Reflex and Special Senses
Name: Stephanie Frost Section: Bio 201
Lab Report: Reflex and Special Senses
Please fill out this report and submit it to the dropbox. Do not hand in your own form. It will not be graded and you will receive a zero for the lab.
You must get all parts correct to get credit for the question * Please note that although you do not hand in items in observations, it is very important to do these as you may see some of these items on future/associated lab quizzes or be asked about some of these concepts on unit assignments.*
Activity 1: Stretch Reflexes
QUESTIONS:
A. Which muscles contract with the patellar reflex? Quadriceps What spinal level does this correspond to? L2, L3, and L4.
B. What is the difference between hypo-reflexive and hyper-reflexive responses? (What do these indicate?) Hyperflexia is defined as an increased action of the reflexes.1 Hyperflexia (exaggerated response) results from damaged or diseased motor areas in the CNS.2Hypoflexia is defined as a diminished function of the reflexes. Hypoflexia (inhibited response) results from degeneration of nerve pathways, voluntary motor control, and other factors.2
1. Taber’s Cyclopedic Medical Dictionary
2. http://ghsaandp.weebly.com/uploads/5/3/4/7/5347576/nerve_reflex.pdf
C. What can you conclude about the effect of mental distraction on reflex activity? As the test subject, I can conclude that metal distraction had no effect on my reflex activity. My reflexes were just as strong before the test as during.
D. If a muscle is fatigued from exercise and you then test the associated reflex, do you think you will see a greater or lesser reflex? Explain your reasoning. Lesser reflex. According to Saladin, central fatigue causes the central nervous system to produce less signal output to the skeletal muscles.
E. Describe the Achilles tendon
Lab Report: Reflex and Special Senses
Please fill out this report and submit it to the dropbox. Do not hand in your own form. It will not be graded and you will receive a zero for the lab.
You must get all parts correct to get credit for the question * Please note that although you do not hand in items in observations, it is very important to do these as you may see some of these items on future/associated lab quizzes or be asked about some of these concepts on unit assignments.*
Activity 1: Stretch Reflexes
QUESTIONS:
A. Which muscles contract with the patellar reflex? Quadriceps What spinal level does this correspond to? L2, L3, and L4.
B. What is the difference between hypo-reflexive and hyper-reflexive responses? (What do these indicate?) Hyperflexia is defined as an increased action of the reflexes.1 Hyperflexia (exaggerated response) results from damaged or diseased motor areas in the CNS.2Hypoflexia is defined as a diminished function of the reflexes. Hypoflexia (inhibited response) results from degeneration of nerve pathways, voluntary motor control, and other factors.2
1. Taber’s Cyclopedic Medical Dictionary
2. http://ghsaandp.weebly.com/uploads/5/3/4/7/5347576/nerve_reflex.pdf
C. What can you conclude about the effect of mental distraction on reflex activity? As the test subject, I can conclude that metal distraction had no effect on my reflex activity. My reflexes were just as strong before the test as during.
D. If a muscle is fatigued from exercise and you then test the associated reflex, do you think you will see a greater or lesser reflex? Explain your reasoning. Lesser reflex. According to Saladin, central fatigue causes the central nervous system to produce less signal output to the skeletal muscles.
E. Describe the Achilles tendon