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Imagine that you are a muscle physiologist and studying muscle fatigue in human subjects.  You ask your subject to squeeze a device that measures grip strength with their dominant hand as hard as they can and for as long as they can.  You determine that your subject’s forearm muscles fatigue  at 64 seconds using the same criteria as our virtual lab simulation on this topic in Lab 6.  In a sentence or two, provide a physiological explanation for HOW (mechanistic perspective) this fatigue occurred at around that time with as much detail as you can muster.

Look at this graph carefully: A bright light with a wavelength of 600 nm will appear greenish-yellow.  Which photoreceptor(s) will be triggered or activated and represent this color of light? (YOU MAY CHOOSE MORE THAN ONE ANSWER IF IT IS APPROPRIATE)

Below you will find the equation sheet for this test.  You may access it as many times as necessary. Physics 1 Equation Sheet – Summer 2021.pdf 

This sensor specifically detects extreme stress or tension on a skeletal muscle. Type the best answer into the text box below:

To which specific nerve is the ORANGE arrow pointing? _______ To which specific nerve is the GREEN arrow pointing? _______

To what brain structure is the ORANGE arrow pointing? _______ To what brain structure is the GREEN arrow pointing? _______

Read the following scenario carefully: Jack is working out at the gym.  To impress that special someone he met during his last visit, he added far too much weight to the barbell he intends to use for a set of biceps curls.  As he strains to lift this excessive weight for the first time, an excessive level of force is placed on his biceps muscles, to the point where they are about to tear from the bone. In the space provided below, describe the steps of the negative feedback loop that his body will use to solve this problem of excessive strain on his biceps muscles and protect it from damage. You may list the generic steps and give a brief description, like this: 1) Stimulus – blah blah blah (i.e., type your description of this step) 2) Sensor – yadda yadda yadda (i.e., type your description of this step) etc., etc., until you describe the desired Response Make sure to list all the generic steps of a feedback loop for this class in their proper order AND describe the specific physiological details for each of those steps EXACTLY as if you were drawing a feedback loop diagram.  Include all the extra details that you learned in Lab 7 for completing feedback loop scenarios.

This test was performed during Lab 5 to measure and correct the visual acuity of several virtual patients. Type the best answer into the text box below:

To what opening is the GREEN arrow pointing? _______

Imagine a person experiencing hypothermia.  In a few complete sentences, describe ONE possible effector that can help to solve this problem AND also what action(s) that effector will perform.