[DOC] [TLE] Sulcus (neuroanatomy) - Wikipedia [PAR] In neuroanatomy, a sulcus (Latin: "furrow", pl. sulci) is a depression or groove in 
the cerebral cortex. It surrounds a gyrus (pl. gyri), creating the characteristic 
folded appearance of the brain in humans and other mammals. Contents. [hide]. 
1 Structure. 1.1 Importance of expanded surface area; 1.2 Variation ... Mammals 
that have smooth-surfaced or nonconvoluted brains are called... [DOC] [TLE] Home Page - The Hormone Shop.com [PAR] The gray matter covers an underlying mass of fibers called the white matter. ... 
known as gyri, separated by small grooves called sulci and larger grooves called 
fissures. Approximately two-thirds of the cortical surface is hidden in the folds of 
the ... These and other sulci and gyri divide the cerebrum into five lobes: the 
frontal,... [DOC] [TLE] Lateral View of the Brain - Anatomy | Kenhub [PAR] Sulci are small grooves; but there are also large grooves called fissures. ... The 
cortex is the most superficial layer of these brain parts, and make up the .... This 
operculum has a superior surface which is hidden in the depth of the lateral 
sulcus. ... Most of these authors have also worked out maps of the cerebral 
cortex... [DOC] [TLE] What is the purpose of convolutions in the brain? | Reference.com [PAR] The convolutions of the brain increase the surface area, or cortex, and allow ... 
Each convolution contains two folds called gyri and a groove between folds 
called a sulcus. ... A: Although most of the cells in the human body renew 
themselves... [DOC] [TLE] Thirteen [PAR] The large surface area of the human cerebral cortex results in a pat- CU tern of 
gyri and sulci. ... ing grooves are called sulci. About two- ... bottom of the lateral 
sulcus and is hidden from surface ... deep; its walls therefore constitute much of. [DOC] [TLE] Brain - Biology Encyclopedia - cells, body, function, human, system ... [PAR] The brain receives most of its input from, and sends most of it output to, the spinal 
cord, which ... from the cerebellum by a deep horizontal groove, the transverse 
fissure. ... As the cortex continues to grow, it is thrown into folds called gyri (
singular, gyrus), ... The insula is a fifth lobe of the cerebrum not visible from the 
surface. [DOC] [TLE] Anatomy of the Brain Part 1 - My-MS.org Home [PAR] A fissure or groove that separates the two hemispheres is called the great ... 
About 66 % of the surface of the brain is hidden in the fold of the sulci with the 
total ... Most sensory information is routed to the cerebral cortex via the thalamus. [DOC] [TLE] Calamo - Brain Structure [PAR] Approximately two-thirds of the cortical surface is hidden in the folds of the sulci. 
... These and other sulci and gyri divide the cerebrum into five lobes: the frontal, 
parietal, ... The outer layer, or cortex, of the cerebellum consists of fine folds 
called folia. ... It regulates or is involved directly in the control of many of the body 
s vital... [DOC] [TLE] Neuroanatomy and Functional Localization [PAR] Axons, also called nerve fibers, convey electrical signals away from the ... the 
neurotransmitters fit into specialized receptor sites much as a key fits into ... 
known as gyri, separated by small grooves called sulci and larger grooves called 
fissures. Approximately two-thirds of the cortical surface is hidden in the folds of 
the sulci. [DOC] [TLE] Cerebral gyri, gyri cerebri - Medical Dictionary - The Free Dictionary [PAR] annectent gyri various small folds on the cerebral surface that are too ... the 
central sulcus; the primary sensory area of the cerebral cortex; called also ... and 
a portion hidden from view in the wall and floor of the sulcus (q.v.). ... They are 
caused by infolding of the cortex and are separated by the shallow grooves (sulci
) or... [DOC] [TLE] Insular cortex | Radiology Reference Article | Radiopaedia.org [PAR] The insular cortex (abbrev. insula) lies deep to the lateral surface of the brain

Question: Much of the cortical surface of this is hidden in grooves called sulci
Answer: the brain