5 Simple Techniques For human anatomy and physiology definition
5 Simple Techniques For human anatomy and physiology definition
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The adult human skeleton usually consists of 206 named bones. These bones could be grouped in two divisions: axial skeleton and appendicular skeleton.
circulatory shock – also just named shock; a daily life-threatening health care affliction through which the circulatory technique is unable to produce ample blood stream to deliver enough oxygen and various nutrients to your tissues to take care of mobile metabolism.
dense body – sarcoplasmic construction that attaches towards the sarcolemma and shortens the muscle mass as slender filaments slide previous thick filaments.
central canal – longitudinal channel in the centre of each and every osteon; consists of blood vessels, nerves, and lymphatic vessels; also known as the Haversian canal.
amacrine cell – type of mobile in the retina that connects to the bipolar cells close to the outer synaptic layer and supplies the basis for early impression processing inside the retina.
Metabolism Anabolic reactions are building reactions, and so they consume Vitality. Catabolic reactions split elements down and launch Electrical power. Metabolism incorporates both of those anabolic and catabolic reactions.
atrioventricular (AV) node – clump of myocardial cells situated in the inferior portion of the best atrium in the atrioventricular septum; gets the impulse from your SA node, pauses, after which you can transmits it into specialised conducting cells in the interventricular septum.
aponeurosis – broad, tendon-like sheet of connective tissue that attaches a skeletal muscle to another skeletal muscle or to a bone.
The central anxious program lies mostly throughout the axial skeleton, the brain staying well secured through the cranium as well as spinal twine through the vertebral column, by way of the bony neural arches (the arches of click here bone that encircle the spinal twine) along with the intervening ligaments.
Dalton’s legislation – assertion on the basic principle that a certain fuel key in a combination exerts its possess force, as if that distinct gas form wasn't Element of a combination of gases.
adrenal cortex – outer location in the adrenal glands consisting of many layers of epithelial cells and human anatomy diagram capillary networks that makes mineralocorticoids and glucocorticoids.
cardiac reflexes – number of autonomic reflexes that help the cardiovascular centres to manage heart function based on sensory info from various visceral sensors.
Of those features, help is considered the most primitive as well as the oldest; Similarly, the axial Portion of the skeleton was the primary to evolve. The vertebral column, akin to the notochord in reduced organisms, is the principle guidance of the trunk.
azygos vein – originates in the lumbar location and passes through the diaphragm to the thoracic cavity on the appropriate aspect on the vertebral column; drains blood within the intercostal veins, oesophageal veins, bronchial veins, as well as other veins draining the mediastinal region; results in the excellent vena cava.