bio 9a monday january 25 2010 title cell specialization part 2 n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Bio 9A: Monday, January 25, 2010 Title: Cell Specialization, Part 2 PowerPoint Presentation
Download Presentation
Bio 9A: Monday, January 25, 2010 Title: Cell Specialization, Part 2

Loading in 2 Seconds...

play fullscreen
1 / 22

Bio 9A: Monday, January 25, 2010 Title: Cell Specialization, Part 2 - PowerPoint PPT Presentation


  • 111 Views
  • Uploaded on

Bio 9A: Monday, January 25, 2010 Title: Cell Specialization, Part 2. Homework: Read Section 35-2 (pgs 897-900). and take notes using active reading strategies – see assignment sheet for details. Do Now: Look over your midterm exam In your notebook, write down: One thing you did well

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Bio 9A: Monday, January 25, 2010 Title: Cell Specialization, Part 2' - telma


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
bio 9a monday january 25 2010 title cell specialization part 2
Bio 9A: Monday, January 25, 2010Title: Cell Specialization, Part 2
  • Homework:
    • Read Section 35-2 (pgs 897-900). and take notes using active reading strategies – see assignment sheet for details.
  • Do Now:
    • Look over your midterm exam
    • In your notebook, write down:
      • One thing you did well
      • One thing you could have improved on
      • Any questions you have about the midterm
  • Today’s Objectives:
    • Review the Midterm Exam and answer MAJOR questions (individual issues need to be discussed after school)
    • Describe how different types of cells have different structures to fit their functions
today s agenda
Today’s Agenda
  • Review Midterm Exam results
    • Class and grade results
    • Major questions you have
  • Cell Specialization Investigation
    • Worksheet w/ a partner
    • Class discussion & brief notes
midterm exam results
Midterm Exam Results

Class Data Graphed

Number of 9A Students with each exam score

Grade on Midterm Exam

investigate cell specialization specialized cells have specialized structures
Investigate Cell SpecializationSpecialized Cells have Specialized Structures

“Typical” Cell

“Mystery” Cell

  • Objectives for Class:
    • Describe how different types of cells have different structures to fit their functions
    • Identify 3 specialized structures of neurons that allow them to receive and transmit signals throughout the body
the nervous system

The Nervous System

PHA Biology 9

Moretti and Dickson

neurons
Neurons
  • Neuron = a specialized nerve cell
    • Function: communicate with body organs by sending electrical signals (impulses)
    • Structure:
      • Long branches send and

receive signals

      • Cell body coordinates

incoming and outgoing signals

neurons structure and function
Neurons:Structure and Function
  • Dendrites:branched extensions, carry impulses toward cell body

Cell Body:

nucleus & organelles

  • Axon:Takes impulses away
  • from cell body
  • Objectives for Class:
    • Describe how different types of cells have different structures to fit their functions
    • Identify 3 specialized structures of neurons and explain that allow them to receive and transmit signals throughout the body
bio 9a tuesday january 26 2010 title the nervous system
Bio 9A: Tuesday, January 26, 2010Title: The Nervous System
  • Homework:
    • In notebook – 2 paragraphs summarizing class notes (see assignment sheet for details…)
      • How do the brain, spinal cord, sensory nerves, and motor nerves work together to sense and respond to a stimulus?
      • How does the structure of a neuron fit its function?
  • Do Now:
    • What is the difference between a dendrite and an axon?
    • How do they relate to the overall function of a neuron?
  • Today’s Objectives:
    • Identify the 2 major divisions of the Nervous System and their major components
    • Explain how neurons receive and send messages
this week
This week…
  • Today: Notes on the Nervous System
  • Thursday: Reaction Time Lab!
  • Friday: Wrap up this unit with a short open-notes quiz on the nervous and musculoskeletal systems.

