Web-based resource of cardiovascular physiology concepts that has been written for students, teachers, and health professionals. The contents of this site can be entered by several different routes.
Cardiothoracic Surgery Notes, an online interactive review developed by residents in cardiothoracic surgery. CTSN provides a resource for fundamental essential facts for board review and sources for additional information.
Cytokines are a unique family of growth factors. Secreted primarily from leukocytes, cytokines stimulate both the humoral and cellular immune responses, as well as the activation of phagocytic cells. Cytokines that are secreted from lymphocytes are termed
Simple peptides/glycoproteins; pleotropic; action radius usually transient, autocrine/paracrine, not endocrine; triggered by altered gene expression in target cells; bind to high affinity cell surface receptors; hematopoietic, immunomodulating...
The novel neuropeptides hypocretin and orexin, located recently on the lateral hypothalamic cells, has been linked to both feeding and sleeping/waking cycles. Recent studies have found an association between defects in hypocretin/orexin and narcolepsy.