Muscular System Lab Report

Using electrodes on the bicep to record the motor unit recruitment during all four conditions: control, stretching, cardio, and aerobic stretching. As shown in figure 5, the control group and the stretching are similar in the amount of EMG amplitude (mV). However, when comparing stretching with both cardio and aerobic stretching there is an increase as the intensity of the warm-up. Moreover, aerobic stretching has the highest EMG amplitude, which shows that there is motor unit cycling. Motor cycling provides a more efficient performance on the bicep because more of the muscle is being used (Widmaier, et al.,

The human body contains three kinds of muscle tissue: cardiac muscle, smooth muscle and skeletal muscle; each performs specific tasks to maintain homeostasis – the tendency to maintain a stable equilibrium between interdependent elements, mainly that which is maintained by physiological processes. The primary function of muscle, regardless of kind, is to convert chemical energy to mechanical work, which in turn allows the muscle to shorten or contracts. The muscle tissues observed in this experiment is the skeletal muscle which are usually attached to the skeleton. As a result, contraction of the skeletal muscle moves one part of the body with respect to another.

It compares three specific muscles in the human body that vary in muscle tissue type in terms of:

Biceps Brachii - It's attachments are the coracoid process, supraglenoid tuberosity, and radial tuberosity. When it contracts it causes flexion and supination. It's located close to the endangerment site the antecubital. This area is known for housing chronic pain.

Introduction: According to the “Human Physiology Laboratory Manual “,BIOL 282 ,page 31 , the reason of performing this experiment is to learn how the muscle contraction occurs based on the molecular level and what kind of factors are involved .As a matter of fact, skeletal muscles contain a lot of nuclei because of the cell fusion while being developed and are made of cylindrical cells that have myofibrils. The myofibrils contain sarcomeres and the

Muscles in human body is like the motor which supports or assist the bones at the joints to move and work. When the muscle pulls it moves the bones at particular joints, which establish the joints to move about.

depend on how low the Brachiardialis Muscle. The bicep muscle dose flexion. The triceps muscle dose

The body has many amazing systems within it. The muscular system is on of the systems that is the most intriguing. Type I, Type IIa, and Type IIb comprise the muscular fiber types within the human body. Type I or Slow-twitch fibers contain mitochondria. These mitochondria use the oxygen that is taken in to create adenosine triphosphate (ATP). ATP fuels muscle contraction. Type I fiber is considered to be aerobic due to the use of oxygen. The slow-twitch muscle fibers are also known as red fibers. This alias is due to the dark red appearance cause by the amount of myoglobin within the fiber. Slow-twitch fibers are the first within the body to be activated due to having a lower activation threshold. They create their own energy source which allows these fibers to sustain force for a longer period of time. The negative aspect is they are unable to create a large amount of force. If the fibers are unable to generate the amount of force that is needed then the fast-twitch fibers will be activated.

Our body has three muscle types, skeletal muscle , cardiac muscle, and smooth muscle. Each muscle has different functions within the body. Cardiac muscle is located in the heart and is responsible for pumping blood within the heart. Cardiac muscle is one of the two muscles with an activity that is non-voluntary meaning that signal from the motor neuron is not required for blood to pump through the heart. The second type of muscle is smooth muscle which is located in the intestines and responsible for moving food and regulating blood pressure(Freeman, 2011). Like cardiac muscle, smooth muscle also requires non-voluntary activity, where the signal from the motor neurons is not required for it to function properly. Lastly, the most important muscle in the neuromuscular junction, skeletal muscles. Skeletal muscle is attached to the bones through tendons composed of connective tissue and is responsible for moving the skeleton, however unlike the other two muscle types, skeletal muscle requires voluntary activity meaning that signal from the motor neurons is required (Ritchison, 2016). In this paper, I will be discussing the functions and parts of the neuromuscular

The musculoskeletal allows the body to function through a group of muscles, bones, tendons, cartilage and ligaments. The body moves through different muscle contractions. This makes the bone pull towards the contracting muscles. The skeletal system provides a structure for the body, while the muscular system creates movement in the bones of the skeletal system by contracting and relaxing. When exercising, the muscles increase in pliability. This is when the muscles become more pliable as they become warm, reducing the chance of getting an injury. They become more pliable as the muscles contract really fast when exercising. The contractions generate heat take makes the muscle more pliable.

The human muscular system is made up of over 600 connecting muscles. All of the muscles work together in sync to make your body move in inumerable different ways.

A twitch is a contraction caused by one action potential. HYPOTHESIS!!!!!!!!!!!!!!!! In experiment 2, we measured muscular twitch in the thumb by using a finger pulse transducer and attaching a stimulus electrode to send shock through the ulnar nerve in the wrist. In experiment 3, we observed summation and tetanus by opening a new chart window, and placing the bar stimulus on the left wrist to send impulses to. In experiment 4, we measured the electrical activity of the median nerve stimulation by using the Bio Amp and the bar stimulus to stimulate the median nerve in the wrist and elbow.

The muscular system is the part of the body that assists with motor function and movement. There are three types of muscles in the human body that are included within this system. Smooth muscles are involuntary and are found inside organs such as the stomach and throat. Skeletal muscles are voluntary and are located everywhere throughout the body. The third type of muscles are cardiac muscles that are involuntary and keep your heart beating.

The Physiology of Movement SS4203 Name: Michelle Dullea Student ID: 15156524 Date: 25/11/2016 Lab 2; Characterisation of Joint angle- force Relationship Introduction: The aim of this lab report is to investigate the relationship between external joint angle and muscle force production. We measured maximal isometric strength in the quadriceps and hamstrings using the strain gauge system. The strain gauge allows force produced by the volunteers to be measured in Newtons.

There are 650 skeletal muscle in human body. Skeletal Muscle composed of a thread like myofibrils{threadlike longitudinal} and sarcomeres{basic unit of a muscle} that forms muscle fiber and are the basic unit of contraction. Motor Neurons are nerve cell. They tell you when your muscle are getting stronger, the better you become at strengthening your muscle the stronger you will get. This is involved in the growth of a muscle and disrupts homeostasis within your body. Your body repairs and replaces damaged muscle where muscle fibers to form new muscle protein strands. When muscle growth to occur you must force your muscles to adapt by creating stress that is different than your body has already adapted to. This is can be done by lifting heavier weights, continually changing your exercises so that you can damage more total muscle fibers and pushing your muscles to fatigue while getting a the pump.