Weegy: Outermost meninx covering the brain composed of tough fibrous ... are the pia mater and the arachnoid ... [ of tough fibrous connective tissue? dura mater ] User: The spinal cord in the adult, ends A) at the sacrum B) between the thoracic vertebrae 11 and 12 C) between lumbar vertebrae 1 and 2 D) at lumbar vertebra 5 Weegy: ... thus there are 12 thoracic, 5 lumbar, 5 sacral, and 1 ... the spinal cord, which ends in the lumbar ... [ IVF between C7 and T1 vertebra) 12 thoracic ... ] User: The hemispheres of the cerebrum are connected by fibers called the A) corpus callosum B) falx cerebri C) tissue of Rolando D) tentorium Weegy: The hemispheres of the cerebrum are connected by fibers called the corpus callosum. (More)

Weegy: dopamine n. A monoamine neurotransmitter formed in the brain by the decarboxylation of dopa ... which is usually first diagnosed ... [ ^ a b c d e f Arias ... ] User: When impulses from various sources have an additive effect on a neuron in the process is called A) facilitation B) divergence C) convergence D) autonomic switching Weegy: When impulses from various sources have an additive effect on a neuron in the process is called C) CONVERGENCE. (More)