EMBRYOLOGY mci screening test and indian medical pg examz high yield important topics study tips
By Live Dr - Wed Feb 11, 3:46 am
|Urethra and paraurethral glands
Vagina, Bartholin’s glands
|Parmesonephric duct||Appendix testis||Uterus, fallopian tubes, Hydatid of Morgagni,|
|Mesonephric duct||Trigone of bladder,
Epididymis, appendix of epididymis. Seminal vesicles, ductus deference
|Trigone of bladder,
|Gubernaculums||Gubernaculums||Round and ovarian ligaments.|
ANALOGOUS STRUCTURES IN MALE AND FEMALE GENITALIAE
|Labia minora||Ventral aspect of penis|
|Vestibular bulb||Corpus spongiosum|
|The extra hepatic portion of umbilical vein||The round ligament of the liver (ligamentum teres hepatic), which lies in the free edge of the falciform ligament|
|The intrahepatic portion (ductus venosus)||Ligamentum venosus|
|Closure of ductus arteriosus||Ligamentum arteriosum|
|Closure of distal part of umbilical arteries||Medial umbilical ligament|
|Proximal part of umbilical artery||Superior vesical artery|
|Within 72 hrs||Diamniotic dichorionic|
|4-8 days||Diamniotic monochorionic|
|> 8 days||Monoamniotic monochorionic|
|> development of embryonic disc||Conjoined twins|
Education is what remains after one has forgotten what one has learned in school. -Albert Einstein
ELEVENTH HOUR EMBRYOLOGY 14
|ARCH||NERVE AND ATERRIES||MUSCLES||BONES/ CARTILAGE.|
|Mandibular division of trigeminal nerve
maxillary remnant of 1st arch of aorta
|Muscles of mastication, anterior digastric, tensor tympani, tensor palatii||Quadrate cartilage, Malleus, Incus, Meckel’s cartilage, sphenomandibular ligament, mandible.|
stapedial remnant of dorsal part of 2nd arch of aorta
|Facial muscles, posterior digastric,||Stapes superstructure, styloid process, stylohyoid ligament, lesser horn and upper body of hyoid.|
internal carotid remnant of dorsal 3rd aortic arch and common carotid remnant of ventral 3rd aortic arch
|Stylopharyngeus||Greater horn and lower body of hyoid|
|Fourth||Superior laryngeal nerve
1st part of Subclavian artery on right side
main part of aortic arch on left side
|Cricothyroid, levator palatine, constrictor of pharynx,||Laryngeal cartilages|
main part of pulmonary artery on ventral side
|muscles of larynx||Laryngeal cartilages|
1- Middle ear, Eustachian tube.
3- Upper- inferior parathyroid
4- upper- superior parathyroid
Lower- ultimobranchial body
In Persian mythology, Rudaba’s labour of Rostam was prolonged due to the extraordinary size of her baby. Zal, her husband, summoned the Simurgh, who instructed him upon how to perform a caesarean section, thus saving Rudaba and the child, who later on became one of the greatest Persian heroes.
ELEVENTH HOUR EMBRYOLOGY 15
1- external auditory canal
2, 3, 4- cervical sinus
|STRUCTURES DERIVED FROM NEURAL CREST|
Dorsal root ganglia
Cells belonging to APUD series
Bones and connective tissues of craniofacial structures
Cells of truncoconal; cushions of heart
*At birth there are 2 million primary oocytes in the dictyotene (resting phase), arrested in the first meiotic division.
By puberty, 4 lac remain.
400 ovulate during reproductive period.
Just prior to ovulation, the primary oocyte enters and completes 1st meiotic division.
The 2nd meiotic division is completed after fertilization.
*During first 24 weeks, there is only fetal hemoglobin; after which adult type Hb appears,
At term, 75-80% Hb is of fetal type.
It is completely replaced by 4 months of age.
*Earlier weeks of gestation, primitive nucleated RBC s are produced in yolk sac.
In middle trimester, liver is the main organ along with spleen and lymph nodes.
*Order of development of paranasal sinuses.
Occurrence of acute sinusitis and carcinoma-maxillary-ethmoid -frontal-sphenoid.
*Accutane embryopathy- isotretinoin teratogenicity.
*The anti epileptic least like to cause malformation is Phenobarbitone.
*HCG is produced from syncytiotrophoblast.
The greatest barrier to success is the fear of failure.- Sven Goran Eriksson
ELEVENTH HOUR EMBRYOLOGY 16