gyri

Examples of gyri in the following topics:

• Cerebral Cortex

  • The "valleys" of the wrinkles are called sulci (or sometimes, fissures); the "peaks" between wrinkles are called gyri.
  • While there are variations from person to person in their sulci and gyri, the brain has been studied enough to identify patterns.
  • As depicted in this diagram of brain structures, sulci are the "valleys" and gyri are the "peaks" in the folds of the brain.

• Sensory Areas

  • The primary auditory cortex is located on the transverse gyri that lie on the back of the superior temporal convolution of the temporal lobes.

• Body Cavity Membranes

  • It is the meningeal envelope which firmly adheres to the surface of the brain and spinal cord, following the brain's minor contours (gyri and sulci).

• Meninges

  • It is the meningeal envelope that firmly adheres to the surface of the brain and spinal cord, following the brain's minor contours (gyri and sulci).

• Brain: Cerebral Cortex and Brain Lobes

  • The outermost part of the brain is a thick piece of nervous system tissue called the cerebral cortex, which is folded into hills called gyri (singular: gyrus) and valleys called sulci (singular: sulcus).

• Overview of the Cerebrum

  • In larger mammals, the cerebral cortex is folded into many gyri and sulci, which allows it to expand in surface area without taking up much greater volume.

• White Matter of the Cerebrum

  • Long association fibers connect different lobes of a hemisphere to each other, whereas short association fibers connect different gyri within a single lobe.

• Cerebral Lobes

  • At the front edge of the occipital there are several lateral occipital gyri separated by lateral occipital sulci.

• Mapping the Primary Somatosensory Area

  • These are then transmitted from the gyri to the brain stem and spinal cord via corresponding sensory or motor nerves.