LBOBI19 LE4 EXAM QUESTIONS AND CORRECT VERIFIED ANSWERS GRADED A+ WITH RATIONALE ANSWERS

LBOBI19 LE4 EXAM QUESTIONS AND CORRECT VERIFIED ANSWERS GRADED A+ WITH RATIONALE ANSWERS each lens vesicle is completely separated from, and covered externally by ______, the future ______ - ANSWER -skin ectoderm; corneal epithelium choroid is from what germ layer - ANSWER -both NCC and mesoderm sclera is from what - ANSWER -NCC lateral walls of the brain begin to bulge outward to form the - ANSWER -cerebral hemisphere of the telencephalon cavities of the cerebral hemisphere - ANSWER lateral ventricles (first and second ventricle) connection between lateral and third ventricle later become _____ - ANSWER interventricular foramina portion of telencephalon wall lying between 2 cerebral hemispheres - ANSWER lamina terminalis 2 | Page what are commissures - ANSWER -transverse bundles of nerve fibers commissures will later form within the lamina terminalis to ? - ANSWER interconnect the cerebral hemispheres nasal pits - ANSWER -Depressions in center of each nasal placode that evolve into the nasal cavities name all 12 cranial nerves - ANSWER -1 - olfactory 2 - optic 3 - oculomotor 4 - trochlear 5 - trigeminal 6 - abducens 7 - facial 8 - auditory 9 - glossopharyngeal 10 - vagus 11 - spinal accessory 3 | Page 12 - hypoglossal Abducens CN6 innervates - ANSWER -lateral rectus Oculomotor (III) innervates - ANSWER -Extrinsic eye muscles Inferior oblique Inferior superior medial rectus eye muscle Dendrites develop from young neurons within each BLANK and differentiate as BLANK - ANSWER - Nasal pit; olfactory receptors Elevated regions of head mesenchyme covered by skin ectoderm to either side of each nasal pit - ANSWER -Lateral and medial nasal processes Upper jaw consists of - ANSWER -Medial nasal process fused laterally with maxillary process and medically with other medial nasal process t Lateral nasal process eventually forms - ANSWER Sides of the nose Motor nucleus - ANSWER -Slight thickenings or the floor of the mesencephalon Formed by an accumulation of cell bodies of young neurons within the intermediate zone