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46 Cards in this Set
- Front
- Back
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on the 23rd day after fertilization, the mesoderm has just developed into ... and ...
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somites and somitomeres
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the gut tube is pulled ... with the ... during the early part of neural development
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anteriorly and buccopharyngeal/oral plate
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foregut
midgut hindgut |
identify the labeled structures:
a. b. c. |
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pharynx
allantois yolk sac connecting stalk |
identify the labeled structures:
a. b. c. c |
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where does the first branchial arch start developing?
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on either side of the embryonic pharynx
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the second brancial arch develops before or after the first brancial arch?
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after
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at 3 to 4 weeks, how many branchial arches does the embryo have? and name them
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2
first and second pharyngeal arches |
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as the first arch bends around the oral plate, it forms 2 parts ... and ...
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maxillary division
mandibular division |
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the ... arch develops behind the 2nd branchial or pharyngeal arch
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3rd
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maxillary prominence
mandibular prominence pharyngeal arches 2nd and 3rd stomadeum |
identify the labeled structures:
a. b. c. d. |
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1
2 3 4-6 |
number the following branchial arches:
a. b. c. d. |
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the 1st 2 branchial arches form (before/after) the neuropore closes
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before
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stomadeum (mouth)
anterior 2/3 of tongue posterior 1/3 of tongue esophagus |
identify the labeled structures:
a. b. c. d. |
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foramen cecum
epiglottic swelling laryngiotracheal groove |
identify the following structures:
a. b. c. |
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ectoderm
endoderm mesoderm |
the blue represents?
the yellow represents? the brown represents? |
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brancial means ...?
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gills
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another name for the 2nd branchial arch is ...?
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hyoid arch
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the 2nd branchial arch will develop into ...?
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most of the hyoid bone
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pharyngeal cleft
pharyngeal pouch |
name the following structures:
a. b. |
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aortic arch 1: degenerates
aortic arch 2: degenerates aortic arch 3: carotid arteries (left and right) |
name the arteries and their fate:
a. b. c. |
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aortic arch 4: left becomes arch of aorta
aortic arch 4: right becomes right subclavian artery aortic arch 6: pulmonary arteries |
identify the arteries and their fates:
a. b. c. |
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the maxillary division of the 1st branchial arch gives rise to what cranial nerve(s)? and the nerves are (sensory/motor/mixed)?
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maxillary division of trigeminal
sensory only |
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the mandibular division of the 1st branchial arch gives rise to what cranial nerve(s)? and the nerves are (sensory/motor/mixed)?
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mandibular division of trigeminal
mixed |
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the 2nd branchial arch gives rise to what cranial nerve(s)?
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facial nerve
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the 3rd branchial arch gives rise to what cranial nerve(s)?
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glossopharyngeal nerve
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the 4th and 6th branchial arches gives rise to what nerve(s)?
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vagus nerve
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facial nerves are said to be ... meaning that they they move only skin and do not move bone
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superficial
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what cranial nerve number is the maxillary division of trigeminal?
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cn5
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what cranial nerve number is the mandibular division of trigeminal?
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cn5
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what cranial nerve number is the facial nerve?
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cn7
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what cranial nerve number is the glossopharyngeal nerve?
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cn9
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what cranial nerve number is the vagus nerve?
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cn10
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the mandibular branch nerve (cn5) innervates the muscles of ...
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mastication
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1st branchial arch gives rise to what muscle?
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muscles of mastication
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2nd branchial arch gives rise to what muscles?
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muscles of facial expression
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3rd branchial arch gives rise to what muscles?
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stylopharyngeus muscle
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4th branchial arch gives rist to what muscles?
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muscles of larynx and pharynx
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the tongue is innervated by ...?
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cn12
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branchial groove 1 gives rise to what?
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external auditory meatus
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pharyngeal pouch 1 gives rise to what?
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middle ear and auditory tube
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merckel's cartilage is derived from ... and gives rise to ...?
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1st branchial arch
degenerates and becomes nothing (gives rise to couple of osicles in middle ear) |
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what is the fate of branchial grooves 2 through 6?
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they fuse into a cervical sinus, which disappears (occasionally forms cyst)
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pharyngeal pouch 2 gives rise to what?
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palatine tonsil
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pharyngeal pouch 3 gives rise to what?
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inferior parathyroid and thymus
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pharyngeal pouch 4/5 gives rise to what?
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superior parathyroid and c-cells of thyroid (c-cells regulate calcium)
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the anterior-most region of the gut tube becomes the ...
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pharynx
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