BE 03 Flashcards
(138 cards)
In order to properly BF w/ good latch, mother must be competent in which two things?
Positioning
Understanding baby’s “feed me” cues
BREAST ANATOMY:
What is the BF function of the normal, pendulous form of the lactating breast?
Facilitates positioning of baby in arms, easy latching of infant cradled beneath breast.
BREAST ANATOMY:
What is the BF function of the secretions of the Montgomery follicles on areola?
Guide baby to breast and stimulate suckling behavior
BREAST ANATOMY:
What is the BF function of the darker skin color of nipple and areola during pregnancy (in some women)?
May act as a visual guide for baby
BREAST ANATOMY:
What is the BF function of using a wide gap and deep latch by baby?
Infant will form teat from nipple & much of areola, which reaches back of mouth. Flexible and elastic breast tissue facilitates optimal, comfortable lengthening of breast & nipple to facilitate this.
BREAST ANATOMY:
What is the BF function of the thinner layer of subcutaneous fat around areola?
Permits suckling to more easily stimulate 4th intercostal nerve, initiating milk ejection. Meanwhile, the easily compressible ducts can respond to the positive and negative pressures exerted during suckling.
BREAST ANATOMY:
What is the BF function of milk ducts branching close to base of nipple and temporarily increasing in diameter?
To accommodate increase in milk volume at milk ejection.
See BE03 p. 4
Anatomy of the lactating breast
Infant skull is composed of which 3 components?
How many bones total?
Cranium
Facial Skeleton
Mandible (bottom jaw)
22 bones total.
See BE03 p. 6
The bones of the infant cranium
BONES OF INFANT CRANIUM: What is the function of the sutures and fontanelles in infant skull?
Allow movement and overlapping of bones during passage through birth canal.
BONES OF INFANT CRANIUM: List.
2 frontal bones (fuse after birth) - joined by frontal suture
2 parietal bones - joined to frontal bones by coronal suture, joined to each other at sagittal suture.
2 temporals
occipital bone
ethmoid bone & sphenoid bone
INFANT FACIAL BONES: Maxillae
- size
- areas of skull it forms (5)
Largest bone of face
Forms upper jaw, hard palate, floor of nose, part of orbits (eye sockets), tooth sockets for upper teeth
INFANT FACIAL BONES: Palatine and nasal bones form….
Form hard plate and nose
INFANT FACIAL BONES: inferior nasal conchae and lacrimal bones
Remember this.
INFANT FACIAL BONES: zygomatic bones form….
form cheek promonences
INFANT FACIAL BONES: the vomer does…
separates nasal cavity into left and right sides.
INFANT FACIAL BONES: Describe location of mandible
hinged to temporal bones at temporo-mandibular joints
INFANT FACIAL BONES: Describe function and location of hyoid bone. Discuss cartilage vs bone of hyoid. Why is hyoid so important in BF?
Hyoid cartilage provides attachment to tongue above, larynx below, epiglottis and pharynx behind.
Located in neck at level of base of mandible and above thyroid cartilage.
Develops from cartilage to bone during childhood.
Important in BF because extension of head will slide hyoid and tongue forward, while flexion of head will slide the backward.
As a result of moulding (movement and overriding of the cranial bones at sutures and fontanelles) during birth & in utero, how can the bones be moved back into position after birth? Why is this important to BF?
By yawning, sucking and crying. Importatnt because the cranial nerves involved in BF (6/12) follow the sutures.
How many cranial nerves?
How many of these involved in infant feeding?
12 total
6 BF
Where do the cranial nerves originate, how do they reach their destination?
Originate in brainstem; exit through base of brain; follow sutures.
What is the general function of the cranial nerves?
Involved in coordination of suckling, swallowing and breathing. They provide motor and sensory functions.
CRANIAL NERVES: CN V: Trigeminal
- motor/sensory
- what does it supply
- how does it transmit function
- mandibular branches
- motor & sensory
- supplies eyes, mandible, maxilla
- maxilla carries sensory impulses fr mucous membrane of nose, skin of cheek, side of forehead, upper lip and teeth
- mandibular branches: sensory impulses fr side of head, chin, mucous membranes of mouth, lower teeth & anterior 2/3 of tongue