calcarine sulcus

Examples of calcarine sulcus in the following topics:

• Sensory Areas

  • The primary somatosensory cortex, located across the central sulcus and behind the primary motor cortex, is configured to generally correspond with the arrangement of nearby motor cells related to specific body parts.
  • The visual area is located on the calcarine sulcus deep within the inside folds of the occipital lobe.

• Development of Vision

  • Development of the optic vesicles starts in the three week embryo from a progressively deepening groove in the neural plate called the optic sulcus.
  • As this expands, the rostral neuropore (the exit of the brain cavity out of the embryo) closes and the optic sulcus and the neural plate becomes the optic vesicle.

• Cerebral Cortex

  • One notable sulcus is the central sulcus, or the wrinkle dividing the parietal lobe from the frontal lobe.

• Humerus (The Upper Arm)

  • Between the two tubercles lies a deep grove called the intertubercular sulcus, through which the tendon of the long head of the biceps brachii runs.

• Hypoglossal (XII) Nerve

  • The hypoglossal nerve emerges from the medulla oblongata in the preolivary sulcus where it separates the olive (olivary body) and the pyramid (medullary pyramid).

• 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).
  • The cortex is composed of two hemispheres, right and left, which are separated by a large sulcus.

• Introduction to Sensation

  • The toes are represented at the top of the cerebral hemisphere, while the mouth is represented at the bottom of the hemisphere, closer to the part of the brain known as the lateral sulcus.
  • These representations lie along a fold in the cortex called the central sulcus.

• The Brain

  • Anatomists call each cortical fold a sulcus and the smooth area between folds a gyrus.
  • The only exception is the border between the frontal and parietal lobes, which is shifted backward from the corresponding suture to the central sulcus.

• Cerebral Lobes

  • It is separated from the parietal lobe by a space between tissues called the central sulcus and from the temporal lobe by a deep fold called the lateral (Sylvian) sulcus.

• Spinal Cord Grey Matter and Spinal Roots

  • The posterior median sulcus is the groove in the dorsal side, and the anterior median fissure is the groove in the ventral side.