Operculum (brain)

Operculum (brain)
Brain: Operculum (brain)
Operculum.png
Operculum
Gray731.png
The insula of the left side, exposed by removing the opercula.
Latin operculum frontale, operculum parietale, operculum temporale
Gray's subject #189 825

Operculum, derived from Latin, meaning "little lid", refers to the cerebral cortex on the outside surface of the brain bordering the lateral sulcus, and the roof and floor of the lateral sulcus. (The back wall of the lateral sulcus is the insula.) Neuroscience divides the operculum into orbital, frontal, parietal and temporal regions, after the lobes they form a part of.

v · d · eHuman brain: forebrain (cerebrum · cerebral cortex · cerebral hemispheres, grey matter) (TA A14.1.09.002–240, 301–320, GA 9.818–826)
Frontal lobe
Superolateral
Precentral
Precentral gyrus · Precentral sulcus
Medial/inferior
Precentral
Paracentral lobule (4) · Paracentral sulcus
Both
Parietal lobe
Superolateral
Medial/inferior
Both
Postcentral gyrus/primary somatosensory cortex (1 · 2 · 3) · Secondary somatosensory cortex (5) · Posterior parietal cortex (7)
Occipital lobe
Superolateral
Occipital pole of cerebrum · Lateral occipital gyrus (18, 19) · Lunate sulcus · Transverse occipital sulcus
Medial/inferior
Temporal lobe
Superolateral

Transverse temporal gyrus/Primary auditory cortex (41, 42) · Superior temporal gyrus (38, 22/Wernicke's area) · Middle temporal gyrus (21) · Inferior temporal gyrus (20)

Superior temporal sulcus · Inferior temporal sulcus
Medial/inferior

Fusiform gyrus (37) Medial temporal lobe (27 · 28 · 34 · 35 · 36)

Inferior temporal sulcus
Interlobar
sulci/fissures
Superolateral
Medial/inferior
Limbic lobe
anterior (Entorhinal cortex, Perirhinal cortex) · Posterior parahippocampal gyrus · Prepyriform area

Subgenual area (25) · Anterior cingulate (24, 32, 33) · Posterior cingulate (23, 31)

Isthmus of cingulate gyrus: Retrosplenial cortex (26, 29, 30)
Hippocampal formation
Hippocampal sulcus · Fimbria of hippocampus · Dentate gyrus · Rhinal sulcus
Other
Insular lobe
Long gyrus of insula · Short gyri of insula · Circular sulcus of insula
General
Some categorizations are approximations, and some Brodmann areas span gyri.

M: CNS

anat(n/s/m/p/4/e/b/d/c/a/f/l/g)/phys/devp

noco(m/d/e/h/v/s)/cong/tumr, sysi/epon, injr

proc, drug(N1A/2AB/C/3/4/7A/B/C/D)
v · d · eHuman systems and organs
TA 2–4:
MS
Bone (Carpus · Collar bone (clavicle) · Thigh bone (femur) · Fibula · Humerus · Mandible · Metacarpus · Metatarsus · Ossicles · Patella · Phalanges · Radius · Skull (cranium) · Tarsus · Tibia · Ulna · Rib · Vertebra · Pelvis · Sternum) · Cartilage
TA 5–11:
splanchnic/
viscus
mostly
Thoracic
TA 12–16
peripheral (Artery, Vein, Lymphatic vessel) · Heart
primary (Bone marrow, Thymus) · secondary (Spleen, Lymph node)
Blood
(Non-TA)
General anatomy: systems and organs, regional anatomy, planes and lines, superficial axial anatomy, superficial anatomy of limbs



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