5 Simple Techniques For human anatomy meaning
5 Simple Techniques For human anatomy meaning
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angiotensin II – protein produced by the enzymatic action of ACE on inactive angiotensin I; actively triggers vasoconstriction and stimulates aldosterone launch because of the adrenal cortex.
cuticle – in hair, the outermost layer of keratinocytes originating in the hair matrix, as noticed in a cross-portion in the hair bulb.
dense body – sarcoplasmic composition that attaches to your sarcolemma and shortens the muscle as thin filaments slide past thick filaments.
cleavage – kind of mitotic cell division by which the mobile divides but the overall volume remains unchanged; this method serves to make smaller sized and smaller sized cells.
amacrine mobile – form of cell while in the retina that connects to your bipolar cells close to the outer synaptic layer and gives The premise for early image processing in the retina.
cauda equina – bundle of spinal nerve roots that descend from the reduce spinal wire below the 1st lumbar vertebra and lie throughout the vertebral cavity; has the appearance of a horse’s tail.
atrioventricular (AV) node – clump of myocardial cells located in the inferior portion of the best atrium throughout the atrioventricular septum; gets the impulse from the SA node, pauses, after which transmits it into specialised conducting cells within check here the interventricular septum.
coronoid means of the ulna – projecting bony lip located over the anterior, proximal ulna; types the inferior margin of the trochlear notch.
The central nervous technique lies mostly within the axial skeleton, the brain staying perfectly safeguarded from the cranium along with the spinal wire with the vertebral column, via the bony neural arches (the arches of bone that encircle the spinal wire) as well as the intervening ligaments.
Dalton’s legislation – assertion in the theory that a selected fuel key in a mix exerts its very here own force, like that distinct fuel sort was not Portion of a combination of gases.
cranial nerve – amongst twelve nerves connected to the Mind which have been responsible for sensory or motor features of The pinnacle and neck.
cardiac reflexes – number of autonomic reflexes that empower the cardiovascular centres to manage heart operate dependent upon sensory details from a range of visceral sensors.
adrenal glands – endocrine glands Situated at the top of each kidney that are very important for your regulation of your tension response, blood pressure and blood quantity, h2o homeostasis, and electrolyte ranges.
basal mobile – type of stem cell found in the stratum basale and inside the hair matrix that continuously undergoes cell division, making the keratinocytes of your epidermis.