1. 8.3 INTRO: Objective: MYONEURAL JUNCTION
Unit 2: Support & Movement
8.3
Aim: How do muscles get a signal to contract or relax?
AGENDA
Introduction
Mini-Lesson
Summary
Work Period
Exit Slip
Do Now
Objective:
I will describe the signal transmission across the Myoneural Junction.
INTRO:
MYONEURAL JUNCTION

2. 8.2 Aim: How do muscles get a signal to contract or relax?
Unit 2: Support & Movement
8.2
Aim: How do muscles get a signal to contract or relax?
AGENDA
Introduction
Mini-Lesson
Summary
Work Period
Exit Slip
Real-world connection
Impulse Speed
Males Vs. Females
Vocabulary
motor neuron, synapse, neurotransmitter, motor end plate, neuromuscular junction, motor unit, acetylcholine, sliding filament model, troponin, tropomyosin, oxygen debt.
Do Now
Work Period
Exit Slip
Do Now
Introduction
Mini-Lesson
Summary

3. The Neuromuscular (myoneural) Junction

4. Neurons that control skeletal muscle are called MOTOR NEURONS.
Neurons that control skeletal muscle are called MOTOR NEURONS.
These motor neurons meet the muscle cells at a point called the SYNAPSE. There is NO physical contact – much like talking on the phone.
The muscle cell area is called the MOTOR END PLATE
When one motor neuron branches and connects to many muscle cells (fibers) it is called a MOTOR UNIT
A NEUROTRANSMITTER, in the case of muscles it is acetylcholine, is released at the synapse and stimulates an impulse causing the muscle to contract.
This SITE is call the NEUROMUSCULAR (MYONEURAL) JUNCTION

5. Objective: I WILL COMPARE THE SPEED OF IMPULSES FOR MALES AND FEMALES.
Unit 2: Support & Movement
8.3
Aim: How do muscles get a signal to contract or relax?
AGENDA
Introduction
Mini-Lesson
Summary
Work Period
Exit Slip
Do Now
Objective:
I WILL COMPARE THE SPEED OF IMPULSES FOR MALES AND FEMALES.
LAB:
SNAPS

6. SNAPS: Lab Activity MATERIALS: PROCEDURE ANALYSIS CLASS AVERAGES
Partner & Stopwatch
PROCEDURE
1. Practice snapping your fingers – make sure there is a CLEAR snap sound.
2. Have your partner set the time for 15 seconds.
3. See how many CLEAR snaps you can make in 15 seconds.
4. Record your information on your notes.
5. Complete the procedure with the other partner.
ANALYSIS
Record the information from other groups / tables so you have at least 8 samples.
Compare Male and Female results and record the information on your data table
CLASS AVERAGES
CONCLUSION – Complete in your notes

7. LAB: 8.3 Objective: SNAPS – Turn In
Unit 2: Support & Movement
8.3
Aim: What is the physiology of a muscle contraction?
AGENDA
Introduction
Mini-Lesson
Summary
Work Period
Exit Slip
Do Now
Objective:
I will list the steps in the sliding-filament action of muscular contraction.
LAB:
SNAPS – Turn In

8. 8.3 Vocabulary Aim: What is the physiology of a muscle contraction?
Unit 2: Support & Movement
8.3
Aim: What is the physiology of a muscle contraction?
AGENDA
Introduction
Mini-Lesson
Summary
Work Period
Exit Slip
Vocabulary
Sliding filament model, actin, myosin, troponin, tropomyosin, ATPase, acetylcholinesterase, creatine phosphate
Do Now
Work Period
Exit Slip
Do Now
Introduction
Mini-Lesson
Summary

9. Sliding Filament Model