PSYB21H3 Chapter Notes - Chapter 2: Korbinian Brodmann, Hindbrain, Posterior Cerebral Artery
Document Summary
Chapter 2: the anatomy and evolution of the nervous system. Structures that are located toward the head end of the animal are rostral or anterior. Structures located toward the tail end of the animal are caudal or posterior. Structures located toward the belly side are inferior or ventral and structures toward the back are superior or dorsal. Anatomical directions are different in people because our two legged stance puts a 90 degree bend in the neuraxis which is an imaginary line that runs the length of the spinal cord to the front of the brain. In a four legged animal, the neuraxis forms a straight line running parallel to the ground, in humans the dorsal parts of our brain form a 90 degree angle with the dorsal parts of the spinal cord. The midline is an imaginary line that divides us into equal halves. If two structures are ipsalateral, they are both on the same side of the midline.
