Term
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Definition
1. Maxillary arteries
2. May contribute to external carotid arteries |
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Term
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Definition
1. Stapedial arteries
2. Hyoid artery |
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Term
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Definition
1. Common carotid arteries
2. Internal carotid arteries |
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Term
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Definition
1. Proximal part of right subclavian artery
2. Part of the arch of aorta |
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Term
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Definition
1. Part of R and L pulmonary arteries
2. Ductus arteriosis (shunts blood from pulmonary trunk to aorta bypassing the lungs in fetus) |
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Term
| Maxillary prominence gives rise to what? |
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Definition
| maxilla, zygomatic bone, and squamous part of temporal bone |
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Term
| Dorsal end of 1st arch cartilage(Meckel's cartilage) give rise to what? |
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Definition
| Incus and malleous (inner ear) |
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Term
| First pharyngeal arch develops into what two prominences |
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Definition
| maxillary prominence and mandibular prominence |
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Term
| Mandibular prominence forms what |
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Definition
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Term
|
Definition
1. maxillary prominence
2. mandibular prominence
3. muscles of mastication
4. Trigeminal nerve |
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Term
| What fibers innervate muscles of mastication and CN V |
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Definition
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Term
|
Definition
1. Stapes
2. Styloid process of Temporal bone
3. Stylohyoid ligament
4. part of hyoid bone
5. Facial nerve
6. Muscles of facial expression
7. Stapedius
8. Stylohyoid muscle |
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Term
|
Definition
1. part of hyoid bone
2. Stylopharyngeus
3. Glossopharyngeal (CN 9) |
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Term
| 4th and 6th fuse to form what and what is included |
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Definition
laryngeal cartilages
1. muscles of pharynx and larynx
2. striated muscles of the esophagus
3. Branches of vagus nerve |
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Term
|
Definition
upper 1/3 - skeletal muscles
middle 1/3- mixed
inferior 1/3- smooth muscles |
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Term
|
Definition
| rudimentary and has no derivatives |
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Term
| Primitive mouth (stomoderm) is separated from the primitive pharynx |
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Definition
| buccopharyngeal (oropharyngeal) membrane |
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Term
| What is surrounded by the first arches |
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Definition
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Term
| What membrane ruptures about day 26 and what does it do |
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Definition
| buccopharyngeal (oropharyngeal)membrane; It brings the primitive gut into contact with the amniotic fluid cavity |
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Term
| What is the fate of pharyngeal arches |
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Definition
1. During 5th week, the 2nd pharyngeal arch enlarges and overgrows 3rd and 4th arches
2. This forms the cervical sinus
3. By end of 7th week, the 2nd-4th grooves and cervical sinus have disappeared |
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Term
| What is derived from the foregut and what does it do |
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Definition
| primordial pharynx; It widens cranially and joins stomodeum and narrows caudally and joins esophagus |
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Term
| What does the endoderm of pharynx line and what does is pass into |
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Definition
| internal aspects of pharyngeal arches and passed into a pharyngeal pouch (balloon-like diverticula) |
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Term
| What does the endoderm of pharynx line and what does is pass into |
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Definition
| internal aspects of pharyngeal arches and passed into a pharyngeal pouch (balloon-like diverticula) |
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Term
| What forms btwn pharyngeal arches |
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Definition
|
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Term
| How many pouches found btwn 1st and 2nd arch |
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Definition
|
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Term
| How many pairs of pharyngeal arches |
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Definition
| 4 pairs; 5th pair is absent or very small |
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Term
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Definition
| A.It expands into a tubotympanic recess 1. the distal part contains the 1st pharyngeal groove and later contributes to formation of tympanic membrane 2. the middle part- tympanic cavity and mastoid antrum B. Pharyngotympanic tube-equalizes ear pressure (auditory tube) |
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Term
|
Definition
1. the 2nd pouch is obliterated as palatine tonsil develops
2. part of pouch remains a tonsillar sinus |
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Term
|
Definition
1. expands and develops solid, doral bulbar part and a hollow, elongate ventral part
2. its connection to the pharnyx is reduces to a narrow duct that degenerates
3. Inferior parathyroid gland
4. thymus |
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Term
| Inferior parathyroid gland |
|
Definition
1. By 6th week the epithelium of each dorsal bulbar part begins to differiate in this
2. The 2nd pharyngeal pouch detaches from pharyngeal wall and migrates inferiorly and medially, coming to rest by week 7 on the dorsal side of the inferior ends of the thyroid lobes |
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Term
|
Definition
1. the epithelium of the elongate parts of the ventral parts of the 3rd pair of pharyngeal pouches proliferates, obliterating their cavity.
2. The bilateral primordial of the thymus come together in the median plane to form the thymus
3. btwn 4th-7th week, the thymus gland lose their connection with the pharnyx and migrate to the definitive location inferior and ventral to developing thyroid and just dorsal to sternum
4. they fuse to form a single gland |
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Term
|
Definition
1. also forms dorsal bulbar and elongates ventral parts
2. connection with pharnyx is reduced to a narrow duct that soon degenerates
3. Superior parathyroid gland
4. calcitonin cells of thyroid cells |
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Term
| Superior parathyroid gland |
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Definition
1. Early in 5th week, the rudiments of the superior parathyroid gland from 4th pharyngeal pouch
2. it detaches from the pharynx and rests my 7th week slightly superior to the inferior parathyroid glands
3. Superior parathyroids arise more inferiorly on the pharynx than the inferior parathyroids |
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Term
| What does the tongue take shape from |
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Definition
| a series of ventral swellings in the floor of the pharynx about the same time as the palate forms in the mouth |
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Term
| In a 5 week old embryo the tongue is represented by what |
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Definition
| a pair of lateral lingual swellings in the ventral regions of the 1st pharyngeal arches and two median unpaired swelling |
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Term
| The tuberculum impar is located between |
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Definition
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Term
| the copula unites what and is formed by the fusion of what |
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Definition
| it unites the 2nd and 3rd arches and is formed by the fusion ofthe ventromedial parts of the 2nd pair of pharyngeal arches |
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Term
| The foramen cecum marks what |
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Definition
| the original location of the thyroid primordium |
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Term
| What serves as a convenient landmark and it delineating the border between what? |
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Definition
| foramen cecum; original tuberculum impar and copula |
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Term
| the swelling caudal to the copula |
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Definition
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Term
| Growth of the body of the tongue is accomplished by what |
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Definition
| the great expansion of lateral lingual swelling with a minor contribution by the tuberculum impar |
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Term
| What happens when the lateral swellings increase in size and what do they form |
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Definition
| they overgrow the tuberculum impar and merge forming the anterior 2/3 of tongue body |
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Term
| What is the roof of the tongue derived from? |
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Definition
| the copula along with additiona ventromedial tissue between the 3rd and 4th pharyngeal arches |
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