BIO 201 – HUMAN ANATOMY AND PHYSIOLOGY I CHAPTER 13: THE BRAIN AND CRANIAL NERVES- CLASS LECTURE NOTES VISUAL A & P‚MARTINI SECTION 1: FUNCTIONAL ANATOMY OF BRAIN AND CRANIAL NERVES INTRODUCTION: Brain characteristics A. Equals ~97% of body’s neural tissue in adults B. “Typical” brain 1. Weighs 1.4 kg (3 lb) 2. Volume of 1200 mL (71 in.3) C. Size varies among individuals 1. Male brains are ~10% larger than female (related to body size) 2. No correlation between
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adults Ventral Body cavity – contains thoracic and abdominopelvic organs. Eleven Major Body Systems -Integumentary – protections from environment‚ and temperature control -Skeletal -support‚ protection of soft tissues; mineral storage‚ blood formation -Muscular – locomotion‚ support‚ heat production -Nervous – directing immediate response to stimuli‚ by coordinating other systems. -Endocrine – directing long term changes in the activities of other organ systems. -Cardiovascular - internal
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submission purposes (misspelled): Dialated Veins Sclerptherapy Reticular veins are also referred to as ‘blue veins’ or ‘feeder veins.’ This condition occurs when dilated veins allow the outgoing blood to flow the opposite direction (backward). This increase in the pressure causes the veins to become enlarged. They can also twist and cause green or blue lines beneath the skin‚ which often creates an unsightly marbling effect. Reticular Veins: What You Need to Know The Cause Approximately 80 percent
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Unit 4 Lecture Study Guide Use the lecture folder to help you complete this guide. The more detail you can provide the better prepared for the test you will be. 1. What is the integumentary system and its primary characteristics? The integumentary system is the skin and its derivatives; it provides external protection for the body. Its characteristics are: covers the entire body‚ accounts for about 7% of total body weight‚ pliable‚ yet durable‚ thickness: 1.5 to 4.0 mm‚ composed of the epidermis
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structure’s function(s). (E.g. Temporal Lobe: Includes auditory areas that receive auditory information primarily from the opposite ear) Brain Structures to be represented: Older Brain Structures: Brainstem: Medulla Pons Thalamus* Reticular Formation* Spinal Cord Cerebellum* Limbic System: Hypothalamus* Pituitary Gland* Amygdala* Hippocampus* Cerebral Cortex Frontal Lobes: Broca’s Area
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for the formation of bones and teeth. E) Vitamin D is important for calcium homeostasis. Answer: b Level: 2 61. Eskimos wear a great deal of clothing and have limited exposure to U.V. light‚ but do not suffer from vitamin D deficiency. A possible explanation is A) they do not need vitamin D. B) their exposure to U.V. light in the summer will last for a year. C) they get enough vitamin D in their diet of fish and marine mammals. D) they do not require sunlight for vitamin D formation. E)
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Structures of the Nervous System This activity will increase your understanding of the different structures of the nervous system and brain. During the Web activity‚ you will view a variety of structures of the brain and nervous system and label each with the appropriate term. You will use this document to write a description for the terms you used in the activity. As you conduct the Structures of the Nervous System activity‚ follow along with this Word document and fill in the descriptions of
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Chapter 4 Tissue: The Living Fabric 4.1 What are tissues? * Groups of cells that are similar in structure and perform a common or related function * There are four basic types of tissues: 1) Epithelial (covering) 2) Connective (support) 3) Muscle (movement) 4) Nervous (communication and control) * The study of tissues is known as histology 4.2 Preparing Human Tissue for Microscopy Requirements * Specimen must be fixed (preserved) * Specimen must be
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with the hypothalamus to ensure homeostasis is maintained. It also helps in maintaining the upright position of our body. All these functions of medulla is possible with the help of cranial nerves. The medulla houses a portion of the reticular formation. Reticular formation is a set of interconnected nuclei that are located throughout the brainstem. The respiratory centre in
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also participates in visceral functions * The midbrain contains centers for the receipt and integration of several types of sensory information * A diffuse network of neurons called the reticular formation is present in the core of the brainstem * A part of the reticular formation‚ the reticular activating system (RAS) regulates sleep and
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