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Development Flashcards

1
Q

Women is secreting endometrium, what cycle is she in?

A

Luteal

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2
Q

Which organ doesn’t make estrogen?

A 
Adrenal medulla (NOT adrenal cortex)
(secretes catecholamines )
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3
Q

What is an intracellular receptor?

A

Estrogen

includes steroid, estrogen, progesterone, and Vitamin D derivatives

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4
Q

Which of the following acts as nuclear receptor?

A

Vitamin D

endogenous hormones, vitamin A & D

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5
Q

What hormone promotes spermatogenesis?

A

FSH

promote follicle development in female & stimulate Sertoli cells to produce androgen-bind protein

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6
Q

What promotes testosterone production in males & estrogen in females?

A

LH

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7
Q

Granulosa cells in females are similar to _________in males

A

Sertoli Cells

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8
Q

Where is testosterone made?

Which is not a seminiferous tubules?

A

Leydig cells

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9
Q

Where is sperm stored/ matured?

A

epididmyis

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10
Q

What sustains Corpus Luteum after 1st trimester?

A

hCG

hCG is made by placenta –> allows corpus luteum to maintain high progesterone

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11
Q

Which Ig is transferred from mother to fetus?

A

IgG via placenta

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12
Q

Which cell cycle is immediately after fertilization?

A

Meiosis 2

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13
Q

What is NOT transcriptionally active?

A

Heterochromatin (highly condensed)

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14
Q

Which phase is most variable in duration of cell cycle?

A

G1

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15
Q

Which stage is DNA synthesis in?

Histones are synthesized in which phase?

A

S

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16
Q

Hepatocytes form what type of embryonic tissue?

A

Endoderm

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17
Q

What are included in endoderm/

A

GI, Respiratory tract, thyroid, thymus, endocrine glands & organs, auditory system, urinary system, liver, pancreas

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18
Q

What are included in ectoderm?

A

Epithelium of skin, nervous tissues

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19
Q

What are included in the mesoderm?

A

c.t, bone, cartilage, blood cells, all muscles, body cavities, & some cardiovascular & urinary systems
(ureter in kidney)

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20
Q

What are symptoms of Down syndrome?

A

Wide neck, flat nose, and small mouth

21
Q

Genetic make up of Klinefelter

A

47; XXY

22
Q

Genetic make up for Turner’s

A

45: XO

23
Q

What is the name of cellular mass after fertilization but before implantation?

A

Blastula

24
Q

Which stage of the zygote does implantation on the uterus occur?

A

Blastocyst

25
Q

The ligamentum arteriosum is a remnant of?

A

Fetal left ductus arteriosus

26
Q

What goes with ligamentum arteriosum?

A

Left recurrent layrngeal nerve

27
Q

Ligamentum venosum comes from?

A

Ductus venosus

Shuns left umbilical vein blood directly to the inferior vena cava, bypass liver

28
Q

What is the remnant of umbilical vein on the liver?

A

Ligamentum teres

29
Q

What structure is present in fetal heart that allows blood to pass from right to left atrium?

A

Fossa ovalis

30
Q

Where is crista termialis located?

Crista terminalis: junction between sinus venous & heart of embryo

A

Right atrium

31
Q

Anomalous development of external acoustic meatus is a problem with?

A

1st pharyngeal cleft
(1st: incus/malleus
2N: stapes)

32
Q

What does Meckel’s cartilage make?

A

Malleus & Incus: 1st Brachial Arch

33
Q

Where is mandible in relation to Meckel’s cartilage in development?

A

Lateral to it

34
Q

Which arch does the hyoid bone develop from?

A

2ne & 3rd

35
Q

Which arch does the buccinator arise from?

A

2nd

36
Q

Which arch makes the Reichert Cartilage?

A

2nd

37
Q

Which pouch is the parathyroid from?

A

3rd pouch

38
Q

Thymus gland is from which brachial pouches?

A

3rd and 4th

39
Q

What develops the Rathke’s pouch?

A

Anterior Pituitary `

40
Q

Which 2 process forms the philtrum of the lip?

A

Medial nasal process & maxillary process

41
Q

Unilateral cleft lip is caused by?

A

Maxillary prominence on the affected side joining with the merged medial nasal prominence

42
Q

What forms the palate?

A

Fusion of intermaxillary & palatal shelves`

43
Q

Macrostomia is a failure of fusion of?

A

Maxillary & mandible process

44
Q

what structure in the branchial arches failed if baby has bifurcated tongue?

A

Tuberculum impar

45
Q

CN 12 comes form?

A

occipital somites

NOT pharyngeal pouches

46
Q

What comes from upper layer of neural tube?

A

Ascending Sensory Pathway

47
Q

Where is the origin of pons & medula?

A

Rhombencephalon

Hindbrain: pon, medulla & cerebellum

48
Q

What is the pons derived from?

A

Metencephalon

;) (24 decks)

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