Skeletal Muscle Physiology Activity 1 1. Skeletal muscle fiber- long‚ cylindrical cell with multiple oval nuclei arranged just beneath the sarcolemma Motor unit- all of the muscle cells controlled by a single motor neuron Skeletal muscle twitch- a single stimulus-contraction-relaxation cycle in a skeletal muscle Electrical stimulus- uses an electrical current to cause a single muscle or a group of muscles to contract Latent period- the time between the stimulation of a muscle and the start
Premium Neuromuscular junction Skeletal muscle Muscular system
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
Premium Muscle contraction Muscle Muscular system
ACTIVITY 6: The Skeletal Muscle Length-Tension Relationship 33. In a force-length graph‚ a. the muscle length is the independent variable. b. the amount of force generated is the dependent variable. c. both active and passive forces must be considered. d. All the above are correct. correct answer 34. According to your lab manual‚ the protein titin is the primary cause of _________ __________. Passive Force 35. In this lab simulation‚ the muscle length of _______ mm
Premium Myosin Muscle Actin
The Pros & Cons of “Ripped Muscle X” ! “Ripped Muscle X” is nothing but a dietary supplement which is pretty much similar to the various supplement available in the market today which talks about gaining lean muscles faster‚ losing weight‚ gaining extra energy as well as increasing the sexual drive in men. However‚ this claim has been made by the other supplements prevalent in the present market as well‚ this supplement talks about decreasing the level of fat in the body by increasing the metabolic
Premium
Compare and contrast cardiac and smooth muscle. In cardiac muscle‚ each heartbeat is triggered by the hearts own pacemaker cells‚ which initiate electrical discharge and when this reaches the contractile muscle cells (the cardiomyocytes)‚ they create an action potential which increases the concentration of calcium ions into the cell. Calcium ions play a key role in activating what is known as the contractile machinery – the actin and myosin filaments. The cardiac action potential‚ unlike other forms
Premium Heart Muscle Cardiac muscle
thoroughly asses my non dominant arm tennis ball throw from my preparation phase to my execution phase of the throw. Just looking at the shoulder of my left arm which is a Ball and Socket synovial joint‚ which is a joint that allows for a large range of different movements. From the preparation phase to the execution phase‚ my left shoulder is abducted with slight protraction this is because my arm is away from my midline. This is happening due to my agonist muscle which is my deltoids which are contracting
Premium Human anatomy
Progressive Relaxation/Deep Muscle Relaxation Description of technique: While inhaling tense a group of muscles such as you fist‚ your arms‚ your legs‚ or your back. Relax the muscles while exhaling. Repeat. Summary or analysis of personal experience: I used the Progressive Relaxation Technique by taking a deep breath in and tensing a group of muscles in my body for a slow count of five‚ and then slowly relaxing the muscles while exhaling to a slow count
Premium Urinary bladder Relaxation technique Heart
Review: Skeletal Muscle Tissue Graphics are used with permission of: Pearson Education Inc.‚ publishing as Benjamin Cummings (http://www.aw-bc.com) Page 1. Introduction • Skeletal muscle cells have unique characteristics which allow for body movement. Page 2. Goals • To compare and contrast smooth muscle cells‚ cardiac muscle cells‚ and skeletal muscle cells. • To review the anatomy of skeletal muscle. • To examine the connective tissue associated with the skeletal muscle. • To review
Premium Muscle Skeletal muscle Cardiac muscle
Identify the muscles in the anterior compartment of the leg The leg is divided into three compartments by tough fasciae to hold the muscles and proper functioning of these muscles during their contraction. These compartments also contain nerves and vessels. The three main compartments are anterior (extensor)‚ lateral (fibular) and posterior (flexor). The anterior compartment (Extensor compartment) contains muscles which are used for extension (dorsiflexion) of the foot as these muscles have origin
Premium Muscle Knee Muscular system
together in order to keep you alive and well. You will be exploring then parts of your body by using various web resources!!!! A. Skeletal System Your Foundation: Bones‚ beneath it all Why can’t a skeleton lift weights? Because he is all bones and no muscle!!!! Scenario: The injured athlete You are watching a high school football game and the running back comes off the field with an injury to his knee. He can walk on it but it seems unstable. Later on his knee is swollen and he goes to the doctors
Premium Anterior cruciate ligament Bone Ligament