The adult human skeleton usually contains 206 named bones. These bones could be grouped in two divisions: axial skeleton and appendicular skeleton.
amino acid – a protein’s monomer; features a central carbon or alpha carbon to which an amino team, a carboxyl team, a hydrogen, and an R team or facet chain is hooked up; the R group differs for all twenty typical amino acids.
dense body – sarcoplasmic construction that attaches for the sarcolemma and shortens the muscle mass as thin filaments slide previous thick filaments.
costal cartilage – hyaline cartilage composition connected for the anterior conclude of each rib that provides for both immediate or oblique attachment of most ribs towards the sternum.
aorta – most significant artery within the body, originating from your remaining ventricle and descending for the abdominal area where by it bifurcates to the widespread iliac arteries at the level with the fourth lumbar vertebra; arteries originating check here within the aorta distribute blood to almost all tissues from the body.
arachnoid granulation – out-pocket from the arachnoid membrane in the dural sinuses that permits for reabsorption of CSF into the blood.
costal groove – shallow groove alongside the inferior margin of a rib that gives passage for blood vessels and also a nerve.
defensins – antimicrobial proteins released from neutrophils and macrophages that build openings in the plasma membranes to eliminate cells.
aortic sinuses – tiny pockets inside the ascending aorta near the aortic valve which are the places from the baroreceptors (stretch receptors) and chemoreceptors that result in a reflex that aids during the regulation of vascular homeostasis.
apical ectodermal ridge – enlarged ridge of ectoderm at the distal end check here of a limb bud that stimulates advancement and elongation on the limb.
colloid – viscous fluid within the central cavity of thyroid follicles, that contains the glycoprotein thyroglobulin.
cytokines – course of proteins that work as autocrine or paracrine signalling molecules; in the cardiovascular program, they encourage the proliferation of progenitor cells and assistance to stimulate equally nonspecific and specific resistance to illness.
This short article is worried mostly While using the gross construction and the functionality in the skeleton of the conventional human adult.
anterior longitudinal ligament – ligament that runs the length of the vertebral column, uniting the anterior elements of the vertebral bodies.