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NWHSU Mash GA 2 Quiz 1 Embryo Ear, Eyes, Branchial Arches, Misc

Component that specifically forms from the saccule Choclear duct
component that SPECIFICALLY develops from the utricle Semicircular canals
During the development of the inner ear, surface ectoderm thickens to form the _________. This item soon invaginates to form an ______ which subsequently loses contact with the surface to form the _____. Otic placode, otic pit, otic vessicle
component that forms the external auditory meatus 1st pharyngeal cleft
Component that specifically forms the tubotympanic recess which then forms the tympanic cavity and auditory tube 1st pharyngeal pouch
Describe the formation of the tympanic membrane (mention germ layer(s) and embryonic structure(s) involved) Ectoderm from floor of 1st pharyngeal cleft, endoderm from expanded 1st pharyngeal pouch, mesoderm intervenes between ectodermal (cleft) and endodermal (pouch) layers
Name 3 muscular components formed from the 1st branchial arch mm. of mastication, mylohyoid, ant. belly of digastric, tensor tympani, tensor veli palatine
Name the nerve of the 2nd branchial arch. Facial (CN VII)
Give the (3) derivatives from the cartilage of the 2nd branchial arch Stapes, styloid process, stylohyoid ligament
Give the derivatives from the cartilage of the 2nd branchial arch. Stapes Styloid process Lesser horn and superior half of hyoid
Name 2 muscular components that develop from the 2nd branchial arch. (for a muscle group, do NOT list individual mm. of the group- just list the group) mm. of facial expression, post. belly of digastric, stapedius, stylohyoid
Give the derivatives from the cartilage of the 3rd branchial arch Greater horn and inf. portion of hyoid bone
Nerve of the 3rd pharyngeal arch CN 9 glossopharyngeal
Name the muscular components formed from the 4th branchial arch. Cricothyroid Levator veli palantmi Constrictors of pharynx
Give the derivatives from cartilages of the 4th and 6th branchial arches. Cartilages of larynx
Give the derivatives from the cartilage of the 6th branchial arch Cartilages of the larynx
What is the fate of the preotic myotomes? Form eye muscles
Give 3 derivatives from the hypomere of the cervical myotomes. Scalenes Infrahyoid Geniohyoid
Give the specific hypomere derivative(s) of thoracic myotomes Intercostal mm., subcostal m., abdominal obliques
Give the specific epimere derivative(s) of thoracic myotomes. Deep intrinsic back muscles thoracic area
List the hypaxial (aka hypomere) derivative(s) of the lumber myotomes Quadratus lumborum
Make a short flow diagram showing the differentiation of a somite. Somites differentiate into Sclerotomes and Dermatomes, Myotomes develop partly from Dermatomes
The hypomere is innervated by ___________ of spinal nerves and forms _________ ( flexor, extensor ) muscles of the vertebral column. Primary ventral rami Flexor
Give hypomere derivatives of the sacrococcygeal myotomes Skeletal mm. of anus and sex organs, muscles of pelvic diaphragm
Name vessels which develop and remain in the adult to supply the pigment layer of the retina. Short post.ciliary a.
As the eye develops, the short posterior ciliary arteries RUN (i.e., are located in) in the ______ and SUPPLY the ____________ Choroid layer, pigment layer of retina
Concerning the post. 4/5ths of the INNER layer of the optic cup: a) give its specific name b) what vessel in the ADULT remains to supply it? a) neural retina b) central artery of retina
What SPECIFIC part of the eye forms from the following? a) outer layer of the optic cup ( posterior 4/5ths )- b) inner layer of the optic cup ( anterior 1/5th )- a) Pigment layer of retina b) Inner layer of ciliary bodies and iris
During the development of the eye, the optic 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
List the origin (neuroectoderm, surface ectoderm, mesenchyme, or endoderm) of the following components associated with the eye: a) conjunctival epithelium b) lacrimal gland epithelium c) iridopupillary membrane a) surface ectoderm b) surface ectoderm c) surface ectoderm
List the origin (neuroectoderm, surface ectoderm, mesenchyme, or endoderm) of the following components associated with the eye: d) sphincter and dilator pupillae e) sclera f) lens d) neuroectoderm e) mesenchyme f) surface ectoderm
List the origin (neuroectoderm, surface ectoderm, mesoderm/mesenchyme, or endoderm) of the following eye components: a) lens- b) neural retina- a) surface ectoderm b) neuroectoderm
Name the germ layer (neuroectoderm, surface ectoderm, mesenchyme, or endoderm) responsible for: a) corneal epithelium b) choroid layer a) surface ectoderm b) mesenchyme
Name the germ layer responsible for: a) uveal layer of iris- b) choroid layer- a) Mesoderm b) Mesoderm
The uveal iris forms what part of the iris (outermost part, inner layer, pigment layer, entire iris)? Outermost part
What causes coloboma? ( BE SPECIFIC ) Failure of choroid fissure to fuse/close
What SPECIFIC components develop from the neural layer of the retina? Primary rods and cones, secondary bipolar cells, tertiary ganglion cells
Draw a small diagram showing the most usual appearance of coloboma in the ADULT eye. Unfinished development Of the choroid fissure , draw partial circle without bottom connecting
Name the adductor muscles of the eye. superior rectus m., inferior rectus m., medial rectus m.
The TWO most effective methods of birth control are: Anatomy lectures, small children (was on MASH, may be a joke but I included it - hee hee)
Hypaxial (aka Hypomere) muscles are (pre or postaxial) in position to what axis preaxial, spinal
Six elevations termed ... appear on each side of the 1st pharyngeal cleft. Specifically, the elevations evetually form the hillocks, auricle
Name the muscular derivatives of the occipital myotomes Tongue muscles
What are the derivatives of the hyaloid artery Central artery of the retina, hyaloid canal of the vitreous body
During development, name given to the thin layer of mesenchyme located immediately anterior to the pupil; it layer disappears. Iridopupillary membrane
Created by: AnatomyMash

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