ANSC 3080 Lecture Notes - Lecture 3: Pineal Gland, Epithalamus, Anterior Pituitary

• School: University of Guelph
• Department: Animal Science
• Course: ANSC 3080
• Professor: Gregoy Bedecarrats

Document Summary

Ii: functional anatomy of the brain and spinal cord (cns) Describe the primary structure of the brain and spinal cord. Understand the structure/function of the central nervous system. Organization of the cns: brain, cerebrum (forebrain, diencephalon (thalamus, hypothalamus, cerebellum, mesencephalon, pons, medulla oblongata (brain stem, spinal cord. Meninges: 3 layers surrounding the brain and spinal cord, outer meninx=dura mater (thick, tough, supports the brain. Inserted between cerebral hemispheres: forms the venous sinus, collects most of the blood from the brain, middle meninx=arachnoid, between arachnoid and pia mater is the sub-arachnoid space (filled with cerebrospinal. Inner meninx=pia mater, tightly attached to the neutral tissue fluid) Cerebrospinal fluid (csf): formed by capillaries of specialized areas of the pia mater called choroid plexus. Ionic concentration ideal for optimum neural function: blood-csf barrier: at choroid plexus, uptake of nutrients and drugs into csf. Blood-brain barrier: no cellsor proteins, low amino acids, only liposoluble substances (such as gases) can diffuse.