Write two things that's interesting from the video "Muscle matters: Dr Brendan Egan at TEDxUCD" and include the time video you found interesting and directed quote and explanation with why it's interesting.

I need to describe the architecture of “Rectus Femoris” muscle and how it relates to its function.

Reference Material: CH 5.5c, 10 and 11.2, Saladin A&P Textbook Lab Learning Outcomes: Upon completion of this lab, the student will be able to: Define: 1. 2. aponeurosis agonist (prime mover) antagonist synergist fixator fascia insertion isotonic contraction isometric contraction origin Describe the gross and microscopic anatomy of a muscle using the terms whole muscle, sarcomere, myofilament (actin and myosin), endomysium, perimysium, epimysium, sarcolemma, fascicle, muscle fiber, myofibril, and tendon appropriately. Identify these structures in an image.

Muscle physiology: You are in the gym and doing strength training. You feel in good shape and should try to break personal records in squats. You place the bar on your back and start to take in, ie. your motor neurons begin to send action potentials through all your motor units to the thigh muscles. Task 1: Describe how these action potentials lead to your muscles contracting. The description must follow the correct sequence order and you must explain what happens and why. Task 2: What is the contraction called when you a) bend down and b) are in good shape and can generate more force than what the bar weighs c) stay standing in a and the same position without being able to push yourself up while standing?

Complete the following table on muscle characteristics. You may type your answers in a list below numbered by the corresponding box in the table. Cardiac (contractile) Skeletal How many nuclei per cell? 1 2 Is the tissue striated? 4 Describe the shape of the cell. 5 6 Is this muscle regulated by somatic motor neurons? 7 8 Average duration of action potential 10

e. M line: Photo courtesy of LUMEN (Loyola University Medical Education Network) 5. On the photograph above, label the A band, I band, z disc, and a sarcomere. I 6. The sliding filament theory is used to explain the physiology of skeletal muscle contraction. On your own, using what you have learned from this activity, write your own description of what the sliding filament theory states.

List the defining visual characteristics of this muscle and draw arrows to features on the photograph that illustrate each characteristic. Muscle type: Visual characteristics 1. 2. 3. 4.

Fast oxidative glycolytic fibers in skeletal muscle are used Select one: O a. intermittently, for activities requiring more force output than the fast glycolytic fibers alone can produce. O b. constantly, for postural activities such as standing and sitting. O c. intermittently, for activities requiring more force output than the slow oxidative fibers alone can produce. O d. only for motions requiring maximum power output, such as jumping.

Chose two of the major muscles or muscle groups. Using correct terminology and with reference to insertion and origin points, describe how the muscle originates proximally and inserts distally to cause a movement at the joints that are crossed What types of movement does this create, and what are some actions that involve the use of these movements? Give another example of when the movement would be used during physical activity, sports and/or everyday life.    (please help!!)

Using the information from this chapter and otherresources, how would you strengthen the fourrotator cuff muscles? Give several examples ofhow these muscles are used in everyday activities.