The Single Best Strategy To Use For human anatomy and physiology definition
The Single Best Strategy To Use For human anatomy and physiology definition
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circle of Willis – (also, arterial circle) anastomosis Situated at The bottom in the brain that makes sure continual blood offer; formed from branches of The interior carotid and vertebral arteries; provides blood to your Mind.
cuticle – in hair, the outermost layer of keratinocytes originating from the hair matrix, as noticed in a very cross-section on the hair bulb.
mobile – smallest independently working device of all organisms; in animals, a mobile contains cytoplasm, made up of fluid and organelles.
motion opportunity – transform in voltage of a mobile membrane in reaction to the stimulus that ends in transmission of the electrical signal; unique to neurons and muscle mass fibres.
articular tubercle – sleek ridge Found within the inferior skull, instantly anterior on the mandibular fossa.
contralateral – term meaning “on the other aspect,” as in axons that cross the midline inside of a fibre tract.
atrioventricular (AV) node – clump of myocardial cells situated in the inferior percentage of the correct atrium in the atrioventricular septum; gets the impulse from the SA node, pauses, and afterwards transmits it into specialised conducting cells throughout the interventricular septum.
cytoskeleton – “skeleton” of the mobile; fashioned by rod-like proteins that support the mobile’s condition and supply, amongst other features, locomotive capabilities.
carotid sinuses – tiny pockets near the foundation of The inner carotid arteries which can be the destinations of the baroreceptors and chemoreceptors that induce a reflex that aids during the regulation of check here vascular homeostasis.
antigen presentation – binding of processed antigen to the protein-binding cleft of a major histocompatibility complicated molecule.
corticospinal tract – relationship between the cortex along with the spinal wire answerable for building motion.
absorption – passage of digested merchandise from your intestinal lumen via mucosal cells and into your bloodstream or lacteals.
bulbus cordis – percentage of the primitive heart tube that check here can eventually acquire into the correct ventricle.
corona radiata – in an oocyte, a layer of granulosa cells that surrounds the oocyte Which have to be penetrated by sperm just before fertilisation can happen.