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Anatomy Exam II > Embryology > Flashcards

Embryology Flashcards

1
Q

Pharyngeal arch

A

N: V- maxillary and mandibular
Muscles: mastication (temporal, masseter, medial, lateral pterygoids); mylohyoid, anterior belly digastric, tensor palatine, tensor tympani

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2
Q

CAP

A

clefts- ectoderm
arches- mesoderm
pouches- endoderm

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3
Q

Pharyngeal pouch: 1

A

Tympanic (middle ear) cavity, auditory (eustachian) tube

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4
Q

Pharyngeal pouch: 2

A

Palatine tonsils, tonsillar fossa

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5
Q

Pharyngeal pouch: 3

A

Inferior parathyroid gland, thymus

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6
Q

Pharyngeal pouch: 4

A

Superior parathyroid gland ultimobranchial body (parafollicular C cells of the thyroid gland)

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7
Q

Fate of 1st cleft

A

external auditory meatus

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8
Q

Fate of 2, 3, 4 cleft

A

obliterated by overgrowth of the 2nd arch and 4th arch toward each other forming a cervical sinus (if persists forms the branchial cyst or fistula)

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9
Q

Pharyngeal arch: 2 Hyoid

A

N: Facial
M: facial expression (buccinator, auricularis, frontalis, platysma, orbicularis oris and oculi), p. belly digastric, stylohyoid, stapedius

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10
Q

Pharyngeal arch: 3

A

N: glossopharyngeal
M: stylopharyngeus

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11
Q

Pharyngeal arch: 4

A

Superior laryngeal branch

M: cricothyroid, levator palatine, constrictors of pharynx

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12
Q

Pharyngeal arch: 6

A

Recurrent laryngeal branch

M: Intrinsic muscles of larynx

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13
Q

Midline cyst

A

Thyroglossus cyst

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14
Q

Lateral cyst

A

Brachial cyst

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15
Q

Truncus asteriosus

A

Aorta

Pulmonary trunk

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16
Q

Bulbus cordis

A

Smooth part of right and left ventricle

17
Q

Primitive ventricle

A

Rough part of right and left ventricle

18
Q

Primitive atrium

A

Rough part of right and left atrium

19
Q

Sinus venosus

A

Smooth part of right atrium, coronary sinus, oblique vein of left atrium

20
Q

Foramen ovale

A

Shunt between right atrium and left atrium, during fetal life pressure is higher in right atrium versus left atrium causing blood to flow from right to left

21
Q

Tetralogy of Fallot

A

Pulmonary stenosis
Right ventricular hypertrophy
Overriding aorta
Ventricular septal defect (VSD)

(marked cynosis)- oxygenated mixing with deoxygenated blood

22
Q

Patent foramen ovale

A

Incomplete fusion of septum primum & septum secundum

23
Q

3rd aortic arch

A

Common carotid and most of internal carotid

24
Q

4th aortic arch

A

Left: aortic arch
Right: subclavian artery

25
Q

6th aortic arch

A

Left: ductus arteriosus, left pulmonary artery
Right: right pulmonary artery

Anatomy Exam II (13 decks)

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