Next week… Genetics!!

nervous system major divisions working together
Nervous System:Major Divisions Working Together
  • Objectives for Class:
    • Identify the 2 major divisions of the Nervous System and their major components
nervous system the 2 major divisions
Nervous System:The 2 Major Divisions
  • Central Nervous System = Brain and spinal cord
      • Brain: Processes information, controls responses
      • Spinal cord: Links brain to other nerves, controls reflex responses.
  • Peripheral Nervous System = All other nerves throughout the body
      • Motor nerves send info from brain to muscles
      • Sensory nerves send info from sense organs to brain
  • Objectives for Class:
    • Identify the 2 major divisions of the Nervous System and their major components

Image: Adam, Inc.; http://graphics8.nytimes.com/images/2007/08/01/health/adam/8679.jpg

nervous system major divisions working together1
Nervous System:Major Divisions Working Together
  • Objectives for Class:
    • Identify the 2 major divisions of the Nervous System and their major components
review neuron structure and function
Review:Neuron Structure and Function
  • Dendrites:branched extensions, carry impulses toward cell body

Cell Body:

nucleus & organelles

  • Axon:Takes impulses away
  • from cell body
  • Objectives for Class:
    • Describe how different types of cells have different structures to fit their functions
    • Identify 3 specialized structures of neurons and explain that allow them to receive and transmit signals throughout the body
neurons structure and function1
Neurons:Structure and Function

Axon

Cell Body

Dendrites

  • Objectives for Class:
    • Describe how different types of cells have different structures to fit their functions
    • Identify 3 specialized structures of neurons and explain that allow them to receive and transmit signals throughout the body
neurons structure and function2
Neurons:Structure and Function
  • Objectives for Class:
    • Describe how different types of cells have different structures to fit their functions
    • Identify 3 specialized structures of neurons and explain that allow them to receive and transmit signals throughout the body
nerve impulse a wave of electricity that travels through the neuron
Nerve Impulse:A “wave” of electricity that travels through the neuron

3 Steps of a Nerve Impulse:

  • Dendrites are stimulated by a stimulus (environment or other neuron).
  • Electric impulse travels to cell body.
  • Cell body sends an impulse down the axon to the axon terminals.

Stimulus!

(Sound, smell, sight, taste, another neuron’s signal)

  • Objectives for Class:
    • Identify 3 specialized structures of neurons and explain that allow them to receive and transmit signals throughout the body
the wave of a nerve impulse
The “wave” of a nerve impulse:
  • Objectives for Class:
    • Identify 3 specialized structures of neurons and explain that allow them to receive and transmit signals throughout the body
neurons communicate with other cells
Neurons communicate with other cells…
  • Other neurons
  • Muscle cells

Brain cell

Muscle cell

Motor neuron

Synapse:

The place where a neuron connects to another cell

Motor neuron

communication at the synapse
Communication At the Synapse:
  • Axon terminal releases neurotransmitter (a tiny signal molecule).
  • Neurotransmitter diffuses across synapse and signals the next cell.
  • This triggers an impulse in the next cell.
  • Objectives for Class:
    • Identify 3 specialized structures of neurons and explain that allow them to receive and transmit signals throughout the body
slide20

Objectives for Class:

    • Identify 3 specialized structures of neurons and explain that allow them to receive and transmit signals throughout the body
bio 9a thursday january 28 2010 title reaction time lab
Bio 9A: Thursday, January 28, 2010Title: Reaction Time Lab
  • Homework:
    • Prepare notes for the quiz tomorrow – you can use anything written on your lab packet (see back page).
  • Do Now:
    • What is the difference between a sensory neuron and an motor neuron?
    • How does a neuron signal a muscle cell?
  • Today’s Objectives:
    • Measure how fast your nervous & muscle systems can react to a falling meter stick
    • Explain how the nervous and musculoskeletal systems work together to make you move!
agenda
Agenda
  • Review Do Now.
  • Reaction Time Lab:
    • Intro & Review Procedure (as a class)
    • Pre-Lab Questions (with your partner)
    • Choose Roles and Do Part I
    • Switch Roles and Repeat Part I
    • Do Part II (make a data table, experiment, then switch roles)
    • Answer the Post-Lab Conclusions  These must be completed in class!
  • HW: Notes to prep for quiz tomorrow.

GOAL: Explain how the nervous, muscle, and skeletal systems work together to make you catch a falling meter stick.