We are able to visualize‚ feel‚ smell‚ and hear the world around us due to a system called the sensory system. All around the surface of our body we have detectors that are known as receptors. These receptors‚ in the form of cells‚ are specialized to capture specific forms of energy- whether heat‚ light‚ chemical‚ or mechanical (1). The environmental cues that are detected by our receptors on the surface of our body are then transformed into electrical signals‚ or nerve impulses‚ that can be sent
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10/21/14 Nervous system: one of the eleven major body organ systems in animals; coordinates and controls actions of internal organs and body systems; receives and processes sensory information from external environment; coordinated short-term reactions to these stimuli. Cell body: the part that contains the nucleus and most of the cytoplasm and the organelles. Axon: sends messages away from the cell body to other neurons. Dendrite: short‚ highly branched fibers that carry signals toward the cell
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1. a. The action potential changes the membrane potential from -70 mV (resting) to +30 mV and back again to the resting membrane potential. b. This results from a change in membrane permeability first to Na then to K due to the opening of what type of ion channels? Voltage gated channels 2. a. Where is the density of voltage-gated Na+ channels the greatest? Axon hillock b. What areas of the neuron generate signals that open these voltage-gated channels? Dendrites and the cell body c. Opening
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Introduction: The cardiovascular system has multiple components that work to ensure an enough oxygen is supplied to the muscles‚ both at rest and during exercise. The objective of this laboratory session was to measure‚ and compare how the cardiovascular system responds to dynamic and isometric exercise. The research question for this lab was “What is the effect of different exercise modalities on the cardiovascular system?”. In response to this research question‚ the following hypothesis was formed
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An Overview of Anatomy LabPaq #1 SCIE- 335- DIS-SET01 An Overview of Anatomy Purpose: The purpose of this lab and exercise is to explain the meaning of the anatomical position‚ why it used and to describe the body regions. Safety concerns that need to be addressed are the use of a kitchen knife when cutting potatoes. When using the kitchen knife the area needs to be secure‚ no distractions should be near‚ safety goggles and gloves should be
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Nervous conditions NERVOUS CONDITIONS Tsitsi Dangarembga ←Context→ Tsitsi Dangarembga finished writing Nervous Conditions when she was in her mid-twenties and‚ upon its publication in 1988‚ won widespread critical acclaim for its complex and nuanced portrayal of the challenges that a young Shona girl faces in her efforts to break free of her impoverished background and acquire an education. “Shona” is the name given to various tribal groupings living mostly in the eastern half of Zimbabwe‚
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5: Renal... Premium Physioex Exercise 2 Lab And Review Sheet Activity 2 induces active force in the skeletal muscle? b. threshold voltage 6. Review Sheet Results 1. Describe the effect of increasing stimulus voltage on isolated... Premium Test Review Sheet Test#1 Review Sheet 1. Mesopotamia : located where Greece was by the Tiberius River 2. Sumerians 3. Sargon I : Asyrrian king‚ grandson of Tiglathpeliser III... Premium Review Sheet 32 Anatomy Of Blood Vessels fibular artery dorsalis
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Muscles and glands Neurons communicate with other neurons and stimulate both ___ and ___. Synapses‚ cell bodies‚ dendrites Signals from other neurons are received at junctions called ___‚ located primarily on the ___ ___and ___‚ the receptive and integrative regions of the neuron. Axon hillock‚ action potential The area where the axon emerges from the soma (cell body) is called the ___ ___. This is also where the outgoing signal‚ called a/an ___ ___ is generated. Collaterals‚ terminals
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Organization of Nervous Tissue Laszlo Vass‚ Ed.D. Version 42-0017-01-01 Lab RepoRt assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent
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NAME __Molly Manning__ LAB TIME/DATE ___10/24/13__ Exercise 2 Skeletal Muscle Physiology The Muscle Twitch and the Latent Period 1. Define the terms skeletal muscle fiber‚ motor unit‚ skeletal muscle twitch‚ electrical stimulus‚ and latent period. Skeletal muscle fiber-fibers attached to the skeleton that produce muscle tension. Motor unit-consists of the motor neuron and all of the muscle fibers. Skeletal muscle twitch-mechanical response to a single action potential. Electrical stimulus-muscle
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