lateral hearts — see commissural vessels … Dictionary of invertebrate zoology
pseudoheart — n. [Gr. pseudos, false; A.S. heorte, heart] 1. (ANNELIDA) see commissural vessels. 2. (ECHINODERMATA) The axial gland … Dictionary of invertebrate zoology
nervous system, human — ▪ anatomy Introduction system that conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body. As with other higher vertebrates, the human nervous system has two main… … Universalium
Cell — The basic structural and functional unit in people and all living things. Each cell is a small container of chemicals and water wrapped in a membrane. Each cell in the human body there are 100 trillion cells in each of us contains the entire… … Medical dictionary
Netrin — 1 knockout disrupts thalamocortical projections topography. From Powell et al., 2008.[1] Netrins are a class of proteins involved in axon guidance. They are named after the Sanskrit word netr , which means one who guide … Wikipedia
branch — An offshoot; in anatomy, one of the primary divisions of a nerve or blood vessel. A b.. See ramus, artery, nerve, vein. SYN: ramus (1) [TA]. accessory meningeal b. SYN: pterygomeningeal artery … Medical dictionary
Microglia — Code TH H2.00.06.2.00004 Microglia are a type of glial cell that are the resident macrophages of the brain and spinal cord, and thus act as the first and main form of active immune defense in the central nervous system (CNS). Microglia constitute … Wikipedia
Artery — A vessel that carries blood that is high in oxygen content away from the heart to the farthest reaches of the body. Since blood in arteries is usually full of oxygen, the hemoglobin in the red blood cells is oxygenated. The resultant form of… … Medical dictionary
Nervous system — Nerve redirects here. For other uses, see Nerve (disambiguation). This article is about the nervous system. For parts of the nervous system commonly called nerves, see Peripheral nerve. Nervous system The Human N … Wikipedia
lateral commissures — 1. (ANNELIDA) Commissural blood vessels. Paired segmental lateral blood vessels from the dorsal vessel to anteriorly join the ventral vessel and more posteriorly, the sub neural vessel; when contractile, they are called lateral hearts or… … Dictionary of invertebrate zoology