Nervous System - Impulse Conduction

Do Now:
Draw 3 boxes on a blank piece of paper. In one box draw a axon in resting potential, in the second box draw an axon that is depolarizing and in the third box draw a picture of an axon that is repolarizing.

Today in class we:
- Discussed how the action potential in one part of an axon is then conducted throughout the length of the axon
- Discussed features of the synapse and how impulses are transfered from one axon to another
- Discussed the role of neurotransmitters in nerve impulses

Activity:
- Students got into small groups. Each group got a general reading on neurotransmitters and how they are affected by drugs.
- Each group also received a reading for a specific drug.

- Due Tuesday:
Read and answer reading reflection questions on both the role of neurotransmitters and the affects of your specific drug on nervous system functions
Be prepared with your group to present on your specific drug

Nervous System - Action Potential

Do Now:
Draw a neuron. Include and label the following parts: dendrites, cell body, axon, schwann cells. Is your neuron unipolar, bipolar, or multipolar?

Today in class we:
- Discussed how action potentials are produced in a neuron
- Included discussion of resting potential, polarized state, depolarization, repolarization, refractory period
- Reviewed concepts with animation (see sidebar)

Nervous System

Today in class we:
Reviewed muscle system test
Began discussion of Nervous System: function, cell types, components of nervous system

Homework due Tuesday:
- Read Sections 9.1 and 9.2, complete the Check your Recalls at the end of each section

Muscle System Test

Today in class we tested on the muscle system

Wednesday: Come prepared to assemble your lab posters and prepare for presentations

Friday: Lab group presentations

Muscle Fatigue Lab and Muscle System Review

Today in class we:
- Finished all data collection for muscle fatigue labs
- Reviewed the muscle system for test on Monday
- See Online Resources for additional review materials
- See Assignments for assigned review sheet - due Monday
- Study session Monday at lunch in Rm 411


Next week:
Monday: Muscle System Test
Wednesday: Muscle Fatigue group presentations

Muscle Stimulus and Action

Do Now:
Define a muscle twitch
Differentiate between slow and fast muscle twitch

Today in class we:
Reviewed ideas of twitch, summation, recruitment, and sustained contraction
Discussed how muscles act in groups in terms of insertion and origin and prime mover, synergists, and antagonist muscles

Homework:
-Muscle System Review due Monday at exam time - come prepared for review session on Thursday by identifying areas that you want to review
-Be prepared on Thursday to finish your data collection in class
- Muscle Fatigue Lab due in full on Wednesday 2/13, presentations

Muscle Fatigue Lab

Do Now:
Describe the difference between isometric and isotonic muscle contractions.

Today in class we:
discussed muscular responses: threshold stimulus, and summation (see power point on side bar)
conducted muscle fatigue labs in partner groups