BIO 11 Lecture Notes - Lecture 12: Occipital Lobe, Unimodality, Primary Motor Cortex
Document Summary
The cns develops from tissue that folds into the neural tube by the fourth week of development. The caudal end becomes the spinal cord and the cranial end enlarges to form the primary brain vesicles, which enlarge further to form the secondary brain vesicles. The shallow grooves are called sulci, and the deep grooves are called fissures. The two hemispheres are separated by the longitudinal fissure. Each hemisphere contains multiple sulci, and between the sulci are elevated ridges known as gyri. Gyri and sulci increase the surface area of the brain + make it compact. The cerebral hemispheres house right and left lateral ventricles. Each cerebral hemisphere has five lobes: the anterior frontal lobe, the middle parietal lobe, the posterior occipital lobe, the lateral temporal lobe, and the deep insula. Anterior to the central sulcus - precentral gyrus. Neurons of responsible for planning and executing movement and complex mental functions such as behavior, conscience, and personality.
