Search for dissertations about: "close apposition"

Found 3 swedish dissertations containing the words close apposition.

  2. 1. Visual ecology of insect superposition eyes

    Author : Pär A Brännström; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Animal physiology; tiger beetle; hawkmoth; mayfly; insect; visual ecology; eye design; vision; compound eye; Djurfysiologi;

    Abstract : In the superposition compound eye each rhabdom (light sensitive unit) receives light through many ommatidial facets, while in the apposition compound eye every rhabdom receives light from a single facet. The superposition design increases photon capture, which is an advantage in dark environments. READ MORE

  4. 2. Anatomical studies of hypothalamic thyrotropin-releasing hormone : implications for motivated states

    Author : Emilia Horjales-Araújo; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : The survival of every animal as an organism and species depends on three motivated states: ingestive, defensive and reproductive. Regulation of these states is coordinated by the hypothalamus through the coordination of three principal output pathways: behavioural, endocrine and autonomic. READ MORE

  5. 3. The diverse role of laminin isoforms in neuronal cells, human mast cells and blood platelets

    Author : Wondossen Sime; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Laminins; extracellular matrix; integrins; tooth pulp fibroblasts; mast cells; megakaryocytes; platelets; cell adhesion; cell migration; neurite outgrowth;

    Abstract : The close interaction of cells with other cells and with extracellular matrix (ECM) components is a prerequisite in a number of biological activities. During development of the nervous system, axons often navigate a considerable distance depending on the type of molecular factors they encounter. READ MORE