anatomy definition of purkinje
The intrinsic rate of the bundle of His is 20 or less beats per minute. The bundle of His branches into the left and the right bundle branches, which run along the interventricular septum. The left bundle branch further divides into the left anterior and the left posterior fascicles. These bundles and fascicles give rise to thin filaments known as Purkinje fibers. ADH Antidiuretic hormone; a hormone produced by the hypothalamus and released by the posterior pituitary that acts on the kidneys to promote water reabsorption; also known as vasopressin. ADP Adenosine diphosphate; a molecule that together with inorganic phosphate is used to make ATP (adenosine triphosphate). Both basket and stellate cells (found in the cerebellar molecular layer) provide inhibitory (GABAergic) input to the Purkinje cell, with basket cells synapsing on the Purkinje cell axon initial segment and stellate cells onto the dendrites. It forms the anterior roots of the spinal nerves; also called an efferent neuron. motor unit A single motor neuron and the muscle fibers it innervates. mucosa (myoo-ko´sua) A mucous membrane that lines cavities and tracts opening to the exterior. mucous cell (myoo´kus) See goblet cell. | Purkinje fibre | Purkinje fibres. One of a group of fibers in the heart, consisting of specialized cardiomyocytes, that allow the heart's conduction system to create synchronized contractions of its ventricles and thus maintain a consistent rhythm. en​.wiktionary​.org​/wiki​/Purkinje fiber. C. calcitonin (kal´´su1-to´nin) Also called thyrocalcitonin. A polypeptide hormone produced by the parafollicular cells of the thyroid and secreted in response to hypercalcemia. It acts to lower blood calcium and phosphate concentrations and may serve as an antagonist of parathyroid hormones. Parallel fibers pass orthogonally through the Purkinje neuron's dendritic arbor, with up to 200,000 parallel fibers forming a Granule-cell-Purkinje-cell synapse with a single Purkinje cell. Purkinje cells are found within the Purkinje layer in the cerebellum. Purkinje cells are aligned like dominos stacked one in front of the other. Their large dendritic arbors form nearly two-dimensional layers through which parallel fibers from the deeper-layers pass. Purkinje cells, or Purkinje neurons (/pərˈkɪndʒiː/ pər-KIN-jee), are a class of GABAergic neurons located in the cerebellum. They are named after their discoverer, Czech anatomist Jan Evangelista Purkyně (. [ˈpurkɪɲɛ]). frenulum (fren´yuu-lum) A membranous structure that serves to anchor and limit the movement of a body part. frontal 1.Pertaining to the region of the forehead. 2. A plane through the body, dividing the body into anterior and posterior portions; also called the coronal plane. FSH Follicle-stimulating hormone; one of the two gonadotropic hormones secreted from the anterior pituitary.
A class of GABAergic neurons located in the cerebellum.