In biological morphology and anatomy, a sulcus (pl.: sulci) is a furrow or fissure (Latin fissura, pl.: fissurae). It may be a groove, natural division, deep furrow, elongated cleft, or tear in the surface of a limb or an organ, most notably on the surface of the brain , but also in the lungs , certain muscles (including the heart ), as well as ...

2023年10月30日 · A sulcus is a furrow or fissure usually specific to the surface of the brain, but also in bones and other organs. When referring to bones, sulci are very often referred to as grooves. Grooves often trace the length of nerves or vessels, providing space to prevent compression from surrounding muscles or external forces.

In neuroanatomy, a sulcus (Latin: "furrow"; pl.: sulci) is a shallow depression or groove in the cerebral cortex. One or more sulci surround a gyrus (pl. gyri), a ridge on the surface of the cortex, creating the characteristic folded appearance of the brain in humans and most other mammals. The larger sulci are also called fissures.

Table 7.2 describes the bone markings, which are illustrated in (Figure 7.2.1). There are three general classes of bone markings: (1) articulations, (2) projections, and (3) holes. As the name implies, an articulation is where two bone surfaces come together (articulus = “joint”).

2017年11月15日 · There are multiple different signs that can be used to locate the central sulcus on axial cross sections. Often times identifying structures around the central sulcus is also useful in contextualizing its anatomical location. These signs are discussed more in depth below.

Example: ramus of the mandible. sinus. A cavity within a bone. Example: sphenoidal sinus. sulcus. Same as groove. Example: intertubercle sulcus of the humerus. trochanter. A large prominence on the side of the bone. Some of the largest muscle groups and most dense connective tissues attach to the trochanter. Examples: greater and lesser ...

2023年10月30日 · The central sulcus, also known as the sulcus of Rolando, is one of the largest sulci present in the brain. It is located between the frontal and parietal lobes. Apart from being the boundary between the two lobes, it demarcates the primary motor cortex (precentral gyrus) and primary somatosensory cortex (postcentral gyrus).

其中，枕叶的前界为由顶枕沟（parieto-occipital sulcus）和枕前切迹（preoccipital notch，temporo-occipitalincisure）的“一线一点”确立的一个面，在大脑外表面和底面的投影分别为外侧顶颞线（lateral parietotemporal line）、底顶颞线（basal parietotemporal line）；颞顶叶的分 …

A sulcus (pronounced with a hard c) (pl. sulci) is a depression or fissure in the surface of an organ, especially the brain. See Sulcus (neuroanatomy) Template:WH. Template:WS.

2021年7月21日 · The groove between the convolutions on a mammalian cerebrum is called sulcus. Another structure referred to as sulcus is the longitudinal groove in Dinoflagellates where flagellum lies. The ventral siphonoglyph in anthozoa is also called..