Junction

REVIEW SHEET EXERCISE 2 Skeletal Muscle Physiology NAME: Jasmine Young LAB TIME/DATE: 1. Define each of the 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

Why this is a CLASSIC PAPER? There are three major reasons why this paper is considered a classic paper. Firstly it was the first paper to directly investigate the functional significance of motor neuron size and was one of a series of five papers published in 1965 linking many different neuromuscular concepts together such as recruitment, usage and motor neuron pool. (cite Amanda paper) Secondly it was the first paper to establish a set of rules that defined orderly recruitment of motor units coined

“Stay Down! Stay Down! Nice little mouse,” Doctor Goldman said wearily as he stumbled to the floor. “NO! NO!,” he shouted and then it went silent. The whole experiment started off to show how human glial cell transplants could help cure diseases like alzheimer's and multiple sclerosis.Glial cells make up over eighty percent of the brain cells with neurons making up the roughly other twenty percent. The glial cells are responsible for guarding and protecting the neurons. The hope was that because

The Junction Gardens Business Improvement Area (BIA) is a small highly circulated art district that runs along Dundas Street West. It can be found northwest of Bloor Street and Yonge Street and is easily accessible by a variety of transportation forms. On October 13th, around noon, I had visited the “heart” of this BIA at its major intersection of Dundas Street West and Keele Street with the aid of the Toronto Transit Commission (TTC), which services thousands of commuters. Transportation in the

The Musculoskeletal system is under the control of the nervous system and is responsible for human movement; this is comprised of the skeletal and muscular system, with the human body containing 640 skeletal muscles (Watkins 2010). Skeletal muscle is made up of muscle fibres (myofibres) and contain multiple nuclei; within the cytoplasm of these cells, there are long chains of myfibrils which are chains of many sarcomeres and these run from end to end of the muscle. Sarcomeres are comprised of thin

NAME Rachel Brockhuis LAB TIME/DATE _______________________ Exercise 2 Skeletal Muscle Physiology The Muscle Twitch and the Latent Period 1. Define the terms skeletal muscle fiber, motor unit, skeletal muscle twitch, electrical stimulus, and latent period. Motor unit- single α-motor neuron and all of the corresponding muscle fibers it innervates; all of these fibers will be of the same type Skeletal muscle fiber- long and narrow cells that often span the entire length of a muscle Skeletal muscle

The peak of the CAP changes with different strength stimulus because the sizes and thresholds of the nerve fibres within the nerve is different. Larger nerve fibres have lower threshold stimuli than smaller ones, hence larger fibres were activated first, followed by smaller ones. As stimulus strength increased, the larger nerve fibres began firing followed by the activation of the smaller ones (refer to Figure 2). At the maximal stimulus a constant pattern was formed. This was because all the nerve

Interaction points of spatial networks are linked to each other by what the writer’s term as channels, and they’re the paths through which material is transported. A definite sequence of linked edges in spatially embedded graph will form a channel. As you look at figure 1a, the roads are your channels, the pipeline network pipes, and tracks in railway networks are different examples of channels. The channels of which the writers have termed have exactly two end points, where the end points of a channel

Purpose In the present era where energy demands growing rapidly the solar module is one of the solutions and a good one. “More energy from the sunlight strikes the Earth in one hour (4.3 × 1020 J) than all the energy consumed on the planet in a year (4.1 × 1020 J)” therefore solar energy has a bright future ahead. The first solar cell was invented in 1953 and had efficacy rate of 4 present while toady’s solar cell is 40 present efficient. SolarCity is using the one of the efficient solar panels which

Review for final 1. What is the device that allows AC to pass through an amplifier circuit while blocking DC? a. Regulator capacitor b. Coupling capacitor c. Rheostat d. Diode 2. Which amplifier has the BJT as the most commonly used amplifier? a. CC b. CB c. CE d. Op-amp 3. How do we determine the voltage gain of the common-emitter amplifier? a. Divide the AC collector resistance by the AC emitter resistance b. Divide the AC collector resistance by the AC base resistance c. Divide the AC emitter