Spring 2003- Bio 2424: Human Physiology

Bio 2424: Human Physiology – Spring 2007 Lab Review Guide: Sensory Physiology I: Cutaneous, Auditory, Vestibular

Remember: It is your responsibility to determine what parts of the information you are responsible for and that you may need extra assistance with. This cannot be done, if you are not using these checklists. They are designed to help you identify specific instructional objectives you will be expected to meet, if you are to do well on an exam. They cannot help you, if you do not use them.

Review your lab notes, experimental data, and results from last week.

Be prepared to answer questions, especially definitions, and solve problems similar to those done in this activity. These sheets are your content checklists for the lab exam. (Check with your lab instructor should you have questions pertaining to each of these) Reading Assignments / Pertinent References: Read the following assignments before coming to lab in order to be well prepared for each of the planned activities, assignments, and Pre-lab quiz. Also be sure to bring a Scan-Tron answer sheet and #2 pencil to lab for the Pre-Lab quiz: 1) Interactive Physiology (IP): Nervous II; Synaptic Potentials and Cellular Integration (1-11). Also – you may find it quite helpful over the next 2-3 weeks to return to and review last week’s IP assignments as a reinforcement of concepts labs and lectures are building upon at this time in the course. 2) Tharp Lab Manual: Sensory Physiology I: Cutaneous, Hearing on pp. 83-94 and pp. 74-76 & 79-80 (over Labyrinthine Reflexes) 3) Silverthorn Textbook Reference: Read / Review Pages (Review pertinent page from last week lab) and all pages in Chapter 10 up to, but not including the eye and vision physiology: Chapter 10 – Sensory Physiology pp. 327-358 The above assignments: Text (Silverthorn), Lab Manual (Tharp), and the IP Web tutorials will be reviewed in formulating the questions on the pre-lab quiz for next week. Expect a shift in emphasis, i.e. more questions to come from readings this time since IP activities represent less of your course time budget this week. (Check with your lab instructor should you have questions pertaining to each of these)

Review and Content Applications: Activities which may be completed during lab sessions “in-class” or utilized between scheduled lab sessions. Material covered in these assignments / activities may be reviewed by your instructor in formulating lab exam questions. No assigned PhysioEx 6.0 activities for this LRG

Key Words / Technical Terms: You will be expected to have familiarity with the meaning and use of each of the following terms.

Two point discrimination test Action potential Referred pain Somatic senses Stimulus threshold Phantom-Limb Syndrome Visceral senses Tonic receptor Maleus, incus, & stapes Sensation Phasic receptor Endolyph Perception Generator potential Perilymph General senses Receptor potential Organ of corti Special senses Projection Tympanic membrane Sensory adaptation Lateral inhibition Oval window membrane Semicircular canals Labeled line coding Vestibulocochlear nerve Utricle Localization Otoliths Saccule Weber’s Law Utricle Perceptual threshold Sensory modality Saccule Graded potential Nociceptor

After reading the assigned references and completing the lab session, reviewing your results, lab notes, and lab report questions for this lab and the labyrinthine reflexes, you should be able to:

1) Answer lab report questions: - on pages 79-80 (on Labyrinthine reflexes). Complete, analyze and interpret the results of the experiments performed on class volunteers.

- on pages 89-91, and 93 and be able to analyze and interpret similar experimental data as was collected and recorded in your lab report during this session. 1 2) List the six sensory modalities for humans.

3) Be able to diagram the path and label the anatomical components involved, that a nerve impulse would follow from a sensory receptor to it’s specific location for processing in the CNS for each of the following modalities or sensory stimuli. Sound vibration (sound), Tendon Stretch in the Knee, Bending over at the waist Distention of the urinary bladder Light touch on a fingertip,

4) Be able to explain the physiological mechanism associated with the inner ear and equilibrium and balance responses as discussed in lab in association with the labyrinthine reflexes. Be able to predict the normal responses given each of the three conditions for head position and direction of spin. Be able to identify the specific sensory receptor associated with each of these.

5) Diagram the path sound waves take in triggering an auditory sensory nerve impulse.

6) Review and be able to recognize and correctly label the anatomy of the human ear.

7) List the five categories of sensory receptors and give an example of a typical stimulus for each one.

8) Define the term transduction and be able to explain the basic process for touch and sound stimuli.