A+P: Peds Digestive System Flashcards
When does the primitive gut form?
around 3 weeks gestation
What is the primitive gut formed by?
endoderm - epithelial lining of alimentary canal
The oral membrane becomes the…
opening of the mouth after a fusion of foregut & stomodeum (surface ectoderm)
The cloacal membrane becomes the…
anus after the fusion of hindgut & proctodeum (ectodermal depression)
What happens at week 5 of gestation for the digestive system?
alimentary canal becomes 1 “tube from mouth to anus & then eventually matures & buds into digestive tract
During early development, how are nutrients recieved?
primarily via placenta
- GI practices w/ swallowing of amniotic fluid to help mature the GI tract
List some challenges of feeding postpartum.
- reflexes for suckling
- peristalsis
- Immaturity of digestive tract
- ankyloglossia
- tracheoesophageal fistula
Describe the reflexes of suckling.
- Rooting reflex: direct infants towards nipple
- Sucking reflex: helps nipple latching & swallowing
Why do infants eat so frequently?
stomach are very small
Describe peristalsis in babies.
- inefficient
- freq emesis/regurg
What happens if you introduce water early?
may delay maturation of GI system
How long should water be avoided?
until at least 4 months (only up to 2oz)
Describe effects of immature digestive tract.
- underdeveloped coordination for chewing & swallowing,
- developing metabolism
- lack of teeth makes it hard to breakdown anything other than milk
When does dentition usually begin?
around 4-6 months
What is ankyloglossia?
a congenital condition causing short lingual frenulum
