Background Information Muscles in the human body can be classified into three different types- cardiac‚ smooth and skeletal muscles. The skeletal muscles are the muscles that can be controlled voluntarily‚ in things such walking and picking things up. The skeletal muscles are made up of bundles of muscle fibres (which are also known as myofibrils‚ as can be seen below). Each of the muscle fibres contain many sarcomeres‚ which is the most basic form of striated muscle tissue- they consist of two
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Exercise Electrocardiogram Lab Purpose The purpose of this lab is to understand the concepts of an electrocardiogram of a normal person as well as understand what a normal ECG and an exercise ECG look like when performing a Bruce protocol treadmill test. Methods Materials- Test subject‚ ECG-12lead‚ 10 electrodes‚ treadmill The subject must have the electrodes properly connected before starting the treadmill test. Remove any hair from the subject before placing the electrodes on. The
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Topic 1 - Muscular System: Anatomy Review: Skeletal Muscle Tissue 1. Fill in the characteristics of the three muscle types: Muscle Type Cardiac Skeletal Smooth Shape of cell Branching Long‚ cylindrical Elongated # of nuclei Uninucleate Multinucleate Uninucleate Striations Yes Yes No Control Involuntary Voluntary Involuntary 2. What attaches muscles to bone? Tendons. 3. The whole muscle is composed of muscle cells (fibers) grouped in bundles called fascicles. 4. Name the connective
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Assignment 6: Exercise and Cardiopulmonary Physiology Lab Report by from tables submitted by and and lab partners and Biology 112‚ Section original graph submitted April 2‚ 2013 Abstract: The effect of exercise/physical activity on pulse‚ blood pressure‚ and respiration rate was tested on biology students. The results of the experiment showed that each of these parameters is affected after engaging in 2 minutes of physical activity. We found that average pulse‚ mean arterial pressure
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The muscular system has three types of muscle: skeletal‚ smooth‚ and cardiac. However‚ the main focus will be on the skeletal muscles and how they contract‚ as well as fatigue and respond to changes in temperature. In terms of the anatomy of the skeletal muscle‚ it is connected to bones by tendons‚ enabling movement. The muscle has layers around its main body: the fascia and the epimysium. A muscle is made up of many fascicles‚ bundles of myofibers (muscle cell) surrounded by perimysium. Each myofibers
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Muscle Test #1 Study Guide 1. What are the primary functions of muscles? What are skeletal muscles made of? Five Skeletal Muscle Functions 1.Produce movement of the skeleton •By pulling on tendons that then move bones 2.Maintain posture and body position 3.Support soft tissues •With the muscles of the abdominal wall and the pelvic floor 4.Guard entrances and exits •In the form of sphincters 5.Maintain body temperature •When contraction occurs‚ energy is used and converted to heat
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muscle contraction Introduction For a skeletal muscle fiber to contract‚ a stimulus must be applied to it. The stimulus is delivered by a nerve cell‚ or neuron. A neuron has a threadlike process called and axon that my run 91 cm or more to a muscle. A bundle of such fibers from man different neurons composes a nerve. A neuron that stimulates muscle tissue is called a motor neuron. The motor neuron branches into terminal structures called telodendria that come into close approximation with
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Question 1: Make a prediction about the basal metabolic rate (BMR) of the remaining rats compared with the BMR of the normal rat you just measured. Your answer : c. The BMR of both remaining rats will be lower than the normal rat’s BMR. Predict Question 2: What do you think will happen after you inject thyroxine into the three rats? Your answer : a. The normal rat will become hyperthyroidic and develop a goiter. Predict Question 3: What do you think will happen after you inject TSH into the three rats
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Please provide an example of Homeostasis and Negative Feedback in our environment. Be sure not to duplicate a classmates’ answer. 2. Identify some genetically engineered products currently available. Homeostasis is a point of balance or internal equilibrium. All kinds of systems — both living and non-living — can work to keep themselves in this state of balance‚ but the word "homeostasis" is most often used in biology‚ particularly to describe how the human body reacts to changes and keeps
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Lab 9 Report: Exercise Physiology Introduction When the human body is put to work and undergoes any sort of activity‚ it requires more energy and resources in order to sustain this. The cells in muscles and organs must work faster‚ and thus require more energy to do so. The body compensates by increasing heart rate and respiration in order to increase the amount of oxygen entering‚ carbon dioxide leaving‚ and rate at which these gases are delivered to cells throughout the body. In this lab‚ we
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