A Simple Key For human anatomy & physiology Unveiled
A Simple Key For human anatomy & physiology Unveiled
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cardiac skeleton – (also, skeleton from the heart) strengthened connective tissue Situated in the atrioventricular septum; includes 4 rings that encompass the openings in between the atria and ventricles, as well as the openings into the pulmonary trunk and aorta; the point of attachment for your heart valves.
annular ligament – intrinsic ligament from the elbow articular capsule that surrounds and supports The pinnacle in the radius at the proximal radioulnar joint.
Reviewed in the following paragraphs as Portion of the axial skeleton is a third subdivision, the visceral, comprising the reduced jaw, some elements in the upper jaw, as well as branchial arches, such as the hyoid bone.
cleavage furrow – contractile ring that kinds all-around a mobile during cytokinesis that pinches the mobile into two halves.
cervical vertebrae – seven vertebrae numbered as C1–C7 that are located in the neck area of the vertebral column.
cuboid – tarsal bone that articulates posteriorly With all the calcaneus bone, medially With all the lateral cuneiform bone, and anteriorly With all the fourth and check here fifth metatarsal bones.
calcitonin – peptide hormone made and secreted from the parafollicular cells (C cells) from the thyroid gland that features to reduce blood calcium amounts.
defensins – antimicrobial proteins released from neutrophils and macrophages that build openings inside the plasma membranes to eliminate cells.
Cells, such as, Have a very mobile membrane (also known as the plasma membrane) that retains the intracellular surroundings—the fluids and organelles—different from the extracellular natural environment. Blood vessels hold blood inside of a shut circulatory procedure, and nerves and muscles are wrapped in connective tissue sheaths that separate them from surrounding structures.
apical ectodermal ridge – enlarged ridge of ectoderm in the distal conclude of a limb bud that stimulates development and elongation of your limb.
biological macromolecule – large molecule necessary for here life that's constructed from smaller sized organic molecules.
cytokines – class of proteins that work as autocrine or paracrine signalling molecules; inside the cardiovascular procedure, they stimulate the proliferation of progenitor cells and support to encourage each nonspecific and unique resistance to condition.
alkaloid – compound, ordinarily from the plant source, that's chemically basic with regard to pH and can stimulate bitter receptors.
cytokinesis – remaining phase in cell division, exactly where the cytoplasm divides to type two separate daughter cells.