Anatomy: embryology Flashcards

1
Q

what to endo-, meso-, and ectoderm all become

A

endo = gut, meso = skin and brain, ecto = surfaces and lining

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what are the 3 initial organisations of mesoderm

A

paraxial, intermediate, visceral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what pouch does the palatine tonsil come from

A

2nd pharyngeal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

where are cervical cysts and fistulas commonly found and when do they present

A

anterior border of sternocleidomastoid. not seen at birth but enlarges in childhood. (lateral or external)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

when does the tongue appear and what is it made of

A

4th week, 2 lateral swellings and one midline

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what causes thryoglossal cysts

A

inferior migration of thyroid can leave accessory glands/ remnants in it’s course

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

where do maxilla, mandible, zygomatic and temporal bones originate from

A

pharyngeal arch 1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

where do muscles of mastication originate from

A

pharyngeal arch 1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

where do muscles of facial expression originate from

A

pharyngeal arch 2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

where do upper and mid-facial structures originate from

A

proliferating mesenchyme ventral to brain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what surrounds the primitive oral cavity at week 4

A

stomedeum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what forms the nasal placodes

A

thickening of frontonasal prominence

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

where is the nasolacrimal groove

A

between maxillary and lateral nasal prominence

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what makes the upper lip (prominences)

A

2 medial nasal and 2 maxillary

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what makes the lower lip (prominences)

A

manidibular

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what makes the nose (prominences)

A

frontonasal, medial nasal, lateral nasal

17
Q

how doe nasal cavities form (week 5 and 6)

A

nasal pits deepen and penetrate mesenchyme. intermaxillary segment is connected by nasal fin, nasal fin opens nasal sac

18
Q

how doe nasal cavities form (week 7)

A

nasal and oral cavities communicate via primitive choanae, definitive chonae open due to formation of secondary palate

19
Q

what does the definitive choana mark

A

division of nasopharynx and nasocavity

20
Q

how does secondary palate develop, what happens if this doesnt happen

A

right and left palatal shelves fuse, clefts