cholinergic method – neurotransmitter technique of acetylcholine, which incorporates its receptors plus the enzyme acetylcholinesterase.
amino acid – a protein’s monomer; includes a central carbon or alpha carbon to which an amino team, a carboxyl group, a hydrogen, and an R group or aspect chain is connected; the R team is different for all twenty popular amino acids.
dense body – sarcoplasmic composition that attaches into the sarcolemma and shortens the muscle mass as slim filaments slide earlier thick filaments.
cervical enlargement – location on the ventral (anterior) horn on the spinal twine that has a more substantial population of motor neurons for the increased quantity of and finer Charge of muscles on the higher limb.
Encyclopaedia Britannica's editors oversee subject matter parts wherein they may have extensive information, whether or not from many years of practical experience gained by focusing on that content or via study for a sophisticated diploma. They publish new articles and confirm and edit information obtained from contributors.
cauda equina – bundle of spinal nerve roots that descend from your lessen spinal twine below the initial lumbar vertebra and lie inside the vertebral cavity; has the appearance of the horse’s tail.
choroid plexus – specialised framework containing ependymal cells that line blood capillaries and filter blood to generate CSF while in the 4 ventricles of the brain.
cortex – in hair, the 2nd or middle layer of keratinocytes originating with the hair matrix, as observed inside of a cross-area of your hair bulb.
antidiuretic hormone (ADH) – hypothalamic hormone which is saved from the posterior pituitary Which alerts the kidneys to reabsorb drinking water.
autorhythmicity – means of cardiac muscle to initiate its possess electrical impulse that triggers the mechanical contraction that pumps blood at a fixed speed devoid of anxious or endocrine Command.
activation gate – Portion of the voltage-gated Na+ channel that opens when the membrane voltage reaches threshold.
anaphylactic shock – sort of shock that follows a significant allergic response and results from huge vasodilation.
blood-Mind barrier (BBB) – physiological barrier among the circulatory process plus the central nervous technique that establishes a here privileged blood supply, limiting the move of substances in to the CNS.
brain circumstance – part of the skull which contains and here shields the brain, consisting in the eight bones that variety the cranial base and rounded higher cranium.