I have only listed the questions that required answers that are a part of this exercise. A C T I V I T Y 1 Identifying the Latent Period How long is the latent period? _____2.78____ msec Note: If you wish to print your graph‚ click Tools on the menu bar and then click Print Graph. 5. Increase or decrease the stimulus voltage and repeat the experiment. (Remember that you can clear the tracings on the screen at any time by clicking Clear Tracings.) Record your data here: Stimulus Latent voltage:
Premium Muscle Skeletal muscle
from an experimental animal is electrically stimulated‚ it behaves in the same way as a stimulated muscle in the intact body‚ that is‚ in vivo. Hence‚ such an experiment gives us valuable insight into muscle behavior. The Motor Unit and Muscle Contraction A motor unit consists of a motor neuron and all of the muscle fibers it innervates. Motor neurons direct muscles when and when not to contract. A motor neuron and a muscle cell intersect at what is called the neuromuscular junction. Specifically
Premium Neuromuscular junction Skeletal muscle Muscle contraction
Lab Analysis Questions (5 pts each) 1. Explain the effect that periods of recovery have on the force of a muscle‚ as compared to a continuous multiple stimulus fatigue. When a stimulus is provided‚ the muscle twitch is divided into latent‚ contraction‚ and relaxation. If continuous multiple stimuli are provided to a muscle without letting it to relax and recover its original shape‚ the muscle gets fatigued and cannot work properly 2. Does the
Free Muscle contraction Muscle Muscular system
contracts during movement in order to support the main movement occurring. * ISOMETRIC (Static Contraction) Muscle contracts but does not change in length. Two Types of Isotonic Contractions are: * CONCENTRIC Muscle shortens‚ contracts‚ working muscle. (Also known as the AGONIST) * ECCENTRIC Muscle lengthens‚ relaxing muscle. (Also known as the ANTAGONIST) * ISOTONIC (Dynamic Contraction) Muscle contracts and there is change in length causing movement. * FUNCTION
Premium Blood Heart Red blood cell
Module Question Answer 8.1 (b) Describe the components of a synovial Joint‚ and identify the functions of each. Components of a synovial joint are: Fibrous articular capsule (or joint capsule)‚ which surrounds the joint Articular cartilages‚ which resemble hyaline cartilages and cover the articulating bone surfaces Synovial fluid‚ which is located within the joint cavity and provides lubrication‚ distributes nutrients‚ and absorbs shocks 8.2 (a) Identify the types of synovial joints based
Premium Myosin Muscle Muscle contraction
1) THE MUSCULAR SYSTEM 3.1 INTRODUCTION OF MUSCULAR SYSTEM. Muscles tissue do is done by the coordinated contraction and release of millions of sarcomeres‚ tiny structures within the muscles cells. Muscle activity accounts for the most of the body’s energy consumption. All muscles tissues is strong. Most is enduring‚ some of it astoundingly so. Its cells are crowded with mitochondria‚ thousands of little factories constantly turning out molecules of ATP‚ a refined fuel. There are three types of
Premium Muscle Muscular system Cardiac muscle
PDH study Summary What reasons do people participate in outdoor rec? (SCSPSEA) * Stress management * Challenge and excitement * Social interaction * Personal growth * Self-sufficiency * Enjoyment * Appreciation of the environment Planning for outdoor rec (RFLCCN) Ralph Freaking Lauren Cuts Clothes Neatly/Nicely * Risk assessment * Finding the hazards identifying the risks * Management – working out how to combat or avoid them. * Food and water
Premium Blood Newton's laws of motion Muscle
following terms: • motor unit - A motor unit consists of a motor neuron and all of the muscle fibers it innervates. • twitch - Skeletal Muscle twitch is the mechanical response to a single action potential. It has three phases known as the latent‚ contraction‚ and relaxation phase. • threshold - the threshold is the minimal stimulus needed to cause a depolarization of the muscle plasma membrane (sarcolemma.) The threshold is the point at which sodium ions start to move into the cell (instead of out of
Premium Neuromuscular junction Skeletal muscle Acetylcholine
You scored 100% by answering 5 out of 5 questions correctly. 1. During an isometric contraction You correctly answered: d. the skeletal muscle is generating force‚ but it remains at a fixed length. 2. The force that results from muscles being stretched is You correctly answered: a. passive force. 3. Active force You correctly answered: b. is determined by the amount of myosin bound to actin. 4. When you generate the isometric length-tension curve‚ which of the following forces will not be indicated
Premium Myosin Skeletal muscle Muscle
A motor unit consists of a ___1___ and all the ___2___ it innervates. Whole muscle contraction is a(n) ___3___ response. A ___4___ is the response of a muscle to a single‚ brief threshold stimulus. When the frequency of stimulation is so high that the muscle tracing shows fused peaks‚ ___5___ has been achieved. ___6___ is the stimulus strength at which the first observable muscle contraction occurs The phenomenon‚ called ___7___‚ brings more and more muscle fibers into play
Premium Muscle Skeletal muscle Acetylcholine