A Simple Key For human anatomy & physiology Unveiled
A Simple Key For human anatomy & physiology Unveiled
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angiotensin II – protein produced by the enzymatic action of ACE on inactive angiotensin I; actively brings about vasoconstriction and stimulates aldosterone release from the adrenal cortex.
binocular depth cues – indications of the distance of Visible stimuli on the basis of slight variations in the images projected on to possibly retina.
dense body – sarcoplasmic composition that attaches for the sarcolemma and shortens the muscle mass as skinny filaments slide past thick filaments.
angiotensinogen – inactive protein inside the circulation produced by the liver; precursor of angiotensin I; need to be modified with the enzymes renin and ACE being activated.
anterior cranial fossa – shallowest and most anterior cranial fossa of the cranial base that extends in the frontal bone on the lesser wing on the sphenoid bone.
clonal anergy – procedure whereby B cells that respond to soluble antigens in bone marrow are made non-functional.
atrioventricular (AV) node – clump of myocardial cells human anatomy and physiology definition located in the inferior part of the best atrium within the atrioventricular septum; receives the impulse through the SA node, pauses, after which you can read more transmits it into specialised conducting cells in the interventricular septum.
cornea – fibrous masking of the anterior region of the attention that is transparent in order that light can pass through it.
acute mountain sickness (AMS) – issue that happens a results of acute publicity to significant altitude due to a reduced partial strain of oxygen.
autonomic tone – contractile state for the duration of resting cardiac exercise produced by mild sympathetic and parasympathetic stimulation.
continual capillary – commonest kind of capillary, present in practically all tissues apart from epithelia and cartilage; incorporates quite small gaps within the endothelial lining that permit Trade.
arterial circle – (also, circle of Willis) anastomosis Situated at The bottom with the Mind that makes certain continual blood provide; formed from branches of the internal carotid and vertebral arteries; supplies blood into the Mind.
bulbus cordis – percentage of the primitive heart tube that may sooner or later build into the appropriate ventricle.
Bartholin’s glands – (also, bigger vestibular glands) glands that develop a thick mucus that maintains humidity from the vulva area; also often called the greater vestibular glands.