Do Now:  Page 22
This presentation is the property of its rightful owner.
Sponsored Links
1 / 22

Do Now: Page 22 PowerPoint PPT Presentation


  • 35 Views
  • Uploaded on
  • Presentation posted in: General

Do Now: Page 22.

Download Presentation

Do Now: Page 22

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Do now page 22

Do Now: Page 22


Do now page 22

Speaking of frogs - this is what a red eyed tree frog looks like with its eyes closed. They actually have three eyelids. The third is called the nictitating membrane, and it allows the frog to protect their eye from danger and to keep it moist while still allowing some visibility.This membrane is found in many different groups of animals, but most of them it simply looks like an opaque membrane. The tree frog's is a bit more striking!


Page 12

Page 12


Page 19

Page 19


Homework review

Homework Review


Homework review1

Homework Review


The reflex arc

The Reflex Arc

Page 8


The reflex arc1

The Reflex Arc


Reflex arc

Reflex Arc

1. A stimulus


Reflex arc1

Reflex Arc

2. The stimulus causes a sensory neuron to send a signal to the CNS


Reflex arc2

Reflex Arc

3. The sensory neuron stimulates an interneuron.


Reflex arc3

Reflex Arc

4. The interneuron stimulates a motor neuron.


Reflex arc4

Reflex Arc

5. The motor neuron sends a signal back to the muscle or organ “telling” it what to do.


What is happening here

What is happening here?


Do now page 22

The knee jerk reflex is called a monosynaptic reflex because there is only one synapse in the circuit needed to complete the reflex. It only takes about 50 milliseconds between the tap and the start of the leg kick. That is fast! The tap below the knee causes the thigh muscle to stretch. Information is then sent to the spinal cord. After one synapse in the ventral horn of the spinal cord, the information is sent back out to the thigh muscle that then contracts.


Go to page 15

Go To Page 15


Do now page 22

Do Now: Page 15


Do now page 22

  • Do Now: Page 15

  • Homework: Page 908, 1 and 2


  • Login