Class Notes (890,443)
US (345,132)
Ball State (1,430)
PHYS (11)
PHYS 215 (11)
Lecture 9

PHYS 215 Lecture 9: Reflexes
Premium

6 Pages
77 Views

Department
Physiology
Course Code
PHYS 215
Professor
Kelly Worden

This preview shows pages 1 and half of page 2. Sign up to view the full 6 pages of the document.

Loved by over 2.2 million students

Over 90% improved by at least one letter grade.

Leah — University of Toronto

OneClass has been such a huge help in my studies at UofT especially since I am a transfer student. OneClass is the study buddy I never had before and definitely gives me the extra push to get from a B to an A!

Leah — University of Toronto
Saarim — University of Michigan

Balancing social life With academics can be difficult, that is why I'm so glad that OneClass is out there where I can find the top notes for all of my classes. Now I can be the all-star student I want to be.

Saarim — University of Michigan
Jenna — University of Wisconsin

As a college student living on a college budget, I love how easy it is to earn gift cards just by submitting my notes.

Jenna — University of Wisconsin
Anne — University of California

OneClass has allowed me to catch up with my most difficult course! #lifesaver

Anne — University of California
Description
1. Reflexes  Reflexes o Any response that occurs automatically without conscious effort o Simple or basic  Built in  Remove hand from hot stove  Spinal cord  Acquired or conditioned  Practice or learning o Reading music while playing o Brain  Reflex arc o Receptor  Responds to stimuli o Afferent pathway  Sends signal to integrating center  Integrating center o Processes information o Makes a decision o Efferent pathway  Instructions to muscle or gland o Effector  Muscle or gland carriers out response  Withdrawal reflex o Basic reflex  Pain receptor  Afferent to spinal cord  Message to activate neurons  Efferent to activate bicep muscles  Inhibit triceps muscles  Message of pain passed up to brain  Arm flexes and hand pulls away  Polysynaptic  Stretch reflex o Activation of stretch receptor o Afferent neuron terminates directly on an efferent o Efferent supplies muscle o Muscle contracts to counteract stretch o Monosynaptic  Other reflexes o Crossed extensor reflex  Ensures opposite limb will bear weight of body as injured limb is withdrawn  Receptor physiology o Photoreceptors – responds to light o Mechanoreceptors – responds to physical force  Touch, pressure, stretch, tension, or vibration o Nociceptors – responds to tissue damage o Proprioceptors – responds to change in position and movement o Chemoreceptors – responds to chemicals  Receptor potential o Receptor  End of neuron  Generator potential  Cell closely attached to a neuron  Receptor potential o No refractory period o Receptor potential is converted into an action potential  Adaption o Tonic receptors  Do not adapt or slowly adapt  Stretch receptors o Phasic receptors  Adapt quickly  Tactile receptors  Receptive field o Area monitored by a single neuron o Discrimination – ability to distinguish origin of stimuli  Fine – small receptive field  Poor – large receptive field o Lateral inhibition  Block weaker
More Less
Unlock Document
Subscribers Only

Only pages 1 and half of page 2 are available for preview. Some parts have been intentionally blurred.

Unlock Document
Subscribers Only
You're Reading a Preview

Unlock to view full version

Unlock Document
Subscribers Only

Log In


OR

Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit