Lab Exam IV Packet 10 Brain and Cranial Nerves - Biology...

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Biology 214Human Anatomy and Physiology ILab Assignment Packet #10Fall 2013, Lab Exam IVMichelle K. Kettler, Ph.D.Chapter 14: The Brain and Cranial NervesRemember that you will be identifying structures (Anatomy) for Lab Exam #4. The function of these structures(Physiology) will be discussed in Lecture for Lecture Exam #4. The only part below which is not “justidentification” is the section on the Meninges, etc.) and the “Deeper Insights”. The following is a list of thestructures that you need to know in the order in which they appear in your Saladin reading and pictures.Section 14.1: Overview of the Brain – page 512Subsection: Major Landmarks– Read entire subsection; Know the terms Rostral andCaudal; Find the following on theBrain Modelsat your desk.CerebrumCerebral HemispheresGyrus (plural = Gyri)Sulcus (plural = Sulci)Longitudinal FissureCorpus CallosumCerebellumTransverse Cerebral Fissure – be careful here, it is the indentation in between the Cerebrum andCerebellum (on the posterior of the Brain Model.Brainstem– Some people include the parts that arise from the embryonic Diencephalon as part of theBrainstem. We will use the definition in this class that the Brainstem is the entire brain except for theCerebrum and Cerebellum.Diencephalon-Do not use the term Diencephalon after birth, as it refers to a part of the brain found inembryos, instead use the terms for the parts that the Diencephalon becomes – Epithalamus, Thalamusand Hypothalamus. See below pages 5 and 6 for these. This is just a note to remind you not to use“Embryonic” anatomical terms after birth! They are gone. They have turned into something else!1
Subsection: Gray and White Matter (of the Cerebrum and Cerebellum)readentire subsectionCerebrumCerebralCortexis PEACH color onPlastic Brain Models at your deskANDalso look attheBrain& Meninges Modelwhere the Cerebral Cortex is BROWN (#16 is Gray matter…the Cerebral Cortex,the darker more superficial layer of the Cerebrum).Cerebral Medullais #17 is White Matter, so has abundant Myelin (from lecture). Remember fromlecture that the Cerebral Medulla consists of 3 basic types of Tracts (Commissural, Association andProjection Tracts). You will be finding some examples of these tracts in just a bit.CerebellumCerebellarCortexis BROWN part of Cerebellum onPlasticBrain Models at your deskand is GrayMatter (little myelin as compared to the White Matter).Arbor Vitae:the White Matter deep to the more superficial Cerebellar CortexCerebral Nuclei and Cerebellar NucleiYou will not see theCerebral NucleiorCerebellar Nucleion the plastic brain models. Learn them from thepictures. Also you will be able to see some of the Cerebral Nuclei on the real brain which is embedded inplastic. The Nuclei are Gray Matter buried deep inside of the White Matter of the Cerebrum and Cerebellum (asdiscussed in lecture).

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