Lab 4 Anon - Lab Report due at end of class. These are the correct answers via Lecturer and PDF

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Lab Report due at end of class. These are the correct answers via Lecturer and Teaching Fellow...

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BI315: Systems Physiology Just type in your names below **If template is not on the front page, -1pt from post-lab

Spring 2018 Quiz*

Pre-lab

Post-lab

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______ /10 ______ /2 *Quiz total includes questions (8 pts), attendance (1 pt), appropriate dress and lab cleanliness (1 pt)

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Partner 3 Name:

RQ1 Page 44., Mechanoreceptors are sensory receptors that can be categorized as (a) exteroreceptors, (b) interoreceptors, (c) both, (d) neither Mechnoreceptors can detect internal and external stimuli. RQ2 Page 49., Is the EMG signal on the top or bottom channel? What color is the trace when you hit record? The EMG signal is on the top channel. The color of the trace, while recording is blue RQ3 Page 50., EMG strength should be measured with (T2-T1 OR V2-V1). RQ4 Page 52., The pupillary reflex is an example of a (somatic OR autonomic) reflex. RQ5 Page 52., If a PATIENT had a rank of 1 for this part of the Romberg Test, damage would most likely be due to the (a) vestibular pathway, (b) visual pathway, (c) propioreceptor pathway.

Figure 1a – Patellar reflex data

BI315: Systems Physiology

Figure 1b – Jendrassik Maneuver data

Figure 2 – Screenshot of learned response data

Spring 2018

BI315: Systems Physiology

Spring 2018

0.2 0.18 0.16

Latency (sec)

0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Reflex test

Learned Response

Jendrassik Maneuver

Figure 3 – Latency vs tendons 1.1 – EMG strength would increase because the higher brain would be more preoccupied with executing the arm activity; thus, the higher brain would not be able to inhibit the lower brain (which is responsible for the patellar reflex). Thence, there would be a stronger EMG amplitude. EMG latency should not be affected. 1.2 Both pupils should change size simultaneously due to a light stimulus, 1.3 The open eyes both legs on the floor would be representative of a patient exhibiting poor balance because all three pathways are open, so if something is wrong ie. they cannot balance well, this indicates an issue in one of the pathways. This test would also be the best balance outcome (healthy) because there are no factors – that contribute to good balance- that are being left out. 2.1 the learned response would have the longest latency period due to the fact of added response time when the patient has to hit the marker....