ramus
> inferior ramus
> 3 foramina in the pelvis- obturator foramen
> greater ischiadic foramen
> lesser ischiadic foramen
> 3 gluteus muscles- gluteus maximus
> gluteus medius
> gluteus minimus
> 3 rectal arteries- superior rectal from inferior mesenteric a.
> middle rectal from internal iliac a.
> inferior rectal from internal pudendal a.
> 3 branches of the posterior division of internal iliac a.-
iliolum
quoted 2 lines bar
>bar
>
lateral
quoted 2 lines sacral
> sacral
>
superio
quoted 13 lines r gluteal
>r gluteal
> 3 parts of the urethra- prostatic
> membranous
> spongy
> 3 parts of the uterus- fundus
> body
> cervix
> 3 erectile compartments of the penis- corpus spongiosum
> left corpus cavernosum
> right corpus cavernosum
> 3 muscles in superficial perineal pouch- bulbospongiosus
> ischiocavernosus
> superficial
transverse
quoted 2 lines perineus
>perineus
> 3 arteries supply the rectum- superior rectal (from inferior
mesenter
quoted 3 lines ic)
>ic)
> middle rectal (from internal iliac)
> inferior rectal (from internal
pudendal
quoted 26 lines )
>)
>
>
> Gluteus
>
>
> 3 gluteal muscles- gluteus maximus
> gluteus medius
> gluteus minimus
> 3 muscles innervated by superior gluteal n.- gluteus medius
> gluteus minimus
> tensor fascia lata
>
>
>
> Thigh
>
>
> 3 hamstring muscles- biceps femoris
> semitendinosus
> semimembranosus
> 3 compartments in the femoral sheath
> 3 muscular compartments of the thigh- anterior
> medial
> posterior
> 3 branches of the lateral femoral circumflex a.- descending
bran
quoted 2 lines ch
>ch
> transverse
bran
quoted 2 lines ch
>ch
> ascending
branc
quoted 27 lines h
>h
>
>
> Leg
>
>
> 3 muscles in anterior compartment - tibialis anterior
> extensor digitorum
> extensor hallucis
>
> Foot
>
>
> 3 cuneiform bones- medial
> intermediate
> lateral
> 3 phalanges in toes- proximal
> middle
> distal
> 3 plantar interossei
>
>
> Miscellaneous
>
>
> 3 exams in the course
> ______________________________________________________________________
--
Ben Coffer
http://www.hybridgame.demon.co.uk/