Ch.6 Muscles-Eastham
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| Contractility | to shorten with force
🗑
|
||||
| Excitability | to respond to a stimulus
🗑
|
||||
| Extensibilty | to be stretched
🗑
|
||||
| Elasticity | to recoil to original length
🗑
|
||||
| Epimysium | surrounds the skeletal muscle
🗑
|
||||
| Fascia | connective tissue located outside the epimysium
🗑
|
||||
| Perimysium | surrounds the fascicle
🗑
|
||||
| Fibers | single muscle cells
🗑
|
||||
| Endomysium | surrounds the fiber
🗑
|
||||
| Myofibrils | a threadlike structure that extends from one end of the fiber to the other
🗑
|
||||
| Actin Myofilaments | thin; 2 strands of pearls twisted together
🗑
|
||||
| Myosin Myofilaments | thick; bundles of minute golf clubs
🗑
|
||||
| Sarcomeres | actin and myosin that form highly ordered units; the basic structural and functional unity of the muscle; Z-Line
🗑
|
||||
| I-Band | actin; white area
🗑
|
||||
| A-Band | myosin; dark shaded
🗑
|
||||
| H-Zone | myosin; contains m-line
🗑
|
||||
| M-Line | myosin; between a-bands in the h-zone
🗑
|
||||
| outside of cell membrane(resting) | positively charged
🗑
|
||||
| inside of cell membrane(resting) | negatively charged
🗑
|
||||
| Action Potential | reverse of charge in resting membrane potential
🗑
|
||||
| Motor Neurons | nerve cells that carry action potentials to skeletal muscle fibers
🗑
|
||||
| Neuromusclular Junction | each branch that connects to the muscle
🗑
|
||||
| Synapse | near center of the cell
🗑
|
||||
| Motor Unit | a single motor neuron and all the skeletal muscle fibers it innervates
🗑
|
||||
| Presynaptic Terminal | the enlarged nerve terminal
🗑
|
||||
| Synaptic Cleft | the space between the presynaptic terminal and the muscle cell
🗑
|
||||
| Postsynaptic Terminal | the muscle fiber
🗑
|
||||
| Acetylcholine | diffuses across the synaptic cleft and binds to the postsynaptic terminal Causing a change in the postsynaptic cell
🗑
|
||||
| Acetylcholinesterase | an enzyme that rapidly breaks down acetylcholine which is released into the synaptic cleft between the neuron and muscle cell
🗑
|
||||
| Sliding Filament Mechanism | the sliding of actin myofilaments slide past myosin myofilaments during contraction
🗑
|
||||
| Muscle Twitch | a contraction of an entire muscle in response to a stimulus that causes the action potential in one or more muscle fibers
🗑
|
||||
| Threshold | a muscle fiber will not respond to a stimulus until that stimulus reaches level called
🗑
|
||||
| Lag Phase | the time between application of a stimulus to a motor neuron and the beginning of a contraction
🗑
|
||||
| Contraction Phase | the time of a contraction
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
katieb13102
Popular Anatomy sets