embryology and histology Flashcards Preview

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Flashcards in embryology and histology Deck (22):
1

gives rise to all neurons and supporting cells; forms neural plate "neuroectoderm"

ectoderm

2

induces ectoderm to form neuroectoderm (remnant IVD as "nucleus pulposus"

notochord

3

forms neural groove which houses the spinal cord and brain vesicles

neural plate

4

neural crest develops into (11)

branchial arches, PNS, schwann cells pia arachnoid meninges, sacral parasymps, spinal and autonomic ganglia, mesencephalic nucleus of V, melanocytes, bones CT of head, DRG, CN V, VII, IX, X ganglia, adrenal gland medulla

5

neural plate (brain cells) develop into [MOANER]

macroglial cells (oligodendrocytes astroctes), neurons CNS, ependymal cells, retinal cells

6

forms the lining of the digestive tube and its associated structures, division foregut/midgut; liver and pancreatic buds

endoderm epithelium

7

glands buccal cavity, esophagus, stomach, pharyngeal pouches and pharynx

foregut

8

duodenum, jejunum, appendix, part of transverse colon

midgut

9

part transverse, sigmoid and descending colon, rectum and upper anal canal

hindgut

10

urinary bladder, vagina, urethra, prostate and urethral glands (PEEPEE :P)

allantois

11

somite cells form the

sclerotome --> vertebral column (cartilage and bone)

12

foramen ovale becomes

fossa ovalis (bt interatrial septum)

13

ductus arteriosus becomes

ligamentum arteriosum (bypasses lung pulmonary trunk to arch of aorta)

14

ductus venosus becomes

ligamentum venosum (bypasses sinusoids of fetal liver)

15

umbilical vein becomes

ligamentum teres (round ligament)

16

umbilical arteries becomes

medial umbilical ligaments

17

remnant of duct of allantois

urachus

18

m: muscles of mastication and jaw closing muscles skeletal structures: malleus (meckels cartilage) incus (quadrate cartilage) CN: mandibular branch of V (V3)

FIRST branchial arch

19

m: m of facial expression and jaw opening muslces, stylohyoid, stapedius; skeletal structures: stapes, styloid CN: facial VII

SECOND branchial arch

20

m: stylopharyngeus skeletal structures: cornu, hyoid CN: glossopharyngeal IX

THIRD branchial arch

21

m: pharyngeal, cricothyroid, levator palatine skeletal structures: thyroid cartilage, cricoid cartilage CN: superior laryngeal of Vagus (X)

FOURTH branchial arch

22

m: laryngeal sk struc: arytenoid, corniculate cartilage, cuneiform cartilage CN: inferior laryngeal of Vagus X (recurrent branch)

SIXTH branchial arch