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33 Cards in this Set
- Front
- Back
Pharyngeal Arch 1
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Aortic Arch 1
CN V2 (sensory only), V3 Meckel's cartilage: Mandible, Mallleus, Sphenomandibular ligament, incus Muscles: Muscles of mastication, Mylohyoid, Anterior belly digastric, Tensor tympani, Tensor veli palatini, ant 2/3 tongue Maxillary Artery Treacher Collins syndrome - 1st arch neural crest failure to migrate; mandibular hypoplasia, facial abnorm's |
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Pharyngeal Arch 2
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Aortic Arch 2
CN VII Reicher's cartilage: Stapes, Styloid process, Stylohyoid ligament, lesser horn styloid Muscles: muscles of facial expression, Stapedius, Stylohyoid, post belly digastric Stapedial Artery |
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Pharyngeal Arch 3
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Aortic Arch 3
CN IX Cartilage: greater horn of hyoid Muscle: stylopharyngeus Post 1/3 tongue Common carotid artery Prox. internal carotid artery Congenital Pharyngocutaneous fistula - persistence of cleft & pouch --> fistula between tonsillar area, cleft in lateral neck. |
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Pharyngeal Arch 4
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Aortic Arch 4
CN X (superior laryngeal) Muscles: most pharyngeal constrictors, cricothyroid, levator levi palatini Post 1/3 tongue True aortic arch Subclavian arteries |
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Pharyngeal Arch 5
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Aortic Arch 5
Obliterated CN True aortic arch Subclavian arteries |
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Pharyngeal Arch 6
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Aortic Arch 6
CN X (recurrent laryngeal) All intrinsic muscles of larynx except cricothyroid. Pulmonary arteries Ductus arteriosus |
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Pharyngeal Pouch 1
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Epithelium of middle ear and auditory tube
Pharyngeal membrane: Tympanic membrane Pharyngeal Groove: Epithelium of external ear canal |
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Pharyngeal Pouch 2
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Epithelium of palatine tonsil crypts
Obliterated pharyngeal membrane |
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Pharyngeal Pouch 3
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Thymus, inferior parathyroid glands
3rd pouch structures end up BELOW 4th pouch Aberrant 3rd/4th development: DiGeorge syndrome (T-cell deficiency and hypocalcemia) |
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Pharyngeal Pouch 4
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Superior parathyroid glands
Ultimobranchial body |
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Fetal circulation
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Umbilical vein = 80% O2 sat
Umbilical arteries = low O2 sat Ductus venosus = conducts blood from umb. v into IVC (bypass hepatic circ) Foramen ovale = IVC to heart; pumped out aorta to head + body Ductus arteriosus = deox blood from SVC expelled into pulm artery and D. art to lower body To close: Inc O2 --> dec PG's; indomethacin To keep open: PG's |
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Telencephalon
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Cerebral hemispheres
Lateral ventricles |
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Diencephalon
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Thalami
3rd ventricle |
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Mesencephalon
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Midbrain
Aqueduct |
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Metencephalon
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Pons
Cerebellum 4th ventricle |
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Myelencephalon
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Medulla
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Syringomyelia
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Enlarged central canal of spinal cord
Crossing fibers of spinothalamic tract damaged BL loss of pain + sensation in UE's w/ preservation of touch sensation Often in pts w/ Chiari II malformations C8-T1 common |
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Ear: 1st arch
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Bones: Malleus, incus
Muscle: tensor tympani (V3) |
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Ear: 2nd arch
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Bones: Stapes
Muscles: Stapedius (VII) |
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Ear: 1st cleft
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External auditory meatus
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Ear: 1st branchial membrane
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Tympanic membrane
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Ear: 1st pouch
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Eustachian tube
Middle ear cavity Mastoid air cells |
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Tongue
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1st pharyngeal arch:
ant 2/3 CN V3 = sensation CN VII = taste 3rd/4th arches: post 1/3 CN IX = sensation/taste CN X = posterior taste Motor innervation = CN XII |
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Cleft lip
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Failure of fusion of maxillary and medial nasal processes = 1* palate
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Cleft palate
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Failure of fusion of lateral palatine processes, nasal septum, and/or median palatine process = 2* palate
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Kidney: Pronephros
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Week 4
degenerates |
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Kidney: Mesonephros
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Interim kidney
1st trimester Male genital system contributor ** must be INDUCED to remain**: Seminal vesicle, epididymis, Ejac duct, ductus deferens (SEED) No in-utero fusion |
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Kidney: Metanephros
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Permanent
Glomerulus --> DCT |
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Kidney: Urogenital sinus
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Bladder
Urethra Allantois |
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Kidney: Ureteric bud
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Derived from mesophros
CD, Calyces, Pelvis, Ureter |
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Potter's syndrome
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BL renal agenesis --> oligohydramnios
Limb deformities Facial deform's Pulm hypoplasia Cause: malformation of ureteric bud |
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Paramesonephric = Mullerian Duct
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Fallopian tube
Uterus Upper 1/3 vag (lower 2/3 from urogenital sinus) Failure to fuse: Bicornuate uterus (urinary tract abnorm's and infertility) |
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Male/Female homologues
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Genital tubercle:
Estrogen --> Glans clitoris, vestibular bulbs DHT --> Glans penis, Corpus spongiosum Urogenital Sinus: Estrogen --> Bartholin glands, Skene glands DHT --> Cowper glands, Prostate Urogenital folds: Estrogen ---> Labia minora DHT --> Penile urethra Labioscrotal swelling Estrogen --> Labia majora DHT --> Scrotum |