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T2 ex1 mash
antomy mash exam 1 T2
| Question | Answer |
|---|---|
| give the 3 derivatives from the cartilage of the 2nd brachial arch | stapes, styloid process, stylohyoid ligament |
| give hypomere derivatives of the sacrococcygeal myotomes | skeletal mm. of anus and sex organs, pelvic diaphragm |
| what is the fate of the preotic myotomes? | extrinsic eye muscles |
| nerve of the 3rd pharyngeal arch | CN 9 glossopharyngeal |
| as the eye develops, the short posterior ciliary arteries run (ie are located in) in the _______ and supply the ______ | choroid layer, pigment layer of retina |
| name the germ layer (neuroectoderm, surface ectoderm, mesenchyme, or ectoderm) responsible for: a) corneal epithelium b) choroid layer | a) surface ectoderm. b) mesenchyme |
| list the origin (neuroectoderm, surface ectoderm, mesenchyme, endoderm) of the following components associated with the eye: a)conjunctival epithelium b)lacrimal gland epithelium c)iridopupillary membrane d) sphincter and dilator pupillae e)sclera f) len | a)conjunctival epi = surface ectoderm b) lacrimal gland epi = surface ectoderm c) iridopupillary membrane = surface ectoderm d) sphincter and dilator pupillae =neuroectoderm e) sclera = mesenchyme f)lens = surface ectoderm |
| what specific part of the eye forms the following: a) outer layer of optic cup b) inner layer of optic cup | a)outer layer = pigment layer of retina b)inner layer= inner layer of ciliary body and inner layer of iris |
| what specific components develop from the neural layer of the retina? | primary: rods and cones... secondary: bipolar cells... tertiary: ganglion cells |
| name vessels which develop and remain in the adult to supply the pigment layer of the retina | short posterior ciliary artery |
| week in which the vascular system appears | 3rd |
| name given to the distal 1/3rd of the bulbus cordis | truncus arteriosus |
| name the adult derivatives of the middle 1/3rd of the bulbus cordis | conus arteriosus and arotic vestibule |
| embryonic component responsible for forming the myocardium | myoepicardial mantle |
| partitioning of the common atrium is first indicated by the appearance of ____ | septum primum |
| forms the auricles | original embryonic common atrium |
| briefly discuss the development of the atrioventricular canals | superior and inferior endocardial cushions grow/fuse = form atrioventricular septum and separate R/L atrioventricular canals |
| the definitive derivative of the left common cardinal vein | oblique vein of the left atrium |
| forms the trabeculated part of the left ventricle ONLY | primitive ventricle |
| foramen ovale forms with in this embryonic structure | septum secundum |
| name 2 muscular components that develop from the 2nd brachial arch | muscles of facial expression, posterior belly of digastric, stapedius, stylohyoid |
| give the derivatives from the cartilage of the 6th brachial arch | cartilage of larynx |
| give derivatives from the cartilage of the 3rd brachial arch | greater horn and inferior portion of hyoid bone |
| concerning the posterior 4/5ths of the inner layer of optic cup: a) give its specific name b) what vessels in the adult remains to supply it? | a) neural retina b) central artery of retina |
| name the 3 embryonic arterial networks formed by the end of the 3r d week | vitelline, umbilical, dorsal aorta |
| specifically is formed by the original embryonic common atrium | auricles of R/L atria |
| embryonic component responsible for forming the myocardium | myoepicardial mantle |
| name given to the middle 1/3rd of bulbus cordis | conus cordis |
| embryonic component forms nontrabeculated part of the right ventricle | conus cordis |
| forms the nontrabeculated part of left ventricle | conus cordis |
| M/C:defects contributing to the tetralogy of Fallot... a)pulmonary stenosis b) atrial septal defect c)ventricular septal defect d) hypertrophy of left ventricle | a) pulmonary stenosis c)ventricular septal defect |
| component that specifically forms the tubotympanic recess which then forms the tympanic cavity and auditory tube | 1st pharyngeal pouch |
| component that specifically forms the saccule | cholear duct |
| the entire heart is derived form the ____ mesoderm located in the _____ plate | splanchnic, cardiogenic |
| what embryonic structures take part in the formation of membranous interventricular septum | R/L conal ridge, posterior endocardial cushion |
| what specific structures is/are derived form the inferior part of the right venous valve of the SA orifice | valve of inferior vena cava, valve coronary sinus |
| vessels which develop from blood islands of the yolk sac | vitelline |
| list hypacial deriviatives of lumbar myotomes | quadratus lumborum |
| name 3 muscular components from the 1st brachial arch | muscles of mastication, mylohyoid, anterior belly of digastric |
| describe formation of the tympanic membrane | ectoderm from floor of 1st pharyngeal cleft, endoderm form expanded 1st pharyngeal pouch, mesoderm intervenes between ectodermal (cleft) and endodermal (pouch) layers |
| during the developement of the inner ear, surface ectoder thicken to form the ___. this soo invaginates to form an ____ which subsequently loses contact with the surface to form the _____ | otic placode, otic pit, otic vessicle |
| give derivatives from the cartilage of the 2nd brachial arch | stapes, styloid process, lesser horn and superior half of hyoid |
| give the specific epimere derivatives of thoracic myotomes | deep intrinsic back muscles thoracic area |
| the hypomere is innnervated by _____ of spinal nerves and forms _____ (flexor, extensor) mm. of the vertebral column | primary ventral rami, flexor |
| name the muscular components formed form the 4th brachial arch | cricothyroid, levator veli palantmi, constrictors of pharynx |
| name the germ layer responsible for: A) uveal layer of iris b) choroid layer | a) mesoderm b) mesoderm |
| during the development of the eye, th eoptic cup is attached to the diencephalon by the narrow ____ which later contains the fibers of the optic nerve. in addition, a space termed the _______ separates the inner and outer layers of the optic cup | optic stalk... intraretinal cleft |
| pg 13 |
Created by:
slalomGS