primary plasmodesma

A plasmodesma that consists of a simple, single channel; found predominantly in young tissue and formed as a function of cell plate formation during cytokinesis.

multicellular organism development

The biological process whose specific outcome is the progression of a multicellular organism over time from an initial condition (e.g. a zygote or a young adult) to a later condition (e.g. a multicellular animal or an aged adult).

lactation

The regulated release of milk from the mammary glands and the period of time that a mother lactates to feed her young.

regulation of developmental process

Any process that modulates the frequency, rate or extent of development, the biological process whose specific outcome is the progression of a multicellular organism over time from an initial condition (e.g. a zygote, or a young adult) to a later condition (e.g. a multicellular animal or an aged adult).

prolactin metabolic process

The chemical reactions and pathways involving prolactin, a protein hormone of the anterior pituitary gland that promotes lactation in response to the suckling stimulus of hungry young mammals.

positive regulation of developmental process

Any process that activates or increases the rate or extent of development, the biological process whose specific outcome is the progression of an organism over time from an initial condition (e.g. a zygote, or a young adult) to a later condition (e.g. a multicellular animal or an aged adult).

negative regulation of developmental process

Any process that stops, prevents or reduces the rate or extent of development, the biological process whose specific outcome is the progression of an organism over time from an initial condition (e.g. a zygote, or a young adult) to a later condition (e.g. a multicellular animal or an aged adult).

uterine smooth muscle contraction

A process in which force is generated within smooth muscle tissue, resulting in a change in muscle geometry. This process occurs in the uterus. Force generation involves a chemo-mechanical energy conversion step that is carried out by the actin/myosin complex activity, which generates force through ATP hydrolysis. The uterus is a muscular organ of the female mammal for containing and usually for nourishing the young during development prior to birth.

parturition

The reproductive process in which the parent is separated from its offspring either by giving birth to live young or by laying eggs.

beak formation

The process that gives rise to the beak. This process pertains to the initial formation of a structure from unspecified parts. The avian beak is an external anatomical structure, in the head region, that is adapted for feeding self and young, catching prey, probing, etc. It encompasses, but is not restricted to, the maxilla, mandible, maxillary rhamphotheca, mandibular rhamphotheca, nostril, nasal fossa, nasal bones, egg tooth and rictus.