Integument

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integument

1. the protective layer around an ovule that becomes the seed coat
2. the outer protective layer or covering of an animal, such as skin or a cuticle

Integument

 

the part of the ovary on seed plants that encloses the nucellus (the central part of the ovary). The ovaries of a number of plants have one integument, while others, particularly in the monocotyledonous plants, have two. After fertilization the integument turns into a seed coat.


Integument

 

in animals, including man, the tissues that cover the body and perform protective, tactile, metabolic (including gas exchange), and excretory functions. The integument sometimes performs the function of feeding, associated with the complete reduction of the intestine in tapeworms, acanthocepha-lans, and Pogonophora. Thermoregulation is sometimes a function of the integument.

In most invertebrates the integument consists of cutaneous epithelium, or epidermis, which is of ectodermal origin. It includes a mesodermal connective-tissue layer, or derma, in such invertebrates as nemertines and cephalopod mollusks and in vertebrates, including man. Derivatives of the integument are cutaneous glands, cuticles, the chitinous armor of arthropods, the shells of mollusks, scales, feathers, hair, claws, and nails.

integument

[in′teg·yə·mənt]
(anatomy)
An outer covering, especially the skin, together with its various derivatives.
References in periodicals archive ?
Based on the integumental pore pattern, Alvarez-Silva and Ramirez-Ruiz (1999) characterized two intraspecific groups of the postlarval shrimp Litopenaeus vannamei (Boone, 1931).
Integumental lesions caused by ectoparasites in a wild population of the side-blotched lizard (Uta stansburiana).
Because the integumental surfaces of these animals are in intimate contact with the surrounding milieu, passive water loss and uptake represent two of the major osmoregulatory challenges that need compensation.
Integumental water movement and rate of water ingestion during rain harvesting in the Texas horned lizard.
2) is built of 1) the dorso-lateral integumental folds (f) of the anterior carapace (= dorsal limitation), 2) coxa I(= ventral limitation), and 3) a heavy wall of cuticular papillae (= c and cp: outer lateral limitation).
The specific epithet is a reference to the intense blue coloration and strongly rugose integumental sculpturing of the species.
ranae have direct life cycles and infection occurs by integumental penetration (Anderson 1992).
El patron de perforacion integumental se ha perfilado como una herramienta nueva en la identificacion de los crustaceos, ya que es constante en cada especie y en cada uno de sus estadios, de aqui que el patron, numero y tipo de perforacion, formen un grupo de caracteres taxonomicos y filogeneticos utilizado para separar subespecies (Koomen 1992).
This was based upon the microscopic observation of the integumental morphogenesis of the dactylopodite and the propodite from a freshly cut pereiopod.
The formation of the larval retractor muscle was followed by formation of integumental attachment.
Higher animals cope with invading pathogens by the activities of a variety of defense systems involving elements of the integuments and the extracellular matrix, specialized immune defense cells, and effector proteins and peptides that are found at the integumental surfaces and in the blood.