- allantoic s. the narrow connection between the intraembryonic portion of the allantois and the extraembryonic allantoic vesicle.
- body s. the extraembryonic precursor of the connecting s. or umbilical cord by which the embryo is attached to its trophoblastic chorion. SYN: connecting s..
- connecting s. SYN: body s..
- s. of epiglottis the lower end or pedicle of the cartilage of the epiglottis, attached to the superior notch of the thyroid cartilage. SYN: petiolus epiglottidis.
- infundibular s. SYN: infundibular stem.
- optic s. the constricted proximal portion of the optic vesicle in the embryo; it contributes to the optic nerve.
- pineal s. the attachment of the pineal body to the roof of the third ventricle; it contains the pineal recess of the third ventricle.
- pituitary s. a process comprising the tuberal part investing the infundibular stem that attaches the hypophysis to the tuber cinereum at the base of the brain.
- yolk s. the narrowed connection between the intraembryonic gut and the yolk sac; its walls are splanchnopleure. SYN: umbilical duct, vitelline duct, vitellointestinal duct.
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stalked 'stȯkt adj
stalk·less adj
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(stawk) an elongated, more or less slender anatomical structure resembling the stem of a plant; see also peduncle and pedunculus.Medical dictionary. 2011.