anatomy and physiology lab 1. What are some differences between Judy and Mariah that might make Judy more "at risk" for skin? cancer than Mariah?Judy had a pasty white skin. Therefore‚ her skin had less melanin than Mariah who had black hair and more melanin and are more protected against the uv rays of sun. 2. What observations did Judy make concerning her mole? Her mole changed shaped and turned bigger and its side were jagged. The middle was purplish-black and its edge were darker than
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ions during contraction of a skeletal muscle? Calcium is an important element for live. Calcium is found in the bones of animals and humans. In muscle contraction is produce as a result of Calcium ions ‚ Ca2+‚ It comes from rapid release from the cisternae of the sarcoplasmic reticulum which cause a chemical reaction between ATP and the myofilaments. Another important function of Calcium ions occurs during the state of resting muscle. During the state of resting muscle‚ calcium Ion is “maintaining
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M14_MARI6128_10_SE_CH14.QXD 1/19/11 5:58 PM Page 193 NAME_________________________________ LAB TIME/DATE ________________________ EXERCISE R E V I E W S H E E T 14 Key: a. b. endomysium epimysium fascicle fiber myofibril myofilament perimysium sarcolemma sarcomere sarcoplasm tendon Microscopic Anatomy and Organization of Skeletal Muscle Skeletal Muscle Cells and Their Packaging into Muscles 1. Use the items in the key to correctly identify the structures described below. G C
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Lab 6 Biomechanics of Frog Skeletal Muscle I. Purpose This exercise is designed to demonstrate some mechanical and physiological properties of skeletal muscle using the gastrocnemius muscle of a frog. II. Performance Objectives At the end of this exercise the student should be able to: 1. Define minimal (threshold)‚ subminimal‚ maximal‚ and supramaximal stimulus. 2. Explain what is meant by a “graded” response. 3. Draw a diagram of the setup used in this lab exercise. 4. Calculate the
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Performance Physiology of Exercise: KINE 3315- 003 Natasha Hernandez February 21 2013 Dr. Judy R. Wilson Chapter 1 Introduction Supplementation is essential for performance‚ but is energy drinks or sports drinks the best source of nutrients when replenishing glycogen store? The project that I am conducting is concerning the impact of the consumption of chocolate milk and its effects on protein turnover‚ muscle glycogen and performance during recovery from endurance exercise (2). The research
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heart rate. After running 2.5 kilometres and swimming 250 meters the average person would be quite tired/exhausted‚ but with the correct fitness exercises to work on cardiovascular endurance it would get easier and easier to run such an event. The reason your cardio performance can be improved is because the heart is a muscle‚ and like all other muscles in the body if you keep working it it will adapt to the workload given. This allows us to have direct control of how healthy one of the most important
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Exercise 2: Skeletal Muscle Physiology: Activity 1: The Muscle Twitch and the Latent Period Lab Report Pre-lab Quiz Results You scored 20% by answering 1 out of 5 questions correctly. 1. Skeletal muscles are connected to bones by Your answer : c. ligaments. Correct answer: b. tendons. 2. Skeletal muscles are composed of hundreds to thousands of individual cells called Your answer : b. myofibrils. Correct answer: c. fibers. 3. The term motor unit refers to Your answer : b. all of the activated muscle
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Exercise 2: Skeletal Muscle Physiology: Activity 4: Tetanus in Isolated Skeletal Muscle Lab Report Pre-lab Quiz Results You scored 100% by answering 3 out of 3 questions correctly. 1. Stimulus frequency refers to You correctly answered: b. the rate that stimulating voltage pulses are applied to an isolated whole skeletal muscle. 2. Which of the following distinguishes a state of unfused tetanus from a state of complete (fused) tetanus? You correctly answered: d. Muscle tension increases and decreases
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REVIEW SHEET EXERCISE 6 Cardiovascular Physiology NAME: LAB TIME/DATE: 1. Define each of the following terms: • autorhymicity- The heart is autorhythmic. This means it generates its own rhythmic action potential independent of the nervous system. • sinoatrial node- is the impulse-generating (pacemaker) tissue located in the right atrium of the heart‚ and thus the generator of normal sinus rhythm. • pacemaker cells- are specialized cells that cause involuntary muscles and tissues to
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to increase in direct translation to the concentration increasing. The theory surrounding this lab was to see in practice how density could be determined with displacement and then to determine whether the density does in fact increase directly with the concentration. Summary of Key Data Figure 1: From Part 1 Mass of Brass 13.2200g Initial Volume 16.86mL Finial Volume 18.45mL Figure 2: From Part 2 Mass of the Empty 50-mL Flask 37.393g Weight of Flask Filled with 50-mL of Water 87.096g Weight Closest
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