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NWHSU Mash GA2Q1E EE
NWHSU Mash GA 2 Quiz 1 Embryo Ear, Eyes, Branchial Arches, Misc
| Question | Answer |
|---|---|
| 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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