BIO 101 Lecture Notes - Lecture 25: Tetrapod, Umbilical Cord, Yolk Sac

• School: URI
• Department: Biological Sciences
• Course: BIO 101
• Professor: Van Sciver Barbara

Document Summary

All vertebrates are capable of learning-remembering events, adverse learning- necessary for survival. Right and left hemispheres-connected by neurons, crossing over occurs so right side of the brain controls the left side of the body. Outgrowth of the anterior end of the dorsal hallow nerve cord. Protections for the vertebrae brain and spinal cord. Meninges-found between the skull and the brain and they provide nourishment and physical protection for the brain. Cerebral spinal fluid-keeps the brain from squashing the neurons and vesicles- the brain is floating in the csf-shock absorber. Blood brain barrier- protects the sensitive neurons from chemical flection"s in the blood. Cells in capillaries are in tight junction-stuff in the lumen has to go through the cell which is regulated. 4 anatomical structures that appear in chordates, as they pertain to vertebrates: doral hollow nerve cord-spinal cord and brain, formed from ectoderm, electrical signals, pharyngeal pouches, throat region, become gill chambers and gills in aquatic species c.