Embryology Flashcards
_________ is responsible for excretion in fetal life
Placenta
During the 5 wk the brain divide into _____&_______
Telencephalon and diencephalon
The frontonasal process arise from the _____ crest
Neural
______is a rudimentary & non functional part of a developing kidney
Pronephrons
The collecting duct of permanent kidney form from the
Ureteric buds
What is the derivatives of the 2nd cartilage
Stapes
—–_——is the artery of the first arch
Maxillary artery
What is the nerve of the 6th arch
Recurrent laryngeal nerve
The development of the tounge begins with the growth of a medial swelling from the first pharngeal arch know as
Tuberculum impar
The mesoderm of the second third and fourth phrangeal arch form a medial swelling known as
Hypobrancial emminence
The extrinsic muscle of the tounge are responsible for
Movement in all directions
By the tenth week of development of the face the intermaxillary process will form the ______
Nasal bridge and the philtrum of the upper lip
The oropharengeal membrane can already be seen on the embryo as early as week 3’between the enlarging areas of the
Heart and brain
__________is the two endodermal thickening that appear at the end of the fourth week of facial development on the frontonasal process
Nasal placode
The excretory unit originate from the
Metanephric mesoderm
At birth the are approxim ______nephron
1 million
Urin production begins at what week of intrauterine life
10th week
__________is a clinical condition where kidney fuse together and refus to ascend
Horseshoe kidney
The proximal end of the nephron forms the
Bowman capsule
Extrinsic muscle of the tounge are
Genioglossus
Platoglossus
Styloglossus
Hyoglossus
Cranial neuropore closes by day
25thday
Condensation of the neural plate leads to
Neural tube
Neuroectodermal induction activities is caused by
Notochord
Nervous system is developed from the
Embryonic period
Neural tube forms
Caudal and crainal part
The autonomic nervous system is formed by
Brainstem and spinal cord
________cells secrete surfactant
Type II alveolar cells or pneumocyte
The body center that command control movement and thought
Brain
Respiratory element such as alveoli begin forming at what stage
Canalicular stage
The space between the dura matter an arachnoid matter is called
Subdura space
Respiratory distress syndrome is caused by
Surfactant deficiency
______give rise to small s shaped vesicles
Renal vesicles
The Meta nephrons recieve arterial supply from where
Pelvic branch of aorta
In female the cranial part of the urethra give rise to the ______
Urethral and para urethral gland
Definitive urogenital bsinus develop into ________
Penile urethra
Buds of the urethra forms ———-
Prostate gland
Seminal vesicles are formed by
Budding from the ductus deferens
Muscle of the tounge originate from ———
Occipital somites
Respiratory system originate from
Endodermal layer
What is respiratory diverticulum and where does it develop from
Develop from a central outgrowth of the cranial part of the foregut
Trachea develop from where?
The laryngotracheal diverticulum
Which cells produce cerebrospinal fluid
Ependymal cells of the choroid process
Procephalon give rise to
Forebrain
Mesencephalon give rise to
Mid brain
Rhombocephalon give rise to
Hind brain
Rhombocephalon is divided into
Myelencephalon and metacephalon
Hind brain consist of
Pons
Medulla
Cerebelum
———–is a condition in which the caudal neuropore does not close between the 27–28 day
Spina bifida
________is a condition in which the cranial neuropore does not close after 25_28 days
Anecephaly
The space between the arachnoid matter and the pia matter is called
Sub arachnoid space
The 3 layers that cover the brain or spinal cord are called
Meninges
3 layers of the meninges are
Pia matter
Arachnoid matter
Dura matter
___________is a condition involving tracheal narrowing caused by anterior deviation of tracheosophageal septum
Tracheal stenosis
__________is an abnormal connection between trachea and oesophagus or result of incomplete fusion of tracheosophageal septum
Tracheosophageal fistula
